Title :
RCS Reduction of Ridged Waveguide Slot Antenna Array Using EBG Radar Absorbing Material
Author :
Li, You-Quan ; Zhang, Hui ; Fu, Yun-Qi ; Yuan, Nai-Chang
Author_Institution :
Coll. of Electron. Sci. & Eng., Univ. of Defense Technol., Changsha
fDate :
6/30/1905 12:00:00 AM
Abstract :
This letter investigates the application of EBG radar absorbing material (RAM) to asymmetric ridged waveguide slot antenna array to reduce its backward RCS. The EBG RAM is based on the mushroom-like EBG structure loaded with lumped resistances. A ridged waveguide slot antenna array with 4 times 10 slot elements was designed and built, part of the metal ground plane of the array is replaced with this EBG RAM. The measured results show that performance of the antenna array is preserved when EBG RAM is used. At working frequency the backward RCS of antenna array with EBG RAM has dramatically reduced than that of the common antenna array.
Keywords :
photonic band gap; radar absorbing materials; radar antennas; radar cross-sections; ridge waveguides; slot antenna arrays; EBG radar absorbing material; RCS reduction; asymmetric ridged waveguide slot antenna array; lumped resistance; mushroom-like EBG structure; radar cross-section; Electromagnetic band-gap (EBG); RAM; radar cross section (RCS); ridged waveguide slot antenna array;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2008.2001548
