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Poster session IV
A TLM Algorithm forWave Propagation In Human Fat and Muscle TissuesWith a Cole-Cole Dispersion Model
Mohammed Kanjaa, Otman El Mrabet, Mohsine Khalladdi
Abdelmalek Essaadi University (Morocco)
A transmission line method (TLM)algorithm is proposedfor electromagnetic (EM) wave propagation in biologicaltissues with the Cole-Cole dispersion Model. A linear behaviorof the polarization current during the time step is assumed.The polarization current density is approached usingLagrange extrapolation polynomial, and the fractionalderivation is obtained according to Riemann definition. Reflectioncoefficients at an air/muscle interfaces simulated ina 1-D domain are found in good agreement with those obtainedfrom the analytic model.
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A Single-Layer, Near-to-Zero Index Metasurface Superstrate for Gain-Enhanced, Circularly Polarized Antenna Designs
Fatima Khoutar (1), Mariem Aznabet (1), Hung Luyen (2), Otman E. Mrabet (1), Nader Behdad (2)
(1)Abdelmalek Essaadi University (Morocco), (2)University of Wisconsin-Madison (USA)
This paper presents a single-metallic-layer, near-to-zero-index metasurface as a superstrate for an antenna to achieve gain enhancement and circular polarization. The proposed metasurface comprises an array of SRRs rotated and aligned diagonally to provide linear-to-circular polarization conversion when placed above a linearly polarized patch antenna. Simulated and measured results show that the proposed antenna system has a 3-dB axial ratio bandwidth of 200 MHz, exhibits a RHCP with a good cross polarization level, and achieves a 6-dB gain enhancement.
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Design and Characterization of Compact Aspen Shape Multi-Element Antenna with Isolation Improvement for SWB Applications
online, live
N. Suguna, S. Revathi
Vellore Institute of Technology (India)
Four element Aspen modeled MIMO antenna printed on Rogers RT Duroid 5880â„¢ substrate and its compact size is 20mm x 23mm. The proposed antenna produce operating bandwidth of 23.66GHz (4.12 to 27.78GHz) and FBW is 148.33%. Proposed antenna has isolation greater than -20dB in the operating SWB and VSWR is less than threshold value 2 in the obtained SWB range. Peak gains at selected frequencies 4.8GHz, 8GHz, 14.1GHz, 16.2GHz and 23.6GHz are 3.16dBi, 5.19dBi, 5.82dBi, 5.13dBi and 6.98dBi respectively.
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online, live
Mohamed Karim Laoufi, Slimane Mekaoui, Mohamed Lamine Tounsi
USTHB University (Algeria)
In this paper, a new multi-standard filter with four resonance frequencies is proposed for radio-mobile including GSM/4G LTE, WLAN and 5 G applications. The design and synthesis is resolved using a new formulation of the FDTD method. The metal finite conductivity and thickness are rigorously taken into account. The FDTD computed results are in good agreement with simulated data obtained with CST electromagnetic tool.
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Microstrip Antenna Array design for UAV Detection
online, live
Pedro Mendes Ruiz (1), Xavier Begaud (2), François Magne (3), Etienne Leder (1)
(1)Bowen ERTE-ETSA (France), (2)Télécom Paris (France), (3)When-AB (France)
This work presents the design of a linear array of microstrip rectangular patch antennas with a cosecant squared elevation radiation pattern. This linear array is one of the elements of a passive radar using signals from 4G base stations for UAV detection. The array is designed to operate from 2.62 GHz to 2.69 GHz.
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