Low-Profile Design of Broadband High Gain Circularly Polarized Fabry-Perot Resonator Antenna and its Array with Linearly Polarized Feed | Zendy

Zhen-Guo Liu | Zendy; Wei-Bing Lu | Zendy

Open Access

Low-Profile Design of Broadband High Gain Circularly Polarized Fabry-Perot Resonator Antenna and its Array with Linearly Polarized Feed

Author(s) -

Zhen-Guo Liu,

Wei-Bing Lu

Publication year - 2017

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2017.2675378

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

A novel low profile broadband circularly polarized Fabry-Perot resonator antenna (CP-FPRA) with a linearly polarized feed is proposed. The goal of this antenna is to generate circular polarization with high gain level in broad bandwidth, while maintaining low profile and simple feed configuration. The proposed antenna consists of a primary radiator aligned along 45° with linear polarization, a partially reflective surface, and a nonstandard artificial magnetic conductor acting as a reflective ground plane. Its profile can be reduced to a quarter of a wavelength. Furthermore, an array antenna of 2×2 arrangement using CP-FPRA as element with a compact sequential rotation feeding scheme is also proposed and fabricated to enhance the gain and to improve the axial ratio (AR) bandwidth. The array was optimized to minimize grating lobes and reduce the sidelobe level, even though the element spacing was about two wavelengths. Reasonable agreement between the simulated and measured results is observed. The measured common bandwidth of |S₁₁| ≤-10 dB, gain-drop ≤3 dB, and AR ≤3 dB is about 7.4%.

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