Novel ultra-wide bandpass filter with notched band using multimode resonator and open stubs

Author

Fang Xu ; Zongjie Wang ; Kaiyi Ye ; Ju Mu

Author_Institution

Sch. of Electron. & Inf. Eng., Tianjin Univ., Tianjin, China

fYear

2013

fDate

5-8 Nov. 2013

Firstpage

890

Lastpage

892

Abstract

In this letter, a novel ultra-wideband bandpass filter with notched band is proposed. This filter is based on multi-mode resonator (MMR) and coupled with the special feed-line structure. The main structure creates the UWB passband from 3.9GHz to 11.1GHz. The notched band was generated around 9GHz by connecting the open-stubs in the original structure. Moreover, the theoretical analysis of the main resonator is given, briefly. The measured results show the feasibility of the filter with the insertion loss lower than 2dB and the average group delay less than 0.4ns. Compared to other UWB filter with notched band, the size of filter is 50% smaller and fabricated in just a single layer of the substrate.

Keywords

band-pass filters; microwave circuits; microwave filters; notch filters; resonator filters; ultra wideband technology; MMR filter; average group delay; feedline structure; frequency 3.9 GHz to 11.1 GHz; insertion loss; multimode resonator filter; notched band filter; open stub filter; ultrawide bandpass filter; Band-pass filters; Delays; Filtering theory; Microstrip filters; Microwave filters; Passband; Resonator filters; Microstrip filter; UWB filter; coupling theory; notched band;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2013 Asia-Pacific

Conference_Location

Seoul

Type

conf

DOI

10.1109/APMC.2013.6695021

Filename

6695021