Sensor and Simulation Notes Note 506 January 2006 A Frequency Selective Surface Used as a Broadband Filter to Pass Low-Frequency UWB while Reflecting X–Band Radar
نویسندگان
چکیده
Airborne ultra wideband (UWB) impulse-radiating antennas (IRAs) present an especially large radar cross section to X–band radar. To mitigate this problem, we have numerically and experimentally investigated the use of a frequency selective surface (FSS) as a broadband filter to reflect X–band radar while transmitting lower-frequency UWB signals without loss or dispersion. We present here results of numerical simulations and experimental measurements demonstrating an FSS that reflects essentially all of an X–band signal, but is transparent to UWB frequencies below 2.5 GHz.
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