ABSTRACT This paper presents a novel compact ultra-wideband (UWB) bandpass filter (BPF). It consists of two composite right/left-handed transmission line (CRLH-TL) unit cells and an anti-coupled line structure. The CRLH-TL unit exhibits good passband performance with a compact size. By cascading the anti-coupled line structure, a wide upper stopband is obtained. The measured fractional bandwidth and insertion loss are 113.9% and 0.52 dB, respectively. Moreover, a broad stopband from 14 to 30 GHz with a high rejection level of 20 dB is obtained. The whole size is 14.4 mm × 10.2 mm. The simulated and measured results agree well.

中文翻译：

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基于复合左手/右手传输线的紧凑型超宽带带通滤波器，具有改进的带外性能

摘要 本文提出了一种新颖的紧凑型超宽带 (UWB) 带通滤波器 (BPF)。它由两个复合左手/右手传输线（CRLH-TL）单元和反耦合线结构组成。CRLH-TL 单元具有良好的通带性能和紧凑的尺寸。通过级联反耦合线结构，获得较宽的上阻带。测得的部分带宽和插入损耗分别为 113.9% 和 0.52 dB。此外，还获得了 14 至 30 GHz 的宽阻带，具有 20 dB 的高抑制水平。整体尺寸为 14.4 mm × 10.2 mm。模拟和测量的结果吻合得很好。