An improved bandpass filter using CMRC for ultra-wideband application

Author

Li, Zhong ; Long, Yun-Fu ; Meng, Yan-Bin ; Qin, Tian

Author_Institution

Dept. of Anti-air Missile, Air Defence Forces Command Coll., Zhengzhou, China

fYear

2011

fDate

21-23 Oct. 2011

Firstpage

373

Lastpage

374

Abstract

An improved ultra-wideband (UWB) microstrip filter with good out-of-band performance is designed and demonstrated. The filter is designed with two multiple-mode resonators (MMR), which are coupled together via a parallel-coupled line. A novel rectangular slit compact microstrip resonant cell (CMRC) is applied to improve the filter performance, which is formed by etching in the central section of the MMR. Combining the CMRC lowpass filter and slow wave characteristic, the improved filter has better out-of-band attenuation characteristic and sharpened rejection skirts outside the UWB passband, and its size is reduced. Good agreement between experimental and simulated results is achieved.

Keywords

band-pass filters; low-pass filters; microstrip filters; resonator filters; UWB microstrip filter; bandpass filter; lowpass filter; multiple-mode resonators; out-of-band attenuation characteristic; parallel-coupled line; rectangular slit compact microstrip resonant cell; rejection skirts; slow wave characteristic; ultrawideband application; Band pass filters; Delay; Microstrip filters; Microwave filters; Passband; Resonator filters; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Problem-Solving (ICCP), 2011 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4577-0602-8

Electronic_ISBN

978-1-4577-0601-1

Type

conf

DOI

10.1109/ICCPS.2011.6092233

Filename

6092233