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Publisher: Cambridge University Press   (Total: 387 journals)

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Showing 1 - 200 of 387 Journals sorted alphabetically
Acta Neuropsychiatrica     Hybrid Journal   (Followers: 6, SJR: 0.733, CiteScore: 2)
Acta Numerica     Hybrid Journal   (Followers: 5, SJR: 6.709, CiteScore: 10)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 14)
Advances in Applied Mathematics and Mechanics     Full-text available via subscription   (Followers: 2, SJR: 0.441, CiteScore: 1)
Aeronautical J., The     Hybrid Journal   (Followers: 7)
Africa     Hybrid Journal   (Followers: 20, SJR: 0.582, CiteScore: 1)
African Studies Review     Full-text available via subscription   (Followers: 20, SJR: 0.437, CiteScore: 1)
Ageing & Society     Hybrid Journal   (Followers: 44, SJR: 0.756, CiteScore: 2)
Agricultural and Resource Economics Review     Open Access   (Followers: 6, SJR: 0.414, CiteScore: 1)
AI EDAM     Hybrid Journal   (Followers: 2, SJR: 0.375, CiteScore: 1)
AJIL Unbound     Open Access  
AJS Review     Full-text available via subscription   (Followers: 4, SJR: 0.128, CiteScore: 0)
American Political Science Review     Hybrid Journal   (Followers: 319, SJR: 5.587, CiteScore: 4)
Anatolian Studies     Full-text available via subscription   (Followers: 5, SJR: 0.528, CiteScore: 1)
Ancient Mesoamerica     Hybrid Journal   (Followers: 12, SJR: 0.478, CiteScore: 1)
Anglo-Saxon England     Hybrid Journal   (Followers: 36, SJR: 0.1, CiteScore: 0)
animal     Hybrid Journal   (Followers: 4, SJR: 0.842, CiteScore: 2)
Animal Health Research Reviews     Hybrid Journal   (Followers: 3, SJR: 0.69, CiteScore: 2)
Animal Science     Full-text available via subscription   (Followers: 11)
Annals of Actuarial Science     Full-text available via subscription   (Followers: 1)
Annual of the British School at Athens     Full-text available via subscription   (Followers: 17, SJR: 0.177, CiteScore: 0)
Annual Review of Applied Linguistics     Hybrid Journal   (Followers: 43, SJR: 3.223, CiteScore: 4)
Antarctic Science     Hybrid Journal   (Followers: 1, SJR: 0.643, CiteScore: 1)
Antichthon     Full-text available via subscription   (Followers: 3, SJR: 0.101, CiteScore: 0)
Antiquaries J., The     Full-text available via subscription   (Followers: 12, SJR: 0.106, CiteScore: 0)
Antiquity     Hybrid Journal   (Followers: 33)
ANZIAM J.     Open Access   (Followers: 1, SJR: 0.216, CiteScore: 0)
Applied Psycholinguistics     Hybrid Journal   (Followers: 25, SJR: 0.945, CiteScore: 2)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9, SJR: 0.404, CiteScore: 2)
Arabic Sciences and Philosophy     Hybrid Journal   (Followers: 9, SJR: 0.101, CiteScore: 0)
Arbor Clinical Nutrition Updates     Full-text available via subscription   (Followers: 5)
Archaeological Dialogues     Hybrid Journal   (Followers: 38, SJR: 0.898, CiteScore: 1)
Archaeological Reports     Full-text available via subscription   (Followers: 5, SJR: 0.128, CiteScore: 0)
Architectural History     Full-text available via subscription  
arq: Architectural Research Quarterly     Hybrid Journal   (Followers: 7, SJR: 0.123, CiteScore: 0)
Art Libraries J.     Full-text available via subscription  
Asian J. of Comparative Law     Hybrid Journal   (Followers: 11, SJR: 0.129, CiteScore: 0)
Asian J. of Intl. Law     Hybrid Journal   (Followers: 18, SJR: 0.135, CiteScore: 0)
Asian J. of Law and Society     Hybrid Journal   (Followers: 7, SJR: 0.195, CiteScore: 0)
Astin Bulletin     Full-text available via subscription   (Followers: 1, SJR: 0.878, CiteScore: 1)
Australasian J. of Organisational Psychology     Hybrid Journal   (Followers: 9, SJR: 0.154, CiteScore: 1)
Australian J. of Environmental Education     Full-text available via subscription   (Followers: 9, SJR: 0.403, CiteScore: 1)
Australian J. of Indigenous Education, The     Full-text available via subscription   (Followers: 10, SJR: 0.26, CiteScore: 1)
Australian J. of Rehabilitation Counseling     Full-text available via subscription   (Followers: 6, SJR: 0.144, CiteScore: 0)
Austrian History Yearbook     Full-text available via subscription   (Followers: 11, SJR: 0.161, CiteScore: 0)
Behavioral and Brain Sciences     Hybrid Journal   (Followers: 39, SJR: 0.595, CiteScore: 1)
Behaviour Change     Full-text available via subscription   (Followers: 13, SJR: 0.508, CiteScore: 1)
Behavioural and Cognitive Psychotherapy     Hybrid Journal   (Followers: 180, SJR: 0.976, CiteScore: 2)
Bilingualism: Language and Cognition     Hybrid Journal   (Followers: 42, SJR: 1.446, CiteScore: 2)
Biofilms     Full-text available via subscription   (Followers: 1)
Bird Conservation Intl.     Hybrid Journal   (Followers: 25, SJR: 0.581, CiteScore: 1)
BJPsych Advances     Full-text available via subscription   (Followers: 57, SJR: 0.275, CiteScore: 0)
BJPsych Intl.     Open Access   (Followers: 2)
BJPsych Open     Open Access   (Followers: 3)
Brain Impairment     Full-text available via subscription   (Followers: 2, SJR: 0.321, CiteScore: 1)
Breast Cancer Online     Full-text available via subscription   (Followers: 4)
Britannia     Full-text available via subscription   (Followers: 11, SJR: 0.111, CiteScore: 0)
British Actuarial J.     Full-text available via subscription  
British Catholic History     Hybrid Journal   (Followers: 2, SJR: 0.133, CiteScore: 1)
British J. for the History of Science     Hybrid Journal   (Followers: 24, SJR: 0.235, CiteScore: 0)
British J. of Anaesthetic and Recovery Nursing     Full-text available via subscription   (Followers: 8)
British J. of Music Education     Hybrid Journal   (Followers: 24, SJR: 0.564, CiteScore: 1)
British J. Of Nutrition     Hybrid Journal   (Followers: 90, SJR: 1.612, CiteScore: 4)
British J. of Political Science     Hybrid Journal   (Followers: 217, SJR: 4.661, CiteScore: 4)
British J. of Psychiatry     Hybrid Journal   (Followers: 221, SJR: 2.844, CiteScore: 3)
Bulletin of Entomological Research     Hybrid Journal   (Followers: 13, SJR: 0.805, CiteScore: 2)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 0.555, CiteScore: 1)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2, SJR: 0.44, CiteScore: 0)
Bulletin of the School of Oriental and African Studies     Hybrid Journal   (Followers: 21, SJR: 0.146, CiteScore: 0)
Business and Human Rights J.     Full-text available via subscription   (Followers: 4, SJR: 0.536, CiteScore: 1)
Business Ethics Quarterly     Full-text available via subscription   (Followers: 18, SJR: 1.098, CiteScore: 2)
Business History Review     Hybrid Journal   (Followers: 16, SJR: 0.347, CiteScore: 1)
Cambridge Archaeological J.     Hybrid Journal   (Followers: 151, SJR: 1.121, CiteScore: 1)
Cambridge Classical J.     Full-text available via subscription   (Followers: 24, SJR: 0.101, CiteScore: 0)
Cambridge J. of Postcolonial Literary Inquiry     Hybrid Journal   (Followers: 7)
Cambridge Law J.     Hybrid Journal   (Followers: 200, SJR: 0.213, CiteScore: 0)
Cambridge Opera J.     Hybrid Journal   (Followers: 4, SJR: 0.14, CiteScore: 0)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 11, SJR: 0.299, CiteScore: 1)
Cambridge Yearbook of European Legal Studies     Full-text available via subscription  
Camden Fifth Series     Full-text available via subscription   (Followers: 3)
Canadian Entomologist     Hybrid Journal   (Followers: 5, SJR: 0.482, CiteScore: 1)
Canadian J. of Emergency Medicine     Hybrid Journal   (Followers: 13, SJR: 0.624, CiteScore: 1)
Canadian J. of Law & Jurisprudence     Full-text available via subscription   (Followers: 11, SJR: 0.237, CiteScore: 0)
Canadian J. of Law and Society     Hybrid Journal   (Followers: 20, SJR: 0.259, CiteScore: 1)
Canadian J. of Mathematics / J. canadien de mathématiques     Hybrid Journal  
Canadian J. of Neurological Sciences     Full-text available via subscription   (SJR: 0.549, CiteScore: 1)
Canadian J. of Political Science/Revue canadienne de science politique     Full-text available via subscription   (Followers: 25, SJR: 0.385, CiteScore: 1)
Canadian J. on Aging     Hybrid Journal   (Followers: 13, SJR: 0.426, CiteScore: 1)
Canadian Mathematical Bulletin     Hybrid Journal  
Canadian Yearbook of Intl. Law / Annuaire canadien de droit international     Full-text available via subscription   (Followers: 3)
Cardiology in the Young     Hybrid Journal   (Followers: 34, SJR: 0.372, CiteScore: 1)
Central European History     Full-text available via subscription   (Followers: 32, SJR: 0.159, CiteScore: 0)
Children Australia     Partially Free   (Followers: 2, SJR: 0.255, CiteScore: 0)
China Quarterly     Hybrid Journal   (Followers: 52, SJR: 2.289, CiteScore: 3)
Chinese J. of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Church History : Studies in Christianity and Culture     Full-text available via subscription   (Followers: 75, SJR: 0.106, CiteScore: 0)
Classical Quarterly     Full-text available via subscription   (Followers: 35, SJR: 0.204, CiteScore: 0)
Classical Review     Full-text available via subscription   (Followers: 29)
CNS Spectrums     Hybrid Journal   (Followers: 3, SJR: 1.391, CiteScore: 3)
Cognitive Behaviour Therapist     Hybrid Journal   (Followers: 14)
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4, SJR: 0.839, CiteScore: 1)
Communications in Computational Physics     Full-text available via subscription   (Followers: 3, SJR: 1.048, CiteScore: 2)
Comparative Studies in Society and History     Full-text available via subscription   (Followers: 49, SJR: 0.585, CiteScore: 1)
Compositio Mathematica     Full-text available via subscription   (SJR: 3.139, CiteScore: 1)
Contemporary European History     Hybrid Journal   (Followers: 34, SJR: 0.263, CiteScore: 1)
Continuity and Change     Hybrid Journal   (Followers: 12, SJR: 0.107, CiteScore: 0)
Dance Research J.     Full-text available via subscription   (Followers: 15, SJR: 0.211, CiteScore: 0)
Development and Psychopathology     Hybrid Journal   (Followers: 9, SJR: 2.068, CiteScore: 4)
Dialogue Canadian Philosophical Review/Revue canadienne de philosophie     Full-text available via subscription   (Followers: 5, SJR: 0.156, CiteScore: 0)
Diamond Light Source Proceedings     Full-text available via subscription   (Followers: 1)
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 14, SJR: 0.471, CiteScore: 1)
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 10, SJR: 0.561, CiteScore: 1)
Early China     Hybrid Journal   (Followers: 3)
Early Music History     Hybrid Journal   (Followers: 9, SJR: 0.101, CiteScore: 0)
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 5)
East Asian J. on Applied Mathematics     Full-text available via subscription   (SJR: 0.418, CiteScore: 1)
Ecclesiastical Law J.     Full-text available via subscription   (Followers: 6, SJR: 0.114, CiteScore: 0)
Econometric Theory     Hybrid Journal   (Followers: 18, SJR: 2.915, CiteScore: 1)
Economics and Philosophy     Hybrid Journal   (Followers: 18, SJR: 0.622, CiteScore: 1)
Edinburgh J. of Botany     Hybrid Journal   (SJR: 0.283, CiteScore: 1)
Educational and Developmental Psychologist     Full-text available via subscription   (Followers: 10, SJR: 0.146, CiteScore: 0)
Eighteenth-Century Music     Hybrid Journal   (Followers: 13, SJR: 0.113, CiteScore: 0)
English Language and Linguistics     Hybrid Journal   (Followers: 24, SJR: 0.52, CiteScore: 1)
English Profile J.     Hybrid Journal   (Followers: 2)
English Today     Hybrid Journal   (Followers: 13, SJR: 0.279, CiteScore: 0)
Enterprise & Society : The Intl. J. of Business History     Hybrid Journal   (Followers: 18, SJR: 0.245, CiteScore: 1)
Environment and Development Economics     Hybrid Journal   (Followers: 40, SJR: 0.617, CiteScore: 1)
Environmental Conservation     Hybrid Journal   (Followers: 60, SJR: 1.028, CiteScore: 2)
Environmental Practice     Full-text available via subscription   (Followers: 3, SJR: 0.145, CiteScore: 0)
Epidemiology & Infection     Hybrid Journal   (Followers: 18, SJR: 1.128, CiteScore: 2)
Epidemiology and Psychiatric Sciences     Hybrid Journal   (Followers: 3, SJR: 1.494, CiteScore: 2)
Episteme     Hybrid Journal   (Followers: 12, SJR: 0.756, CiteScore: 1)
Ergodic Theory and Dynamical Systems     Hybrid Journal   (Followers: 2, SJR: 1.193, CiteScore: 1)
Ethics & Intl. Affairs     Full-text available via subscription   (Followers: 17, SJR: 0.557, CiteScore: 1)
European Constitutional Law Review (EuConst)     Full-text available via subscription   (Followers: 35, SJR: 1.009, CiteScore: 1)
European J. of Applied Mathematics     Hybrid Journal   (SJR: 0.52, CiteScore: 1)
European J. of Intl. Security     Hybrid Journal   (Followers: 1)
European J. of Sociology     Hybrid Journal   (Followers: 36, SJR: 0.643, CiteScore: 1)
European Political Science Review     Hybrid Journal   (Followers: 27, SJR: 1.816, CiteScore: 2)
European Review     Hybrid Journal   (Followers: 19, SJR: 0.131, CiteScore: 0)
Evolutionary Human Sciences     Open Access  
Experimental Agriculture     Hybrid Journal   (Followers: 14, SJR: 0.542, CiteScore: 1)
Expert Reviews in Molecular Medicine     Hybrid Journal   (Followers: 1, SJR: 1.647, CiteScore: 4)
Fetal and Maternal Medicine Review     Hybrid Journal   (Followers: 6)
Financial History Review     Full-text available via subscription   (Followers: 15, SJR: 0.238, CiteScore: 1)
Foreign Policy Bulletin     Hybrid Journal   (Followers: 6)
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Genetics Research     Hybrid Journal   (Followers: 4, SJR: 0.483, CiteScore: 1)
Geological Magazine     Hybrid Journal   (Followers: 16, SJR: 0.966, CiteScore: 2)
Glasgow Mathematical J.     Full-text available via subscription   (SJR: 0.604, CiteScore: 0)
Global Constitutionalism     Hybrid Journal   (Followers: 17)
Global Mental Health     Open Access   (Followers: 9)
Global Sustainability     Open Access  
Government and Opposition     Full-text available via subscription   (Followers: 24, SJR: 0.965, CiteScore: 2)
Greece & Rome     Partially Free   (Followers: 30, SJR: 0.113, CiteScore: 0)
Hague J. on the Rule of Law     Full-text available via subscription   (Followers: 15, SJR: 0.271, CiteScore: 1)
Harvard Theological Review     Full-text available via subscription   (Followers: 79, SJR: 0.165, CiteScore: 0)
Health Economics, Policy and Law     Hybrid Journal   (Followers: 29, SJR: 0.745, CiteScore: 1)
Hegel Bulletin     Full-text available via subscription   (Followers: 2)
High Power Laser Science and Engineering     Open Access   (Followers: 3, SJR: 0.901, CiteScore: 3)
Historical J.     Hybrid Journal   (Followers: 39, SJR: 0.247, CiteScore: 1)
History in Africa     Full-text available via subscription   (Followers: 9)
Horizons     Partially Free   (Followers: 1, SJR: 0.129, CiteScore: 0)
Industrial and Organizational Psychology     Hybrid Journal   (Followers: 27, SJR: 0.916, CiteScore: 1)
Infection Control and Hospital Epidemiology     Full-text available via subscription   (Followers: 42, SJR: 1.97, CiteScore: 3)
Intl. & Comparative Law Quarterly     Full-text available via subscription   (Followers: 253, SJR: 0.369, CiteScore: 1)
Intl. Annals of Criminology     Full-text available via subscription  
Intl. J. of Asian Studies     Hybrid Journal   (Followers: 13, SJR: 0.143, CiteScore: 0)
Intl. J. of Astrobiology     Hybrid Journal   (Followers: 4, SJR: 0.548, CiteScore: 1)
Intl. J. of Cultural Property     Full-text available via subscription   (Followers: 13, SJR: 0.253, CiteScore: 1)
Intl. J. of Disability Management Research     Full-text available via subscription   (Followers: 9, SJR: 0.105, CiteScore: 0)
Intl. J. of Law in Context     Hybrid Journal   (Followers: 17, SJR: 0.275, CiteScore: 1)
Intl. J. of Legal Information     Full-text available via subscription   (Followers: 342)
Intl. J. of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 10, SJR: 0.184, CiteScore: 1)
Intl. J. of Middle East Studies     Hybrid Journal   (Followers: 72, SJR: 0.434, CiteScore: 0)
Intl. J. of Technology Assessment in Health Care     Hybrid Journal   (Followers: 14, SJR: 0.714, CiteScore: 1)
Intl. Labor and Working-Class History     Full-text available via subscription   (Followers: 14, SJR: 0.182, CiteScore: 0)
Intl. Organization     Full-text available via subscription   (Followers: 106, SJR: 8.527, CiteScore: 5)
Intl. Psychogeriatrics     Hybrid Journal   (Followers: 13, SJR: 1.048, CiteScore: 2)
Intl. Review of Social History     Full-text available via subscription   (Followers: 27, SJR: 0.315, CiteScore: 1)
Intl. Review of the Red Cross     Full-text available via subscription   (Followers: 13, SJR: 0.214, CiteScore: 0)
Intl. Theory: A J. of Intl. Politics, Law and Philosophy     Hybrid Journal   (Followers: 19, SJR: 2.293, CiteScore: 2)
Iraq     Full-text available via subscription   (Followers: 4)
Irish Historical Studies     Hybrid Journal   (Followers: 6, SJR: 0.103, CiteScore: 0)
Irish J. of Psychological Medicine     Hybrid Journal   (Followers: 2, SJR: 0.221, CiteScore: 0)
Israel Law Review     Hybrid Journal   (Followers: 2, SJR: 0.165, CiteScore: 0)
Italian Political Science Review / Rivista Italiana di Scienza Politica     Hybrid Journal  
Itinerario     Full-text available via subscription   (Followers: 11, SJR: 0.158, CiteScore: 0)
J. of African History     Hybrid Journal   (Followers: 21, SJR: 0.348, CiteScore: 1)
J. of African Law     Full-text available via subscription   (Followers: 3, SJR: 0.113, CiteScore: 0)
J. of Agricultural and Applied Economics     Open Access   (Followers: 2, SJR: 0.263, CiteScore: 1)
J. of Agricultural Science     Full-text available via subscription   (Followers: 8, SJR: 0.563, CiteScore: 1)
J. of American Studies     Hybrid Journal   (Followers: 20, SJR: 0.164, CiteScore: 0)
J. of Anglican Studies     Hybrid Journal   (Followers: 6, SJR: 0.101, CiteScore: 0)
J. of Applied Animal Nutrition     Hybrid Journal   (Followers: 4)
J. of Asian Studies     Full-text available via subscription   (Followers: 41, SJR: 0.591, CiteScore: 1)
J. of Benefit-Cost Analysis     Hybrid Journal   (Followers: 4)
J. of Biosocial Science     Hybrid Journal   (Followers: 4, SJR: 0.48, CiteScore: 1)
J. of British Studies     Full-text available via subscription   (Followers: 32, SJR: 0.246, CiteScore: 0)

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Similar Journals
Journal Cover
International Journal of Microwave and Wireless Technologies
Journal Prestige (SJR): 0.184
Citation Impact (citeScore): 1
Number of Followers: 10  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1759-0787 - ISSN (Online) 1759-0795
Published by Cambridge University Press Homepage  [387 journals]
  • MRF volume 11 issue 8 Cover and Front matter
    • PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719001235
      Issue No: Vol. 11, No. 8 (2019)
       
  • MRF volume 11 issue 8 Cover and Back matter
    • PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719001247
      Issue No: Vol. 11, No. 8 (2019)
       
  • A new method for path-loss modeling
    • Authors: Qiang Li; Hongxin Zhang, Yang Lu, Tianyi Zheng, Yinghua Lv
      Pages: 739 - 746
      Abstract: In this paper, a new path-loss model for electromagnetic wave in an indoor multipath environment is proposed based on matching coefficient, polarization matching factor, and normalized field intensity direction function. This model is called the Friis-extension (Friis-EXT) model, because it operates as the Friis model under certain conditions. In addition, in the modeling process of the path-loss in an indoor environment, the reflective surfaces in the environment and form of the antenna are considered. Afterwards, the path-loss data in an indoor corridor environment are measured, and the maximum error between the theoretical value and the measured data is
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000084
      Issue No: Vol. 11, No. 8 (2019)
       
  • Coherent J-Band radiating arrays based on ×27 CMOS activemultiplier
           chips
    • Authors: Roman Klimovich; Samuel Jameson, Eran Socher
      Pages: 747 - 754
      Abstract: This paper presents a hybrid design of 1 × 2 and 1 × 4 arrays operating in 0.277–0.292 THz on 65 nm Complementary metal–oxide–semiconductor (CMOS) technology. Each of the chips has an X-band input with 3 ×3 multiplier stages and connected at the output to an on-chip ring antenna. A wideband microstrip Wilkinson four-way and two-way power dividers have been developed on a multilayer printed circuit board to feed the array elements with proper radio frequency and direct current inputs. Demonstrating improvements in effective isotropically radiated power and in total radiated power compared to a single CMOS element, the hybrid integration approach proves effective in implementing coherent THz transmitter arrays. Theoretical and practical factors that reduce the radiated power compared with ideal arrays are also discussed.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000436
      Issue No: Vol. 11, No. 8 (2019)
       
  • Compact bandpass-filtering response power divider with high-frequency
           selectivity and high isolation
    • Authors: Jiawei Li; Kaijun Song, Fei Xia, Shema Richard Patience, Song Guo, Maoyu Fan
      Pages: 755 - 760
      Abstract: A compact high-isolation power divider with bandpass response and high-frequency selectivity is presented in this letter. Two dual-mode resonators are used to realize filtering response. The circuit size of the proposed power divider can be reduced by using dual-mode capacitance loaded square meander loop resonators. Due to capacitive load, the resonator can exhibit slow-wave characteristics, which can be utilized to suppress harmonics and reduce size. The simulated and measured results show reasonable agreement.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078718001654
      Issue No: Vol. 11, No. 8 (2019)
       
  • Wideband out-of-phase power dividers with improved isolation performance
    • Authors: Kaijun Song; Fei Xia, Yuxuan Chen, Yu Zhu, Jiawei Li, Yong Fan
      Pages: 761 - 764
      Abstract: A compact wideband out-of-phase power divider (PD) with improved isolation performance is proposed. This divider is formed by connecting an additional stub for isolation to output ports of a traditional Marchand balun with a defected ground structure (DGS) been used. To verify the design, a prototype divider is fabricated and tested. The measured results validate the 53.86% band-width centered at 3.43 GHz with more than 15 dB return loss at all ports, more than 17 dB isolation, respectively.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000102
      Issue No: Vol. 11, No. 8 (2019)
       
  • Compact filtering power dividers with wide upper stopband
    • Authors: Gaoya Dong; Weimin Wang, Yuanan Liu
      Pages: 765 - 773
      Abstract: A series of compact filtering power dividers (FPDs) with simple layouts are proposed based on coupling topology. The structure of the presented FPD1 is composed of three resonators and one isolating resistor. These FPDs can be designed based on coupling matrix filter theory. A half-wave transmission line is employed in FPD2 to introduce a transmission zero (TZ) locating at 1.27f0. The FPD3 is designed by replacing quarter-wave transmission lines in FPD2 with quarter-wave coupled lines, which will produce a TZ locating at 1.96 f0 and extend upper stopband bandwidth. For verification, three FPDs centered at 2.45 GHz are fabricated and measured. All measured results are in good agreement with the full-wave simulation results.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000655
      Issue No: Vol. 11, No. 8 (2019)
       
  • Multi-band rejection filters based on spoof surface plasmon polaritons and
           folded split-ring resonators
    • Authors: Luping Li; Lijuan Dong, Peng Chen, Kai Yang
      Pages: 774 - 781
      Abstract: A dualband rejection filter and a triband rejection filter are proposed in this letter, both of which are implemented by cascading spoof surface plasmon polaritons (SSPPs) of the same structure but with diverse rejection bands. Compared with traditional ones, the proposed filters provide more compact structures, wider rejection bands, and better independent tunability. In the proposed filters, the rejection bandwidth, the center frequency of the rejection band and the filter's cutoff frequency can be adjusted independently. And the different rejection bands in the same filter also can be independently controlled. Agreements between the dispersion of SSPP units and the S21 of filters are also presented. Measurement results demonstrate that both filters load multiple rejection bands on the 27.7 GHz wide low-pass band and all the rejection bands locate in Ku and K bands. The average rejection bandwidth and the average rejection depth of the two filters are 1.49 GHz and 42.1 dB, respectively.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000369
      Issue No: Vol. 11, No. 8 (2019)
       
  • A tunable open ring coupling structure and its application in fully
           tunable bandpass filter
    • Authors: Zhonghai Zhang; Fei Zhao, Aiting Wu
      Pages: 782 - 786
      Abstract: This letter presents a novel tunable coupling structure to simplify the design complexity of the miniaturized fully tunable filter by using open ring and varactors. Based on the proposed novel tunable coupling structure, a fully tunable bandpass filter is implemented with independently tunable operating frequency and bandwidth. The tunable resonator and tunable coupling structure can be easily combined to improve Out-of-band suppression performance. The design procedure of a fully tunable bandpass filter consists of five tunable cavities and tunable coupling rings is also proposed. A prototype of the proposed fully tunable filter is built to verify the design experimentally. Good agreement between simulated and measured results is obtained.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000485
      Issue No: Vol. 11, No. 8 (2019)
       
  • A multilayer substrate integrated filter using dual dielectric modes
    • Authors: Xiao-Xiao Yuan; Li-Heng Zhou, Jian-Xin Chen
      Pages: 787 - 791
      Abstract: In this paper, a novel multilayer substrate integrated dual-mode dielectric resonator (DR) filter is proposed. The square dual-mode DR is made of the high permittivity substrate by removing the undesired portions and the surface coppers so that the relatively high unloaded quality factor of the dominate TM11 pair can be obtained which compared to these fully dielectric-filled substrate integrated waveguides. Meanwhile, it can be easily integrated in an equivalent cavity implemented by multilayer printed circuit boards for filter design, showcasing low in-band loss, light weight, and compact size. For demonstration, a multilayer substrate integrated DR bandpass filter centered at X-band is designed and measured. Good agreement between the simulated and measured results can be observed, and the measured insertion loss at the passband center frequency (8.38 GHz) is 1.1 dB.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000527
      Issue No: Vol. 11, No. 8 (2019)
       
  • A low insertion loss low-pass filter based on single comb-shaped spoof
           surface plasmon polaritons
    • Authors: Luping Li; Lijuan Dong, Peng Chen, Kai Yang
      Pages: 792 - 796
      Abstract: This paper presents a low insertion loss low-pass filter based on the spoof surface plasmon polariton (SSPP) with single comb-shape. Compared with traditional ones, the proposed filter provides lower insertion loss and return loss by optimizing the structural parameters of the mode conversion and SSPP parts. According to the measurement results, the average insertion loss of the fabricated filter is 0.41 dB and the return loss of which at the near-zero-hertz band is
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000564
      Issue No: Vol. 11, No. 8 (2019)
       
  • Single layer miniaturized ultra-thin FSS with five closely spaced bands
    • Authors: Anupam Dey; Rajarshi Sanyal
      Pages: 797 - 805
      Abstract: This Paper reveals a novel single layer five band frequency selective surface (FSS). Novelties of the proposed FSS lie in its five closely spaced stop bands at 2.4, 3.38, 4.82, 6.32, and 7.75 GHz as well as the reduced single layer structural thickness (0.0016 λ0) and the miniaturized unit cell size (0.0656 λ0) at lower resonant frequency as compared to the existing multiband FSS. The unit cell structure consists of six octagonal concentric interconnected loops. Adjacent loop interconnection technique reduces the cell size by more than 44%. Furthermore, arrow-shaped rings are also introduced on each corner of the outermost octagonal loop, and using this technique approximate 23% cell miniaturization can be achieved. In addition, the proposed FSS exhibits excellent angular stability.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000370
      Issue No: Vol. 11, No. 8 (2019)
       
  • Design and performance analysis of a conformal CPW fed wideband antenna
           with Mu-Negative metamaterial for wearable applications
    • Authors: Deepa Negi; Rajesh Khanna, Jaswinder Kaur
      Pages: 806 - 820
      Abstract: In this paper, a flexible CPW fed ultrawide band (UWB) antenna with mu-negative (MNG) metamaterial is designed, fabricated, and tested for wearable applications. Initially, a UWB antenna of size 50 mm × 43 mm is fabricated on two different substrates, viz. flexible FR4 and semi-flexible Rogers RT/duroid 5880. A metamaterial structure fabricated on flexible FR4 shows a magnetic resonance from 7.2 GHz to 9.2 GHz with maximum stop band attenuation (−49 dB) and high MNG value (−2121.6) at 7.87 GHz. Then a (3 × 3) array of designed MNG metasurface is used as ground plane with flexible UWB antenna, which improves its overall gain and radiation pattern. The performance of the flexible antenna with/without metamaterial at various distances from flat and cylindrical three-layered human phantom of skin, fat, and muscle is studied. Further, the bending characteristics at different angles and performance over thin metallic sheet is also evaluated. Additionally, the peak specific absorption rate value averaged over 1 g of tissue at three chosen frequencies from UWB range (3, 5, 10 GHz) with/without metamaterial using 0.3 and 0.1 W of input power is also analyzed. The simulated and measured results are in good agreement which confirms that the designed antenna is a good candidate for wearable applications.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000497
      Issue No: Vol. 11, No. 8 (2019)
       
  • SIW resonator fed horn mounted compact DRA with enhanced gain for
           multiband applications
    • Authors: Pramod Kumar; Jitendra Kumar, Shailendra Singh, Utkarsh, Santanu Dwari
      Pages: 821 - 828
      Abstract: A novel design of compact and light-weight horn mounted cylindrical dielectric resonator antenna (CDRA) fed by substrate integrated waveguide (SIW) resonator has been investigated for high gain and multiband applications. SIW resonator contains two closely spaced longitudinal slots of equal length and unequal width to excite the CDRA. These slots are responsible for introducing triple resonating bands. The excited mode in dielectric resonator by longitudinal slots is EH11δ mode. The achieved impedance bandwidths are 65, 180, and 240 MHz at resonant frequencies 9.78, 10.58, and 11.84 GHz, respectively, for |S11|
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000163
      Issue No: Vol. 11, No. 8 (2019)
       
  • High-gain cavity backed patch antenna arrays at 140 GHz based on LTCC
           technology
    • Authors: Zihang Qi; Xiuping Li, Jinjin Chu, Jun Xiao, Hua Zhu
      Pages: 829 - 834
      Abstract: In this paper, high-gain cavity backed patch antenna arrays are proposed based on low temperature co-fired ceramic technology at 140 GHz. By introducing a substrate integrated cavity to the patch antenna element, the gain is enhanced by 3.3 dB. Moreover, a rectangular ring is loaded around the patch for better impedance matching and further gain enhancement. The final simulated maximum gain of the proposed antenna element is 9.8 dBi. Based on the proposed high-gain antenna element, a 4 × 4-element array and an 8 × 8- element array are presented. The 4 × 4-element array shows a measured maximum gain of 16.9 dBi with 9.5 GHz bandwidth (136.2–145.7 GHz) and the 8 × 8-element array shows a measured maximum gain of 21.8 dBi with 9.8 GHz bandwidth(136.7–146.5 GHz), respectively.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S175907871900031X
      Issue No: Vol. 11, No. 8 (2019)
       
  • Broadband CPW-fed circularly polarized antenna for IoT-based navigation
           system
    • Authors: Amit Birwal; Sanjeev Singh, Binod Kumar Kanaujia, Sachin Kumar
      Pages: 835 - 843
      Abstract: The paper presents a new coplanar waveguide (CPW)-fed rectangular patch antenna with a square-shaped ground plane that can be employed in modern advanced navigation systems. For realizing broad impedance bandwidth in the proposed antenna, a wide slot is introduced in the square ground plane and the rectangular patch is shifted toward the left edge of the ground surface. In addition, by means of introducing square-shaped stubs near the left and right edge of the ground plane, the circular polarization is achieved at L1, L2, and L5 satellite bands. As per the simulation results, the proposed antenna provides a wide impedance bandwidth (S11
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000461
      Issue No: Vol. 11, No. 8 (2019)
       
  • Design of WLAN/WiMAX band notch super-wideband microstrip fractal antennas
    • Authors: S. S. Abdpour; N. Azadi-Tinat, H. Oraizi, J. Ghalibafan
      Pages: 844 - 850
      Abstract: A super-wideband microstrip fractal antenna is designed with miniaturized dimensions of 21 mm × 23.5 mm × 1 mm and generation of dual rejection bands for WLAN/WiMAX systems has been achieved. The triangular fractal shape slots are placed inside a circular patch and the antenna is miniaturized by using a repetition frequency resonance technique. The proposed antenna frequency range 2.6–40 GHz operates for VSWR of less than 2. Two band rejections for the frequency ranges 5.1–5.8 GHz and 3.4–3.7 GHz are created by one enhanced slot at the feed line and one split-ring resonator at the back of antenna. HFSS 3D software was used for computer simulation. The proposed antenna is fabricated on the FR4 substrate with 1 mm thickness. The measurement data show good agreement with the simulation results.
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S1759078719000540
      Issue No: Vol. 11, No. 8 (2019)
       
  • Gain enhancement for MIMO antenna using metamaterial structure
    • Authors: Ngoc Lan Nguyen; Van Yem Vu
      Pages: 851 - 862
      Abstract: In this paper, a multiple input multiple output antenna which operates at 5.8 GHz for wireless local area network applications is proposed. The proposed antenna is composed of two sets of four elements antenna array (2 × 2) on the top and a novel metamaterial structure on the ground plane. Here, the ground plane, which includes a lattice of 2 × 5 unit cells of metamaterial structure, is utilized in order to improve parameters of the antenna. Thanks to the proposed metamaterial structure, not only gain and bandwidth of antenna are enhanced, but also mutual coupling is reduced. The final design, with an overall size of 137 × 77 × 3.048 mm3, resulted in a |S11|
      PubDate: 2019-10-01T00:00:00.000Z
      DOI: 10.1017/S175907871900059X
      Issue No: Vol. 11, No. 8 (2019)
       
 
 
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