Title :
Super broad band based on adaptive frequency selective surface for SAR
Author :
Zhang, Chenggang ; Zhang, Qiang
Author_Institution :
Nat. Key Lab. of Antenna & Microwave Technol., Nanjing Res. Inst. of Electron. Technol., Nanjing, China
Abstract :
Adaptive frequency selective surface(FSS) is a valuable technique for increasing the bandwidth of airborne radome. It can satisfy the rigorous bandwidth requirement of synthetic aperture radar (SAR). Adaptive FSS with cross slot units has been investigated in this paper. Cross slot FSS acts like bandpass filter. It can be used in antenna radomes. Lumped-element devices are loaded on the periodic units. Resonant frequency of the FSS depending on the lumped-element´ impedance could shift in a specified frequency band. The bandwidth of the adaptive FSS with reflection loss below -20 dB can get to 10 GHz.
Keywords :
broadband antennas; frequency selective surfaces; radomes; synthetic aperture radar; FSS; SAR; adaptive frequency selective surface; airborne radome; antenna radomes; bandpass filter; frequency 10 GHz; lumped- element devices; synthetic aperture radar; Band pass filters; Bandwidth; Frequency selective surfaces; Impedance; Laboratories; Microwave technology; Periodic structures; Reflection; Resonant frequency; Synthetic aperture radar; adaptive; cross slot; frequency selective surface (FSS); lumped-element; synthetic aperture radar (SAR);
Conference_Titel :
Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on
Conference_Location :
Xian, Shanxi
Print_ISBN :
978-1-4244-2731-4
Electronic_ISBN :
978-1-4244-2732-1
DOI :
10.1109/APSAR.2009.5374093
