Broadband Circularly Polarized CPW-Fed Monopole Antenna with a Via-Free CRLH-TL Unit Cell

Author:

Liu Liangyuan1ORCID,Shi Xiangqun1

Affiliation:

1. Zhongshan Institute, University of Electronic Science and Technology of China, Zhongshan, China

Abstract

This article presents a broadband circularly polarized composite right/left-hand (CRLH) antenna. A compact microstrip line inductor and an interdigital capacitor are used to form a left-handed parallel inductor and a left-handed series capacitor. The metamaterial parameters of the series inductor and the parallel inductor are optimized. The asymmetric perturbation is introduced to excite the circularly polarized (CP) electromagnetic wave. The influence of interdigital capacitance on the electrical performance of the antenna is analyzed theoretically and experimentally. The value of CL is changed to reduce the electrical size of the antenna, and the resonant frequency of the antenna is reduced accordingly. The physical dimensions of this CPW-Fed monopole antenna are 25 mm 24 mm 1 mm. The measured 10 dB wide impedance bandwidth is 79.5%, and the measured 3 dB axial ratio (AR) bandwidth is 56.2%.

Funder

Natural Science Foundation of Guangdong Province

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Investigation on a compact wideband omnidirectional circularly polarized antenna in an indoor propagation channel for 2.4 GHz application;International Journal of Communication Systems;2024-01-17

2. Stub-Loaded Uniplanar Monopole Antenna for Circular Polarization;2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON);2022-12-12

3. A Low-Profile Uniplanar Circularly Polarized Monopole Antenna for X-band Applications;2022 IEEE 9th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON);2022-12-02

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