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  Subjects -> ELECTRONICS (Total: 202 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advanced Materials Technologies     Hybrid Journal  
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 9)
Advances in Electronics     Open Access   (Followers: 99)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Power Electronics     Open Access   (Followers: 39)
Advancing Microelectronics     Hybrid Journal  
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 28)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 15)
Australian Journal of Electrical and Electronics Engineering     Hybrid Journal  
Batteries     Open Access   (Followers: 9)
Batteries & Supercaps     Hybrid Journal   (Followers: 4)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 31)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 2)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 9)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 304)
ECTI Transactions on Computer and Information Technology (ECTI-CIT)     Open Access  
ECTI Transactions on Electrical Engineering, Electronics, and Communications     Open Access   (Followers: 2)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 123)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 108)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 103)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage     Hybrid Journal   (Followers: 1)
Energy Storage Materials     Full-text available via subscription   (Followers: 4)
EPE Journal : European Power Electronics and Drives     Hybrid Journal  
EPJ Quantum Technology     Open Access   (Followers: 1)
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 100)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 81)
IEEE Embedded Systems Letters     Hybrid Journal   (Followers: 56)
IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology     Hybrid Journal   (Followers: 2)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 52)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Letters on Electromagnetic Compatibility Practice and Applications     Hybrid Journal   (Followers: 3)
IEEE Magnetics Letters     Hybrid Journal   (Followers: 7)
IEEE Nanotechnology Magazine     Hybrid Journal   (Followers: 42)
IEEE Open Journal of Circuits and Systems     Open Access   (Followers: 2)
IEEE Open Journal of Industry Applications     Open Access   (Followers: 2)
IEEE Open Journal of the Industrial Electronics Society     Open Access   (Followers: 2)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 77)
IEEE Pulse     Hybrid Journal   (Followers: 5)
IEEE Reviews in Biomedical Engineering     Hybrid Journal   (Followers: 22)
IEEE Solid-State Circuits Letters     Hybrid Journal   (Followers: 2)
IEEE Solid-State Circuits Magazine     Hybrid Journal   (Followers: 13)
IEEE Transactions on Aerospace and Electronic Systems     Hybrid Journal   (Followers: 363)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 74)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 59)
IEEE Transactions on Autonomous Mental Development     Hybrid Journal   (Followers: 8)
IEEE Transactions on Biomedical Engineering     Hybrid Journal   (Followers: 38)
IEEE Transactions on Broadcasting     Hybrid Journal   (Followers: 13)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 26)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 45)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Geoscience and Remote Sensing     Hybrid Journal   (Followers: 221)
IEEE Transactions on Haptics     Hybrid Journal   (Followers: 4)
IEEE Transactions on Industrial Electronics     Hybrid Journal   (Followers: 76)
IEEE Transactions on Industry Applications     Hybrid Journal   (Followers: 40)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Learning Technologies     Full-text available via subscription   (Followers: 12)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 79)
IEEE Transactions on Services Computing     Hybrid Journal   (Followers: 4)
IEEE Transactions on Signal and Information Processing over Networks     Hybrid Journal   (Followers: 14)
IEEE Transactions on Software Engineering     Hybrid Journal   (Followers: 79)
IEEE Women in Engineering Magazine     Hybrid Journal   (Followers: 11)
IEEE/OSA Journal of Optical Communications and Networking     Hybrid Journal   (Followers: 16)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Energy Systems Integration     Open Access   (Followers: 1)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 59)
IET Smart Grid     Open Access   (Followers: 1)
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Technology Research Journal Phranakhon Rajabhat University     Open Access  
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 12)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 5)
International Journal of Control     Hybrid Journal   (Followers: 11)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 3)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Hybrid Intelligence     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 16)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 10)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 25)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 4)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 12)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 37)
Journal of Electrical Bioimpedance     Open Access  
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 8)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 9)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronic Science and Technology     Open Access   (Followers: 1)
Journal of Electronics (China)     Hybrid Journal   (Followers: 5)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access   (Followers: 2)
Journal of Field Robotics     Hybrid Journal   (Followers: 3)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 182)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 10)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 10)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal   (Followers: 1)
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal   (Followers: 3)
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 11)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 31)
Journal of Power Electronics     Hybrid Journal   (Followers: 1)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer     Open Access  
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 6)
Microelectronics and Solid State Electronics     Open Access   (Followers: 28)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal   (Followers: 1)
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 9)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 2)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 4)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 11)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 6)
Revue Méditerranéenne des Télécommunications     Open Access  
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 56)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Solid State Electronics Letters     Open Access  
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 3)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Transactions on Electrical and Electronic Materials     Hybrid Journal   (Followers: 1)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 7)
Ural Radio Engineering Journal     Open Access   (Followers: 1)
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)

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Similar Journals
Journal Cover
IEEE Antennas and Wireless Propagation Letters
Journal Prestige (SJR): 1.047
Citation Impact (citeScore): 4
Number of Followers: 81  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1536-1225
Published by IEEE Homepage  [228 journals]
  • IEEE Antennas and Wireless Propagation Letters
    • Abstract: Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Efficient Computation of Green's Function for 1-D Periodic
           Structures
    • Authors: Yury A. Tuchkin;Ali Şanlı;Fatih Dikmen;
      Pages: 373 - 377
      Abstract: In this letter, the computation of the Green's function for one-dimensional (1-D) periodic structures is presented via a fast and accurate algorithm based on the philosophy of Kummer's decomposition (KD). The KD uses an optimal value for a quasi-periodicity parameter. An approximate optimal balance between direct summation and acceleration is constructed when necessary. The algorithm has been designed for easy extraction and analytical analysis of the irregular structure of the Green's function including logarithmic singularity. The shown numerical results for low- and quite high-frequency values demonstrate the high efficiency and accuracy of the algorithm in comparison with other known approaches. In particular, numerical comparisons to Ewald's and other methods are discussed.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • One-Sixteenth Spherical Homogeneous Dielectric Lens Antenna on Metal
           Corner Reflector for High-Gain Radiation With Size Reduction
    • Authors: Kittisak Phaebua;Titipong Lertwiriyaprapa;Chuwong Phongcharoenpanich;Yi-Sheng Chang;Danai Torrungrueng;Hsi-Tseng Chou;
      Pages: 378 - 382
      Abstract: In this letter, a three-dimensionally printed one-sixteenth fractional spherical homogeneous dielectric lens antenna on a metallic corner reflector is designed. This lens antenna is fed by an open-ended rectangular waveguide for high-gain radiation. The main design concept is to produce an equivalent spherical dielectric lens that is excited by multiple virtual sources arising from the multiple images of the original feed by the corner reflector's walls. Thus, the antenna can retain a compact size with a sufficiently effective aperture to produce a higher radiation gain. In particular, a ray-tracing method of geometrical optics is introduced for easily determining the proper sizes of the corner reflector's walls, which leads the proposed work to be more efficient than using a full-wave simulation. The superiority of the antenna is validated by examining a practical design for a radar system at 9 GHz band. It is found that the optimum dielectric constant (ϵr), ground plane size, and effective aperture area, relatively speaking, depend on the radius of the lens's sphere. This proposed antenna well suits multifeed satellite communication antennas, radar, and other high-gain antennas applications.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Low-Profile Wideband Dual-Polarized Antenna Based on an Improved HIS and
           Its Broad-Angle Beam-Scanning Array
    • Authors: Haobo Wu;Junping Geng;Kun Wang;Han Zhou;Xiaonan Zhao;Chong He;Xianling Liang;Weiren Zhu;Ronghong Jin;
      Pages: 383 - 387
      Abstract: A low-profile wideband dual-polarized antenna with an improved high-impedance surface (HIS) reflector is proposed. Dual-polarized radiation is excited by feeding a set of crossed dipoles. Low profile is achieved by utilizing an improved HIS reflector. Good impedance characteristics are realized by inserting small square cells among the primary hexagonal cells of the HIS. Two shorting pins and four parasites are introduced to increase port-to-port isolation and improve impedance matching, respectively. A prototype with profile 7.5 mm (about 0.06$lambda$ and $lambda$ equals to the wavelength at center frequency) was fabricated and measured. The experiment results show that the antenna element achieves 43$%$ bandwidth ($vert { S_{11}}vert$$< $ $-$10 dB) from 2.0 to 3.1 GHz. The polarization isolation between those two ports is larger than 25 dB. The element was then extended to an eight-element phased array. The measured results demonstrate that the array can scan $;pmtext{50}^{circ }$ for either polarization from 2.0 to 2.6 GHz.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Circularly Polarized SIW Slot Antenna Based on High-Order Dual-Mode
           Cavity
    • Authors: Tian Liang;Zhan Wang;Yuandan Dong;
      Pages: 388 - 392
      Abstract: In this letter, a novel circularly polarized (CP) slotted substrate integrated waveguide (SIW) cavity antenna using a hybrid TE202 mode (HTM) and the eigen TE202 mode (ETM) is proposed and studied. The antenna is designed for Ku-band satellite wireless link applications. It utilizes two different and orthogonal TE202 modes (ETM and HTM) with slots etched on the surface to form left-hand CP radiation. It is directly fed by a coaxial probe with a low profile. The working mechanism and the design approach are elaborated. The current distribution for the two TE202 high-order modes is analyzed. Shorting pins and slots are applied to generate the required CP radiation. To verify the feasibility, the antenna is simulated and fabricated using the conventional printed circuit board (PCB) process. It has a measured –10 dB impedance bandwidth of 4.2% and a 3 dB axial ratio (AR) bandwidth of 1.6%. The peak gain is over 7 dBic in the operation band. The antenna has a size of 0.92λ0 × 0.90λ0, where λ0 is the free-space wavelength at 12.24 GHz. Good agreement between the simulation and measurement results is observed.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Three Wideband Monopolar Patch Antennas in a Y-Shape Structure for 5G
           Multi-Input–Multi-Output Access Points
    • Authors: Kin-Lu Wong;Hsuan-Jui Chang;Jian-Zhong Chen;Kuan-Ying Wang;
      Pages: 393 - 397
      Abstract: Three wideband monopolar patch antennas (MPAs) integrated into a Y-shape structure for multi-input–multi-output (MIMO) operation in 3300–4200 MHz for fifth-generation (5G) access points are presented in this letter. Each MPA has an antenna height of 10 mm (about 0.11λ at 3300 MHz) and a top-patch length of 22 mm (about 0.24λ at 3300 MHz). Each MPA is capacitively excited through a feed strip at its corresponding top-patch center and is short circuited to the ground plane through two shorting strips. One shorting strip is at the top patch's open end and the other one is at the center of the Y-shape structure, which is the central shorting strip shared by all three MPAs. The three compactly integrated MPAs generate three decoupled waves with monopolelike radiation patterns. Good antenna performance of the three MPAs is also obtained.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Portable Very Low Frequency (VLF) Communication System Based on
           Acoustically Actuated Magnetoelectric Antennas
    • Authors: Cunzheng Dong;Yifan He;Menghui Li;Cheng Tu;Zhaoqiang Chu;Xianfeng Liang;Huaihao Chen;Yuyi Wei;Mohsen Zaeimbashi;Xinjun Wang;Hwaider Lin;Yuan Gao;Nian X. Sun;
      Pages: 398 - 402
      Abstract: A novel very low frequency (VLF) communication system using one pair of magnetoelectric (ME) antennas has been proposed. The ME antennas are strain-mediated acoustic resonators operating at their electromechanical resonance in the VLF band. The measured near-field radiation pattern reveals ME antennas are equivalent to dipole antennas. The magnetic field radiated by the ME transmitter has been predicted along with distance ranging from 1 mm to 100 km. The measured magnetic field distribution coincided well with the prediction, and the maximum communication distance of 120 m has been achieved. With 80 V driving voltage, the power consumption of the ME transmitter has been measured as 400 mW. Furthermore, the direct antenna modulation (DAM) has also been successfully demonstrated on the ME antennas.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Quad-Band Quad-Sense Circularly Polarized Dielectric Resonator Antenna for
           GPS/CNSS/WLAN/WiMAX Applications
    • Authors: Anand Sharma;Gourab Das;Surbhi Gupta;Ravi Kumar Gangwar;
      Pages: 403 - 407
      Abstract: This letter presents the design and study of a novel aperture coupled cylindrical dielectric resonator antenna (cDRA). Unique aspects of the proposed antenna design are that proposed aperture can excite six different hybrid radiating modes (HEM11δ, HEM11δ+1, HEM12δ-like, HEM12δ, HEM13δ, HEM14δ) in the cDRA; first time, quad-band quad-sense circular polarization is obtained in the dielectric resonator antenna structure; and radiation characteristics (broadsided) are almost same in all the frequency bands. These features make the proposed antenna structure relevant for L1/L2 GPS bands (1.2/1.5 GHz), CNSS, wireless LAN (2.4 GHz) as well as WiMAX (2.5 GHz) applications.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Linear Array of Skewed Dipoles With Asymmetric Radiation Pattern for
           Angular Filtering
    • Authors: Cristina Yepes;Erio Gandini;Stefania Monni;Andrea Neto;Frank E. van Vliet;Daniele Cavallo;
      Pages: 408 - 412
      Abstract: In this letter, we present a design of a linear array of tilted dipoles to achieve radiation patterns with asymmetric angular filtering characteristics. To realize the asymmetric radiation, the dipole elements are spaced by a distance larger than half a wavelength, thus allowing for grating lobes to occur in the visible region. Moreover, the dipoles are loaded with artificial dielectrics to increase the front-to-back ratio and consequently to enable higher gain in certain desired angular regions. Based on the design, a linear array with ten elements is manufactured and tested. The measured results show the ability of such an array to achieve stable gain from broadside up to 90° scanning while implementing a stopband angular filter for negative scanning angles.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Efficient Technique for the Analysis of Electromagnetic Problems Involving
           Antenna Trajectories in Complex Scenarios
    • Authors: Carlos Delgado;Eliseo García;Lorena Lozano;Manuel Felipe Cátedra;
      Pages: 413 - 417
      Abstract: This letter presents an efficient approach for the electromagnetic analysis of complex scenarios involving transmitting antennas moving along predetermined trajectories. In order to efficiently reduce the size of the problem for each position of the antenna, we propose a technique based on macro basis functions that are dynamically generated using a ray-tracing analysis. The multilevel fast multipole algorithm is also included in order to reduce the memory consumption and speed up the solution process. Some representative test cases serve to validate the efficiency and performance of the proposed approach.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Reduction of Beam Squinting and Cross-Polarized Fields in a Wideband CP
           Element
    • Authors: B. Pavan Kumar;Debatosh Guha;Chandrakanta Kumar;
      Pages: 418 - 422
      Abstract: Achieving wide circularly polarized (CP) bandwidth in a simple probe-fed microstrip antenna is essential for many practical applications. Existing knowledge guides exploring a thick substrate-based patch design. However, it suffers from two major inherent issues: squinting of beam and high cross-polarized (XP) radiation. No solution is available so far. This letter successfully addresses both issues by imposing restriction on the fringing characteristics as well as modal fields of a suspended substrate circular patch. Engineered ground plane bearing different strategic defects has been explored leading to about 50% correction in beam squinting with reference to antenna boresight and 2–8 dB reduction in a peak XP level. Realistic design, physical insight, and the experimental validation ensure its huge potential for practical applications.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Decoupling and Sequential Array Antennas—Effects of Coplanar Feedline on
           Radiation Characteristics
    • Authors: Kazuhide Hirose;Yuto Kikkawa;Hisamatsu Nakano;
      Pages: 423 - 427
      Abstract: Using the method of moments, we investigate two types of circularly polarized loop array antennas with and without a coplanar feedline (CF). The loops and the CF are located above a ground plane at a height of a quarter-wavelength. First, we analyze decoupling two-element array antennas. It is found that the antennas with and without the CF show reduced cross-polarization levels of −15 and −16 dB, respectively, when compared with that (−8 dB) of a conventional two-element array antenna without a CF. Next, we analyze sequential two-element array antennas. It is revealed that the antennas with and without a CF have bandwidths of 23% for a 3 dB axial-ratio criterion and 49% for a 3 dB gain-drop criterion, respectively. The analysis results are validated by an experimental work.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Synthesis of Sparse Linear Arrays With Reduced Excitation Control Numbers
           Using a Hybrid Cuckoo Search Algorithm With Convex Programming
    • Authors: Rui-Qi Wang;Yong-Chang Jiao;
      Pages: 428 - 432
      Abstract: Sparse linear arrays based on a novel subarrayed scheme are proposed and synthesized in this letter. The array with a fixed aperture size is partitioned into several uniformly spaced subarrays while number, spacing, and excitation in each subarray are optimized with multiple constraints. Compared with conventional sparse linear array with all the elements excited independently, the sparse linear array with the novel subarrayed scheme provides excitations at the subarray port and reduces the excitation control numbers remarkably. By integrating the cuckoo search (CS) algorithm with convex programming (CP), a hybrid CS–CP method is proposed and applied to the synthesis problem while the constraints are satisfied during the optimization process. Three examples with series of cases are presented, and the obtained results are compared to those presented in some state-of-the-art references. The optimized array achieves an improved peak sidelobe level and reduced excitation control number.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Multiuser Correlation and Sum-Rate in Outdoor Measured Massive MIMO
           Channels
    • Authors: Anders Karstensen;Jesper Ø. Nielsen;Patrick C. F. Eggers;Elisabeth De Carvalho;Gert F. Pedersen;Martin Alm;Gerhard Steinböck;
      Pages: 433 - 437
      Abstract: This letter analyzes the impact of interuser distance and angular separation on the channel correlation and achievable sum-rate for a massive multiple-input–multiple-output (MIMO) system in non-line-of-sight (NLOS) conditions. The investigation is based on outdoor measurements on a channel sounding system capturing the dynamic channel of two user arrays. The letter analyzes correlation and sum-rate with varying interuser distance and angular separation of dominant beams toward the users. A large span of correlation and sum-rate values are found across the range of distances and angular separation. The investigation shows a moderate link between interuser distance and correlation, but a strong impact on correlation is found only for low angular separation of the users. The results of this NLOS scenario suggest that a distance-based criteria alone is not sufficient to accurately model shared clusters and their correlation.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • 60 GHz Waveguide-Fed Cavity Array Antenna by Multistepped Slot Aperture
    • Authors: Saeideh Shad;Hani Mehrpouyan;
      Pages: 438 - 442
      Abstract: This letter presents a center-feed high-gain and high-efficiency 4 × 4-element slot array antenna in the 60 GHz band. The antenna feed network is designed using only a single-layered square quad-ridge cavity structure, which is excited through a rectangular slot that has the same size as that of a standard WR-15 rectangular waveguide. The proposed antenna avoids any conventional power dividers in the feed network, which reduces the complexity of the design and fabrication process. To enhance the operating bandwidth of the antenna and prevent the grating lobes effects, a stepped design is used for each radiating slots of the array. Furthermore, the overall radiating aperture of the antenna is equipped with a dielectric layer, which decreases the mutual coupling among array elements. As a result, a broad bandwidth antenna with high efficiency and low sidelobes in both E- and H-planes is developed over the 60 GHz band. The antenna has been fabricated and tested. Measurement results show an operating bandwidth of 11.6% from 57.7 to 64.7 GHz. A gain of more than 23 dBi, sidelobes of less than −15.2 dB, and an antenna efficiency of better than 60% are achieved.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Reconfigurable Dual-/Triple-Band Circularly Polarized Dielectric Resonator
           Antenna
    • Authors: Amir Altaf;Jin-Woo Jung;Youngoo Yang;Kang-Yoon Lee;Keum Cheol Hwang;
      Pages: 443 - 447
      Abstract: In this letter, a probe-fed reconfigurable dual-/triple-band circularly polarized (CP) Spidron fractal dielectric resonator antenna (SFDRA) is proposed. Initially, a dual-band CP SFDRA is designed. An eigen-mode simulation of an isolated SFDR concludes that the $mathbf{quasi-TM}_{11delta}$ and $mathbf{quasi-TM}_{21delta}$ are excited in the lower band, while the $mathbf{quasi-TE}_{12delta$ mode is excited in the upper CP band. The modes of the lower CP band are separated by etching a T-shaped slot (TSS) from the ground plane, thereby achieving overall triple-band circular polarization. In addition, the TSS being $lambda_{g}/2$ in length at 2.64 GHz produces a band-notch function. CP band reconfigurability is attained by placing a diode D1 across the width of the TSS such that the on-/off-state of the D1 radiates dual-/triple-band CP waves. The measurement results in the on-[off]-state show the impedance bandwidths for $ S_{11}
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Low-Profile Compact Dual-Band L-Shape Monopole Antenna for Microwave
           Thorax Monitoring
    • Authors: Haolin Zhang;Maokun Li;Fan Yang;Shenheng Xu;Hongyu Zhou;Yubo Yang;Lana Chen;
      Pages: 448 - 452
      Abstract: A low-profile compact dual-band L-shape monopole antenna is designed for microwave thorax imaging. The antenna operates at 433 and 915 MHz in Industrial, Scientific, and Medical band with a compact size of 30 mm × 20 mm × 1.5 mm, which is suitable for wearable devices. It radiates toward in-body direction. The monopole is bent to L-shape for miniaturization. A meandering shorted branch and an open branch are adopted to tune suitable resonance frequencies. The antenna is fabricated. Experiments are conducted with a phantom mimicking human model to verify the design. It is also tested with a human subject. With one antenna as transmitter and the other as receiver, the changes of S21 signals during respiration process verify the feasibility of respiration monitoring with this antenna. The antenna may be used in a microwave thorax imaging system in future research.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • 3-D Printed Wideband Millimeter-Wave Horn Antenna With Conical Radiation
           Pattern
    • Authors: Li Wu;Cong Wang;Shusheng Peng;Yongxin Guo;
      Pages: 453 - 456
      Abstract: A wideband millimeter-wave (mmW) circular aperture horn antenna with a conical radiation pattern realized by the metallic three-dimensional (3-D) printing technology is presented in this letter. The proposed structure consists of a coaxial waveguide and a quadruple-ridged conical horn. The horn antenna is fabricated using a direct metal laser sintering (DMLS) technology, and both manual polishing and yellow-gold coating are employed to realize a surface roughness of Ra = 1.6161 μm. The overall size of the fabricated antenna is 20 mm × 20 mm × 15.8 mm. Experimental measurements show that a wide relative impedance bandwidth of 60.7% and a peak gain of 11.4 dBi can be achieved within the frequency band of 24.9–46.6 GHz.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Optical Transparent Antenna Array Integrated With Solar Cell
    • Authors: Baoliang Xi;Xianling Liang;Qian Chen;Kun Wang;Junping Geng;Ronghong Jin;
      Pages: 457 - 461
      Abstract: This letter presents an optical transparent antenna array integrated with solar cell. Metal-meshed structure is used in the transparent antenna array, which achieves a balance between radiation efficiency and optical transparency. The meshed patches have equidistant distribution in the array and are fed by coaxial probes. A meshed ground, which has the same grid size as the meshed patch, is introduced and aligned with the patch. Cheap coating technology is utilized in printing silver-meshed patch and ground on the two surfaces of a glass substrate. A commercial monocrystalline silicon solar cell is closely assembled under the transparent antenna array. The proposed antenna array operates from 8.51 to 9.10 GHz (VSWR $leq 2$) with low cross-polarization levels, and obtains an 88% optical transparency. The transparent antenna array achieves a good radiation performance with little effect on solar photovoltaic generation.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Wide-Beam Dielectric Resonator Antenna With Attached Higher-Permittivity
           Dielectric Slabs
    • Authors: Shi-Jie Sun;Yong-Chang Jiao;Zibin Weng;
      Pages: 462 - 466
      Abstract: A novel wide-beamwidth rectangular dielectric resonator antenna (DRA) is proposed. By loading two pairs of higher-permittivity dielectric slabs symmetrically on two opposite surfaces of the rectangular DRA in one direction parallel to the feeding slot, the E-plane radiations from two opposite surfaces of the DRA are restrained. Dimensions and the relative permittivity of the dielectric slabs are adjusted, and the E-plane beamwidths of the DRA are expanded. Moreover, two sides of the metal ground plane in another direction perpendicular to the feeding slot are folded down, and the H-plane beamwidths are broadened. In order to verify the design feasibility and explain the operating principle, a wide-beamwidth rectangular DRA with $text{TE}_{113}^y$ mode is designed and manufactured. Measured results indicate that its maximum half power beamwidths in E-plane and H-plane are 210° and 137°, respectively, while its gains are over 2.2 dBi throughout the usable bandwidth from 3.02 to 3.26 GHz (7.6%).
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • High-Isolated MIMO Antenna Design Based on Pattern Diversity for 5G Mobile
           Terminals
    • Authors: Zhan Xu;Changjiang Deng;
      Pages: 467 - 471
      Abstract: In this letter, a novel multiple-input–multiple-output (MIMO) antenna operating at 3500 MHz band is presented for 5G mobile terminals. The proposed antenna includes four blocks. Each block consists of two face-to-face elements with total size of 25 × 3.5 mm2. Rather than excited separately, the two elements are excited simultaneously. Pattern diversity is achieved by using in-phase and out-of-phase signals. A compact two-port feed network is designed to provide the required feed signals. The measured bandwidth for the two ports is 750 MHz (3.06–3.81 GHz) and 340 MHz (3.33–3.67 GHz), which is sufficient to cover the 3400–3600 MHz band. The port isolation is higher than 14 dB in the overlapping bandwidth.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Differential Frequency-Reconfigurable Antenna Based on Dipoles for Sub-6
           GHz 5G and WLAN Applications
    • Authors: Guiping Jin;Chuhong Deng;Yechun Xu;Ju Yang;Shaowei Liao;
      Pages: 472 - 476
      Abstract: A new differential frequency-reconfigurable antenna based on dipoles is presented in this letter. The basic structure of the proposed antenna consists of two pairs of vertical arms forming two dipoles, the feeding structure, mode switching structure, and p-i-n diodes. By switching “on” and “off” p-i-n diodes, the antenna can resonate at two states, and thus work centered at 3.5 and 5.5 GHz, respectively. Though the two states correspond to different resonant modes, the effective radiation parts are the same and the mode switching structure will not contribute to the far field for both states. This results in similar radiation patterns for both states. Besides, the proposed antenna is also simple in structure and wide in bandwidth. The measured −10 dB impedance bandwidths are 2.89–4.07 GHz (33%) and 5.1–6.19 GHz (19.8%) for the two states, respectively.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Compact Antenna for Picosatellites Using a Meandered Folded-Shorted Patch
           Array
    • Authors: Yuepei Li;Symon K. Podilchak;Dimitris E. Anagnostou;Constantin Constantinides;Tom Walkinshaw;
      Pages: 477 - 481
      Abstract: The design and operation of a compact antenna array offering circularly polarized (CP) radiation for picosat and other small satellites for communication applications is presented. The proposed array combines the folded-shorted patches (FSPs) and meandering for antenna miniaturization. Realization of CP is achieved by a compact and planar feed circuit consisting of a network of meander-shaped 90° and 180° hybrid couplers, which can provide quadrature feeding of the FSP elements and can be integrated onto the backside of the antenna ground plane, which is only 5 × 5 cm2. Agreement in terms of the simulations and measurements is observed with realized gain values of more than 3 dBic at 1.065 GHz and with an antenna size of 0.17λ0 × 0.17λ0.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Systematic Methodology for the Time-Domain Ringing Reduction in UWB
           Band-Notched Antennas
    • Authors: MuhibUr Rahman;Amir Haider;Mahdi Naghshvarianjahromi;
      Pages: 482 - 486
      Abstract: Various ultrawideband (UWB) band-notched antennas are developed to avoid interference between UWB and other nearby narrow frequency bands that falls within the UWB spectrum. However, all band-notched UWB antennas developed generate ringing in the time domain, and a great amount of distortion is present in transmitted (or received) UWB pulses. The distortion level is dependent on band-notching strength and bandwidth, and it highly degrades the performance of the UWB system that is based on short pulses. This letter investigates time-domain ringing effect in UWB band-notched antennas and proposes a solution for its reduction. The proposed technique is verified through simulation and validated using measurements. The proposed technique will have key importance in impulse UWB radars.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Efficient Design of Radial Line Slot Antennas Using Currents Synthesis and
           Optimization
    • Authors: Manuel Jose Lopez-Morales;Fernando Rodriguez Varela;Daniel Vagace Vazquez;Manuel Sierra Castaner;
      Pages: 487 - 491
      Abstract: This letter aims to develop an innovative, fast, and effective technique to design radial line slot antennas (RLSAs) capable of obtaining nonconventional radiation properties by means of combining analytic approaches with optimization techniques. This technique allows to obtain much more complicated designs than the classical ones, including maximum directivity/gain and sidelobe level (SLL) control as examples of classical designs, in a quite faster way, but has a disadvantage that a proper error function for the optimization procedure which captures all the design requirements must be found. To verify the validity of this design technique, we compare it with other design techniques, and we have particularized it to the design of antennas with highest gain.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Polarization-Insensitive Rectenna Arrays With Different Power Combining
           Strategies
    • Authors: Hucheng Sun;Haiyang He;Jie Huang;
      Pages: 492 - 496
      Abstract: This letter presents two 2 × 2 polarization-insensitive dual-polarized rectenna arrays with different power combining strategies for wireless power transmission applications. With a dual-polarized antenna array, the incident wave can be received and decomposed into the horizontally and vertically polarized components, which are equally redistributed by a hybrid coupler. By this means, the efficiency of the rectenna, in which the power is equally input to the two rectifiers in parallel, is independent of the incident wave's polarization. Based on the equal power routing mechanism, two rectenna arrays using the RF and dc combining strategies are designed and analyzed. Measurement results show that both rectenna arrays are insensitive to the incident wave's polarization, and have their own advantages and disadvantages.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • A Method for Determining Vector Reflection Coefficient Based on Scalar
           Amplitude
    • Authors: Yunpeng Zhang;Yang Zhou;Tianqi Feng;Yong Gao;En Li;Juan Zhou;
      Pages: 497 - 501
      Abstract: Short-circuited reflection method is usually used to characterize the dielectric property of materials. When using the method, the extraction of the vector reflection coefficient (VRC) of the metal-backed sample is the key to determine the complex permittivity of the sample. Traditionally, the VRC is measured by a vector network analyzer associated with the transmission line or the antenna. In this letter, a method for determining the VRC using a scalar network analyzer is presented, which requires only one perturbation-two-port network composed of a standard sample layer. Based on the amplitude of the VRC, the phase of the VRC can be determined by the proposed rigorous analytical algorithm. The proposed method has been confirmed theoretically and experimentally, and the applicability of the method is analyzed.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Differential-Fed Dual-Polarized Dielectric Patch Antenna With Gain
           Enhancement Based on Higher Order Modes
    • Authors: Xue-Ying Wang;Shi-Chang Tang;Ling-Ling Yang;Jian-Xin Chen;
      Pages: 502 - 506
      Abstract: A differential-fed gain-enhanced dual-polarized dielectric patch antenna operating at higher order TM121 and TM321 modes is investigated in this letter. The introduction of grounded bars in a conventional square dielectric patch resonator (DPR) is a key technique in the proposed design. It not only moves the higher order TM121 mode upwards to enhance the gain of the antenna, but also enables the higher order TM321 mode to be excited and combined with TM121 mode to expand the bandwidth. Their corresponding degenerate modes in the DPR are used to generate a dual-polarized operation. By using two identical pairs of differential feeding lines to excite the proposed DPR, several advantages such as high isolation and low cross polarization can be obtained. For demonstration, an antenna prototype centered at about 4.9 GHz is implemented and measured. The simulated and measured results are given, showing a good agreement.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Long-Range Through-the-Wall Magnetoquasistatic Coupling and Application to
           Indoor Position Sensing
    • Authors: Darmindra D. Arumugam;Peter Littlewood;Nicholas Peng;Divyam Mishra;
      Pages: 507 - 511
      Abstract: The magnetoquasistatic (MQS) field coupling theory is presented for long ranges between a transmitting device located outdoor to a receiving device located indoor. The theory is validated based on measurements in a large indoor house environment ($>$8000 ft$^2$) with the transmitting device located far outside the house ($>$11 m from outer wall). We discuss the system and demonstrate position sensing for a compact mobile MQS receiver device in the house.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Comments on “An Ultrawideband Ultrathin Metamaterial Absorber Based on
           Circular Split Rings”
    • Authors: Fahad Ahmed;Tayyab Hassan;Nosherwan Shoaib;
      Pages: 512 - 514
      Abstract: This letter provides correction comments to an article published in 2015, by Ghosh et al. in which the authors have proposed a circular-split-rings-based ultrawideband ultrathin metamaterial absorber and claimed 90% absorption between 7.85 to 12.25 GHz. It is found that the authors have misinterpreted a cross polarizer as a broadband absorber by neglecting its cross-polarized reflection. It is found that by incorporating the cross-polarized coefficient of the reflected wave, the absorption of the proposed structure gets below 20% over the complete claimed operating band. Additionally, the polarization conversion ratio is above 90%, which proves that the proposed structure is predominantly a cross polarizer rather than an efficient absorber.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
  • Corrections to “Q-Factor and Bandwidth of Periodic Antenna Arrays Over
           Ground Plane”
    • Authors: Andrei Ludvig-Osipov;B. L. G. Jonsson;
      Pages: 515 - 515
      Abstract: Presents corrections to equations in the above named paper.
      PubDate: March 2020
      Issue No: Vol. 19, No. 3 (2020)
       
 
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