Title :
RCS Reduction of Patch Array Antenna by Electromagnetic Band-Gap Structure
Author :
Zhang, Jiejun ; Wang, Junhong ; Chen, Meie ; Zhang, Zhan
Author_Institution :
Key Lab. of All Opt. Network & Adv. Telecommun. Network of Minist. of Educ., Beijing Jiaotong Univ., Beijing, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
In this letter, electromagnetic band-gap (EBG) structure is used to reduce the radar cross section (RCS) of the patch array antenna. The proposition of this method is based on the high impedance characteristic of the mushroom-like EBG structure. The basic patch array antenna is designed with a central frequency of 5.0 GHz while replacing the substrate of the array with the mushroom-like EBG structure. The frequency band in which RCS of the patch array antenna reduced significantly can be adjusted by parameters of the EBG. The backward RCS of the patch array antenna with EBG can be reduced as much as 10 dB compared to that of the conventional array antenna, and the degradation of the antenna performance is not significant.
Keywords :
electric impedance; microstrip antenna arrays; photonic band gap; radar antennas; radar cross-sections; RCS reduction; backward RCS; electromagnetic band-gap structure; frequency 5 GHz; impedance characteristic; mushroom-like EBG structure; patch array antenna; radar cross section; substrate; Antenna arrays; Arrays; Metamaterials; Photonic band gap; Artificial magnetic conductor (AMC); electromagnetic band-gap (EBG); patch array antenna; radar cross section (RCS);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2215832
