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.

中文翻译：

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一种减少 UWB 带槽天线时域振铃的系统方法

开发了各种超宽带 (UWB) 带陷波天线，以避免 UWB 与位于 UWB 频谱内的其他附近窄频带之间的干扰。然而，所有开发的带陷波 UWB 天线都会在时域中产生振铃，并且在发射（或接收）UWB 脉冲中存在大量失真。失真水平取决于带陷强度和带宽，它会严重降低基于短脉冲的 UWB 系统的性能。这封信研究了 UWB 带陷波天线中的时域振铃效应，并提出了一种减少它的解决方案。所提出的技术通过模拟得到验证并使用测量进行验证。所提出的技术将在脉冲超宽带雷达中具有关键重要性。