期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 19, 期 3, 页码 482-486出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2020.2972025
关键词
Impulse ultrawideband (UWB) radar; time-domain ringing (TDR); UWB band-notched antennas; UWB pulses
Various ultrawideband (UWB) band-notched antennas are developed to avoid interference between UWB and other nearby narrow frequency bands that falls within the UWB spectrum. However, all band-notched UWB antennas developed generate ringing in the time domain, and a great amount of distortion is present in transmitted (or received) UWB pulses. The distortion level is dependent on band-notching strength and bandwidth, and it highly degrades the performance of the UWB system that is based on short pulses. This letter investigates time-domain ringing effect in UWB band-notched antennas and proposes a solution for its reduction. The proposed technique is verified through simulation and validated using measurements. The proposed technique will have key importance in impulse UWB radars.
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