Development of Ultra-Wideband (UWB) Bandpass Filters forHigh Speed Wireless Communication Systems

本文研究了采用微带多模谐振器、短桩负载谐振器、环形谐振器和并行耦合传输线谐振器的超宽带（UWB）带通滤波器的合成理论和设计方法。设计、制造和测量了许多紧凑的低损耗超宽带bpf。该滤波器具有宽通带、窄裙带、宽阻带、衰减大等特点，能很好地满足美国联邦通信委员会或日本政府发布的UWB频谱掩模要求。

In this study, the synthesis theory and design method of ultra-wideband (UWB) bandpass filters (BPFs) using microstrip multi-mode resonators, stub-loaded resonators, ring resonators, and parallel-coupled transmission line resonators are developed. A number of compact and low-loss UWB BPFs are designed, fabricated, and measured. These filters show wide passband, sharp skirt property, wide stopband with large attenuations, and meet well the UWB spectrum mask issued by the Federal Communications Commission of USA or by the Japanese government.