A Compact Wideband Circular Polarized Fabry-Perot Antenna Using Resonance Structure of Thin Dielectric Slabs

IEEE Access

Huy Hung Tran¹  Truong Khang Nguyen¹  Amin M. Abbosh²  Nghia Nguyen-Trong² 

[1] Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam;School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, QLD, Australia;

关键词: Circularly polarized (CP);    dielectric slabs;    Fabry-Perot resonator (FPR);    high gain;    low profile;    wideband;   

DOI  :  10.1109/ACCESS.2018.2872571

来源: DOAJ

【 摘 要 】

A wideband small-footprint circularly polarized Fabry-Perot resonator antenna is presented in this paper. The design employs a partial reflecting surface (PRS) consisting of thin homogeneous dielectric slabs separated by a small air gap. The PRS is analyzed using transmission line theory, which gives more insightful into the theoretical concept and provides a simple tool for design and optimization. An antenna prototype with overall size of 1.2λ_fmin × 1.2λ_fmin × 0.6λ_fmin has been fabricated and experimentally validated (λ_fmin being the free-space wavelength at the minimum operating frequency). The measured impedance matching and axial ratio bandwidths are approximately 55.7% and 47.7%, respectively. In addition, the antenna achieved 3-dB gain bandwidth of 50.9% with a peak gain of 15 dBi. Compared to previous designs targeting similar applications, the antenna proposed here possesses a simple geometry with light weight, ease of optimization and fabrication, as well as enhanced axial ratio bandwidth and 3-dB gain bandwidth.

【 授权许可】

Unknown