Abstract
With the rapid development of wireless communication technology today, circularly polarized antennas are favored by researchers for their anti-interference and anti-fading properties. However, researchers have not treated circularly polarized microstrip antennae with multiple feed points in much detail. This paper aims to show different ways to design a dual-point side-fed circularly polarized microstrip antenna in HFSS. A novel approach to combining the square patch antenna model and the feeder network is proposed, which uses two vertically bent microstrip lines with 1/4 impedance converters to connect the feeder network and the midpoint of the two adjacent sides of the square patch antenna. The feeder network is a 3 dB directional coupler operating at 2.4 GHz and outputs two resonant modes with equal orthogonal spokes and a phase difference of 90\(^\circ \). The parameters are adjusted by the HFSS simulation to make the model conform to the characteristics of a circularly polarized microstrip antenna. The simulation results demonstrate that the proposed structure of circularly polarized microstrip antenna obtained by double-point side feed is simple and the performance is stable and robust.
This paper is supported by National Natural Science Foundation of China (NSFC) under grant No. 62201174.
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Lv, S., Shi, Y. (2023). Dual-Point Side-Fed Circularly Polarized Microstrip Antenna Design. In: Li, A., Shi, Y., Xi, L. (eds) 6GN for Future Wireless Networks. 6GN 2022. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 505. Springer, Cham. https://doi.org/10.1007/978-3-031-36014-5_1
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