Circularly polarized stacked patch antenna array with enhanced bandwidth for S‐band applications. Issue 9 (16th May 2019)

• Record Type: Journal Article
• Authors: Khan, Muhammad S.; Iftikhar, Adnan; Fayyaz, Ahmad; Asif, Sajid M.; Ijaz, Bilal; Shubair, Raed M.; Khan, Shahid A.
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 29:Issue 9(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-16
• Subjects: S‐band -- couple slot stacked patch antenna -- enhanced bandwidth -- circularly polarized; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21830
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: In this article, a circularly polarized coupled slot 1 × 4 stacked patch antenna array with enhanced bandwidth is proposed for S‐band applications. Initially, a patch antenna radiating at 2.79 GHz is designed and maximum energy from feedline to patch element is coupled using two rectangular slots. Whereas, a parallel feedline structure is designed to provide polarization flexibility by creating 0, 90, and 180 o phase differences. Then, a truncated patch element is vertically stacked in the design to achieve broader bandwidth of 600 MHz over frequency range from 2.4 to 3.0 GHz. Finally, a coupled slot 1 × 4 array stacked antenna array having feedline line structure to provide 90 o phase difference for circular polarization is designed and fabricated for measurements. It is observed that the final design achieved target specification having impedance matching (| S 11 | (dB) < −10 dB over 2.4 to 3.0 GHz, broad band circular polarization, and 11.5 dBic total gain. Overall, a good agreement between simulated and measurement results is observed.