E-shaped patch with reactive impedance surface for high gain and broadband circularly polarized antenna |
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| Authors: | Guthi Srinivas Srikar D |
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| Affiliation: | 1. Department of Electronics and Communication Engineering, B V Raju Institute of Technology Narsapur, Narsapur, India;2. Department of Electronics and Communication Engineering, Chaitanya Bharathi Institute of Technology, Hyderabad, India |
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| Abstract: | A low-profile circularly polarized (CP) antenna with high gain and broad bandwidth is aimed at 5-GHz Wi-Fi applications using a symmetrical E-shaped patch. Initially, the radiating element is modeled as a symmetrical E-shape. An array of 4 × 4 rectangular patches are arranged periodically to make up a reactive impedance surface (RIS) structure. Furthermore, the RIS structure is deployed in the middle of a symmetrical E-shaped radiating patch and a perfect electric conductor (PEC) ground plane. As a result, the broadband CP is achieved with high gain. The above-mentioned combinations have achieved a −10-dB reflection coefficient bandwidth of 21.4% (4.92–6.1 GHz) and a 3-dB axial ratio (AR) bandwidth of 15.5% (5.25–6.1 GHz), and the antenna has attained a gain of 7.45–7.53 dBic. |
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| Keywords: | broadband antennas circular polarization E-shaped patch high gain antennas RIS structure |
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