Ultra-wideband (UWB) bandpass filters using multiple-mode resonator
Ultra-wideband (UWB) bandpass filters using multiple-mode resonator
复制标题
DOI：
10.1109/lmwc.2005.859011
复制
发表时间：
2005-11-01
影响因子：
3
通讯作者：
Menzel, W
中科院分区：
文献类型：
--
作者：
Zhu, L;Sun, S;Menzel, W
提出并实现了一种基于多模谐振器（MMR）的微带线超宽带（UWB）带通滤波器，该滤波器能够在3.1- 10.6GHz的整个UWB通带内传输信号。在设计中，该MMR的前三个谐振频率被适当地调整以准相等地放置在UWB内。然后，在两侧的平行耦合线纵向拉伸，以提高频率色散耦合度与耦合峰值附近的超宽带的中心。优化后的滤波器，一个良好的UWB带通特性与五个传输极点的理论实现和实验证实。在整个超宽带通带内，回波损耗大于10 dB，群时延变化小于0.23ns。
A novel microstrip-line ultra-wideband (UWB) bandpass filter is proposed and implemented using a multiple-mode resonator (MMR), aiming at transmitting the signals in the whole UWB passband of 3.1-10.6 GHz. In the design, the first three resonant frequencies of this MMR are properly adjusted to be placed quasiequally within the UWB. Then, the parallel-coupled lines at the two sides are longitudinally stretched so as to raise the frequency-dispersive coupling degree with the coupling peak near the center of the UWB. After optimization of this filter, a good UWB bandpass behavior with five transmission poles is theoretically realized and experimentally confirmed. Within the whole UWB passband, the return loss is found higher than 10 dB, and the group delay variation is less than 0.23 ns.