Abstract
In this paper, a circularly polarized diagonal-shaped microstrip patch antenna for Wi-Fi and mobile applications is proposed. The radiating patch is diagonally trimmed from the opposite corners by length L/2 (i.e., 12 mm) and it resonates at 2.64 GHz with circular polarization. This is achieved using a simple structure of the microstrip antenna which consists of a single layer, single feed patch with smaller size as compared to conventional microstrip patch antenna. This paper presents a comparison of resonant frequency and a change in polarization from linear to circular by simply trimming the corners of the patch with different lengths. The proposed patch antenna is simulated in ANSYS HFSS and a prototype of antenna is fabricated and tested using Keysight Vector Network Analyzer N9925A. Experiments and simulations show that the proposed 12 mm trimmed antenna is capable of providing a gain of 2.17 dBi with an axial ratio of 4.05 dB.
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