Design and Analysis of a Rectangular Shaped Quasi-Helix Antenna for Satellite And Wireless Communication

This paper presents a rectangular-shaped quasihelical antenna designed for C band applications. In terms of dimensions, it maintains a compact form, measuring 32 mm in length, 32 mm in width, and 6.8 mm in height, and ensuring suitability for various applications including satellite communication, Global Positioning System (GPS)/wireless local-area network (WLAN) systems, and mobile communication that require circularly polarized radiation. The antenna configuration comprises three 120-degree L-shaped segments, collectively forming a complete rectangular cycle, and precisely optimized for operation at 6.5 GHz. It offers a wide operational range spanning from 5.6 GHz to 7.77 GHz, featuring an impressive axial ratio bandwidth (AR BW) of 23.08%. The antenna exhibits a reflection coefficient of -31 dB at 6.6 GHz and -28 dB at 6.5 GHz. The antenna’s design and analysis are conducted using CST Studio software, with a thorough optimization process geared towards modern multiband communication system requirements. Overall, this paper introduces a promising antenna design catering to C band applications, characterized by its compactness, efficiency, and circular polarization.