volume | PIER Journals

Abstract

An aperture coupled printed antenna using frequency selective surface (FSS) reflector is reported in this paper. The proposed antenna includes two layers of FSS reflectors designed with an array of 7×5 crossed elements on the top substrate to achieve wideband, high gain and improved directivity. The antenna implements an aperture coupled radiating element on the bottom substrate which serves as a source feed antenna to the FSS reflector. The proposed structure has an overall dimension of 30×32×1.6 mm³ operating between 6.5 and 8.3 GHz with an impedance bandwidth of 1.8 GHz. The results reveal that the impedance bandwidths in excess of 82.3% and 44.5% have been achieved compared to the source feed antenna and antenna with single layer FSS, respectively. Further, the peak gain of 6.25 dB is also achieved in the operational frequency band with a two-layer FSS which is 29.4% and 15.8% more than the antenna without FSS and antenna with single FSS layer. Due to compact structure, wideband, high gain, and fabrication simplicity, the proposed antenna may be suitable for long distance communication systems.

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Dr. Harikrishna Paik

Dr. Shailendra Kumar Mishra

Dr. Chadalvada Mohan Sai Kumar

Dr. Kambham Premchand