Muhammad Fauzan Edy Purnomo, Sholeh Hadi Pramono, Mauludi Ariesto Pamungkas, Taufik
This paper presents the design and performance analysis of stack-patch and pentagonal microstrip array antenna models based on simulation and measurement results. Both antennas use air-gap for enhancing bandwidth, gain, axial ratio and circular polarization. The paper first discusses stack-patch microstrip array antenna where the results at El=48° agree well with the calculated results of 5 dBic gain. Results also show that the 3-dB axial ratio beamwidth of the whole azimuth ranges about more than 120° for each beam coverage in the conical-cut direction satisfy for mobile satellite communications. Secondly, the paper examines the pentagonal microstrip array antenna model whose results demonstrate that the bandwidth of impedance, axial ratio, and gain at the resonant frequency of 2.4925 GHz are good mainly about 15.67 %, 4.11 % and 52.16 %, respectively. The results further yield the value of S-parameter, axial ratio and gain at 2.4925 GHz to be better about -15.03 dB, 0.06 dB and 8.74 dBic, respectively. Furthermore, performance characteristic especially bandwidth of axial ratio of both antennas mainly caused by a new shape of pentagonal antenna using air-gap and good selection of a feed position are satisfied. © 2006-2015 Asian Research Publishing Network (ARPN).
Electrical Engineering Department, Faculty of Engineering, Brawijaya University, Malang, Indonesia; Physics Department, Faculty of Science, Brawijaya University, Malang, Indonesia; Electrical Engineering Department, California Polytechnic State University, San Luis Obispo, United States
