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A SEMI-DEFECTED GROUND PLANE AND A BINARY GENETIC ALGORITHM FOR DESIGNING A VERY COMPACT TRIPLE-BAND PIFA ANTENNA


(Received: 1-Jun.-2022, Revised: 6-Aug.-2022 , Accepted: 18-Aug.-2022)
We suggest in this study a very compact triple-band PIFA antenna for mobile and wireless applications.by using the binary genetic algorithm and a semi-defected ground plane. This antenna with the dimensions of 38×40×1.9 mm3 is dedicated to LTE Band 11 (1427.9-1495.9 MHz), HIPERLAN/2 (5.15-5.35 GHz), WLAN (5.15-5.35 GHz) and 5G Sub-6GHz applications. To accomplish triple-band operation with acceptable performance, the genetic algorithm is use to dictate the form of the ground plane of the antenna. The simulation results showed that the developed PIFA antenna has optimal operation on three frequencies. The first resonance frequency is 1.32 GHz with a bandwidth (S11 <-10 dB) from 1.28 GHz to 1.38 GHz. The middle and higher bands are centred respectively at 3.12 GHz and 5.2 GHz, with a bandwidth from 3.05 to 3.17 GHz and from 4.93 to 5.44 GHz, respectively.

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