A Quadra-Port Circular-Patch Antenna with DMS/DGS Designed on thin Substrate for WLAN And Satellite X-Band Wireless Applications

The research includes single, and Quadra-port <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MIMO.5.50/7.50GHz</tex> antenna radiating EM wave designed for WLAN and Satellite X-Band applications. The thin substrate with height of 0.254mm is used where radiating-patch with defected-microstrip-feedline is printed on top-plane and defected ground on opposite plane for electromagnetic energy radiation. The single-port dimension is <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">14× 20\ mm²</tex> and four-port <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MIMO5.50/7.50GHz</tex> is <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">28× 40\ mm²</tex> . The single-port produces bandwidth of 5.00GHz-10.0GHz while its <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MIMO5.50/7.50GHz</tex> counterpart achieves bandwidth of 5.50GHz-11.61GHz. The <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MIMO5.50/7.50GHz</tex> configuration maintains isolation of more than 14.0dB with peak gain of 3.0dBi at single-port and 4.50dBi in four-port <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MIMO5.50 / 7.50 GHz</tex> . The diversity parameter includes <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ECC5.50 / 7.50 GHz < 0.001, DG5.50 / 7.50 GHz ≈ 10.0 dB, TARC5.50 / 7.50 GHz<-</tex> 4.0dB, <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">CCL5.50 / 7.50 GHz<0.05 b / s / Hz</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MEG5.50 / 7.50 GHz ≈ 0.0 dB</tex> . The proposed high-speed MIMI5.50/7.50GHz can be deployed in low frequency application infrastructure.