Laboratory Systems and Telecommunications Engineering Decision

Kenitra, Morocco

Laboratory Systems and Telecommunications Engineering Decision

Kenitra, Morocco
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Bri S.,Microwave and Materials Group | Kassimi S.,Laboratory Systems and Telecommunications Engineering Decision | Habibi M.,Laboratory Systems and Telecommunications Engineering Decision | Mamouni A.,CNRS Institute of Electronics, Microelectronics and Nanotechnology
European Journal of Scientific Research | Year: 2011

The paper's purpose estimate the specific absorption rate (SAR) distribution in a human head exposed to electromagnetic field emitted from a handheld cellular phone operating in the 900 MHz and 1800 MHz rang in a partially closed environment. The HFSS software called high frequency structure simulator (HFSS) and the finite-difference time-domain (FDTD) computations were used to evaluate the SAR in realistic anatomically based model of the human head for different antenna-head distances.


Bendali A.,Laboratory Systems and Telecommunications Engineering Decision | Habibi M.,Laboratory Systems and Telecommunications Engineering Decision | Bri S.,Moulay Ismaï University | Elfadl A.,Laboratory Systems and Telecommunications Engineering Decision
Journal of Theoretical and Applied Information Technology | Year: 2015

In the present paper, the optimal design of the rectangular patch antenna parameters, excited by a microstrip line having a power port 50 adapted to Ω, are introduced to the requirement of improvement of radiation characteristics namely reflection coefficient, the standing wave ratio (VSWR), the input impedance of the antenna and bandwidth. The design was performed using the simulator HFSS (High Frequency Structure Simulator) based on the resolution of Maxwell's equations for the ticket of the finite element method. The objective of this improved radiation characteristics of the antenna patch is the full performance of this antenna at 0.92 MHz for RFID applications. Simulation results show that the reflection coefficient reaches a level of less -31dB, the standing wave ratio is equal to 1.057, and the bandwidth is about 2.75%. © 2005 - 2015 JATIT & LLS. All rights reserved.

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