%0 Journal Article
%T CIRCULARLY POLARIZED MICROSTRIP ARRAY ANTENNA FOR GROUND SEGMENT IN QUASI-ZENITH SATELLITE SYSTEM
%A Fitri Yuli Zulkifli
%A Eko Tjipto Rahardjo
%J Makara Seri Teknologi
%D 2012
%I Universitas Indonesia
%X In satellite communication system, antenna plays an important role. Therefore, the antenna must meet some requirements, such as high gain, circular polarization, and good directivity. In this paper, a four element linear array triangular patch microstrip antenna with cross slot is designed to be used for Quasi-Zenith satellite system. A simulation study as well as experimental study was carried out. The simulation showed that the 3 dB axial ratio bandwidth of 87 MHz (2.569-2.656 GHz) is achieved while the measured results showed 96 MHz (2.556-2.652 GHz). The linear array of 4 element antenna has a gain of 13.73 dB and maximum radiation pattern at 40กใ and -40กใ. Simulation and experiment results show that this antenna has met the characteristic requirements of Quasi-Zenith satellite.
%K circular polarization
%K cross slot
%K microstrip antena array
%K Quasi-Zenith satellite
%U http://journal.ui.ac.id/index.php/technology/article/viewFile/1053/968