Studies on the performance of an aperture coupled microstrip line-fed patch antennas on low temperature co-fired ceramic (LTCC) operating at unlicensed 5.8 GHz frequency band is presented. Observation on the controlling parameters of the aperture coupled antenna on LTCC is conducted to investigate the effect of aperture slot at various layers with different height. The proposed concept of this idea is simulated on Ferro A6M microstrip ceramic substrate and compared with the simulated of aperture coupled antenna on Flame Retardent 4 (FR-4) substrate. The aperture coupled antenna using LTCC and FR4 layout is presented in this paper by using the CST 2011 simulation results.
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