 Subjects -> INSTRUMENTS (Total: 63 journals)
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- Generation of Patterns From Concentric Ring Arrays With Dipoles and
Waveguides-
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Authors: Naik; Ketavath Kumar
Pages: 1 - 19
Abstract: Radiation patterns are produced from concentric ring arrays by using practical elements, such as dipoles and waveguides which is presented in this article. Ring arrays, which produces high sidelobes, create electromagnetic interference (EMI) problems. To overcome this problem, analysis and synthesis is carried out and generates the directional patterns of concentric ring arrays using practical radiators. The directivity is observed for concentric dipole ring arrays and concentric waveguide ring arrays is 72.21 dB. The comparative data is presented in the result.
Keywords: Materials Science and Engineering; Engineering; Surveys, Measurements, & Response Systems
Citation: International Journal of Measurement Technologies and Instrumentation Engineering (IJMTIE), Volume: 7, Issue: 2 (2018) Pages: 1-19
PubDate: 2018-07-01T04:00:00Z
DOI: 10.4018/IJMTIE.2018070101
Issue No: Vol. 7, No. 2 (2018)
- Measurement and Monitoring System With Real Time Data Logging Based on
Microcontroller-
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Authors: Mohrem; Abdelkrim, Chetate, Boukhemis, Guia, Houssem Eddine
Pages: 20 - 40
Abstract: This article presents a microcontroller-based system for measurement and monitoring voltage of a three-phase electrical system with real-time data logging abilities. The proposed system uses voltage signals and time data as input. The output is an LCD and data files. The system accurately records abnormal voltage variations which have occurred on the system. A PC software is developed to receive and save data in two spreadsheet files through a serial port. Ihe log file contains the measured voltage, which is recorded periodically with a predefined time interval, and the second file contains the type of the fault. The proposed system is first simulated by ISIS-Proteus and then realized and implemented on an electronic board. It is beneficial to make detailed, scientific judgments and analysis for the voltage system to be supplied to a load. Because of the very simple circuit, it finds applications in industrial facilities. It is also useful in applying final circuits for both investigation and monitoring purposes.
Keywords: Materials Science and Engineering; Engineering; Surveys, Measurements, & Response Systems
Citation: International Journal of Measurement Technologies and Instrumentation Engineering (IJMTIE), Volume: 7, Issue: 2 (2018) Pages: 20-40
PubDate: 2018-07-01T04:00:00Z
DOI: 10.4018/IJMTIE.2018070102
Issue No: Vol. 7, No. 2 (2018)
- Single Stage C-Band Erbium-Doped Fiber Amplifier (EDFA) Development and
Performance Evaluation-
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Authors: Alaruri; Sami D.
Pages: 41 - 49
Abstract: In this work, a single-stage C-band erbium-doped fiber amplifier (EDFA) has been constructed and characterized. Gain (G) and noise figure (NF) measurements collected for the C-band EDFA as a function of wavelength (1528.8 to 1562.3 nm) and laser pump powers are discussed. Further, the EDFA conversion efficiency (CE) as a function of laser pump powers is presented. Simplified mathematical expressions for the EDFA gain, NF, and CE are provided. The C-band EDFA signal gain remained flat in the spectral region 1539 to 1562 nm. Moreover, the C-band EDFA NF increased with wavelength and decreased with the 1480 nm laser pump powers. Additionally, the C-band EDFA maximum achieved conversion efficiency and signal gain is 22.64% at P1=19.49 mW and 22.6 dB at 1531.1 nm, respectively.
Keywords: Materials Science and Engineering; Engineering; Surveys, Measurements, & Response Systems
Citation: International Journal of Measurement Technologies and Instrumentation Engineering (IJMTIE), Volume: 7, Issue: 2 (2018) Pages: 41-49
PubDate: 2018-07-01T04:00:00Z
DOI: 10.4018/IJMTIE.2018070103
Issue No: Vol. 7, No. 2 (2018)
- Design of S-Band Antenna With L-Shaped Slits on Rectangular Patch With
Defected Ground Structure-
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Authors: Naik; Ketavath Kumar, Palla, Ravi Kumar, Rani, Sriram Sandhya, Gopi, Dattatreya
Pages: 50 - 58
Abstract: Monopole L-shaped slits are embedded on rectangular patch antenna is designed for S-band applications. The proposed antenna is a square patch radiator with four L-shaped slits are presented. The proposed antenna radiates at 3GHz resonance frequency with bandwidth of 1.9GHz and -26.4dB return loss. The impedance bandwidth is enhanced 62.7% with proposed antenna model. The proposed L-shaped slit patch antenna is small in size and compact. The radiation pattern is presented in the results and it works at S-band applications.
Keywords: Materials Science and Engineering; Engineering; Surveys, Measurements, & Response Systems
Citation: International Journal of Measurement Technologies and Instrumentation Engineering (IJMTIE), Volume: 7, Issue: 2 (2018) Pages: 50-58
PubDate: 2018-07-01T04:00:00Z
DOI: 10.4018/IJMTIE.2018070104
Issue No: Vol. 7, No. 2 (2018)
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