Gain Enhanced Circularly Polarized Antenna With RCS Reduction Based on Metasurface | Zendy

Zhaosong Liu | Zendy; Ying Liu | Zendy; Shuxi Gong | Zendy

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Gain Enhanced Circularly Polarized Antenna With RCS Reduction Based on Metasurface

Author(s) -

Zhaosong Liu,

Ying Liu,

Shuxi Gong

Publication year - 2018

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.2018.2865533

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

In this paper, a gain-enhanced circularly polarized (CP) patch antenna with in-band and out-of-band radar cross section (RCS) reduction is designed, fabricated, and analyzed. Both the proposed and reference CP patch antennas are etched with truncated corners and designed to operate at 8.2 GHz, while the proposed antenna is surrounded by chessboard arrangement of an ultra-wideband and high-efficiency polarizer that can rotate linearly polarized incident waves into the orthogonal one ranging from 7.55 to 20.74 GHz. Meanwhile, the polarization conversion ratio remains higher than 0.9 within the operating band. The simulation results show that the realized gain of the proposed antenna is enhanced by 2.5 dB at 8.2 GHz, and 11 dB average RCS reduction is achieved within the operating band (7.55-20.74 GHz). The working mechanism of the simultaneous realization of gain enhancement and RCS reduction is analyzed in detail. Finally, the designed and reference antennas are fabricated and tested, which demonstrates the effectiveness of the proposed design method. The proposed antenna can be potentially applied in a future communication device and stealth platform.

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