Title :
Wideband RCS Reduction of a Microstrip Antenna Using Artificial Magnetic Conductor Structures
Author :
Yuejun Zheng ; Jun Gao ; Xiangyu Cao ; Zidong Yuan ; Huanhuan Yang
Author_Institution :
Inf. & Navig. Coll., Air Force Eng. Univ. of CPLA, Shannxi, China
Abstract :
A design approach aimed at reducing the radar cross section (RCS) of microstrip antenna in wide frequency band is proposed. First, two different artificial magnetic conductor (AMC) unit cells are designed to obtain 180 ° ( ±30°) reflection phase difference over broadband frequency range. Then, chessboard configuration is structured with the two AMC unit cells and is applied to a microstrip antenna for RCS reduction. The simulated results indicate that the proposed antenna possesses remarkable RCS reduction from 8.0 GHz to 20.0 GHz for both polarizations, covering the working band of the original antenna. The maximum reduction is 31.9 dB. Moreover, the radiation performance of the antenna has been well kept. Measured results of the fabricated prototype are in good agreement with the simulations.
Keywords :
antenna radiation patterns; broadband antennas; electromagnetic wave polarisation; microstrip antennas; radar antennas; radar cross-sections; AMC; antenna radiation performance; artificial magnetic conductor structure; frequency 8 GHz to 20 GHz; microstrip antenna wideband RCS reduction; radar cross section; reflection phase difference; Antenna measurements; Bandwidth; Broadband antennas; Microstrip antennas; Reflection; Artificial magnetic conductor (AMC); microstrip antenna; radar cross section (RCS) reduction; wideband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2413456
