A novel wideband bandpass filter using a cross-shaped multiple-mode resonator

作者：Ren M H^*; Chen D; Cheng C H

来源：IEEE Microwave and Wireless Components Letters, 2008, 18(1): 13-15.

DOI：10.1109/LMWC.2007.911973

• bandpass filter (BPF)
• cross-shaped resonator
• multiple-mode resonator (MMR)

A novel wideband bandpass filter (BPF) using a cross-shaped microstrip multiple-mode resonator (MMR) is presented in the letter. The MMR is composed of a section of open-ended microstrip-line and a pair of short-ended stubs. Its three resonant modes are used to construct the passband of the proposed BPF. And two coplanar waveguides are used as. the input/output transmission-lines to improve the coupling between the MMR and input/output transmission-lines. The filter has been investigated numerically and experimentally. Both simulated and measured results show that the filter has a good performance, including controllable bandwidth from 66% to 114%, low insertion loss (lower than, 0.78 dB), and a small group delay variation.

• 出版日期2008-1
• 单位南京邮电大学