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RCS Reduction of Patch Array Antenna by Electromagnetic Band-Gap Structure

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4 Author(s)
Jiejun Zhang ; Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing, China ; Junhong Wang ; Meie Chen ; Zhan Zhang

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.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:11 )