Ultra-wideband (UWB) bandpass filter with three transmission zeros in the notched band

Author

Sai Wai Wong ; Weiwei Liao ; Kai Wang ; Qing-Xin Chu

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China

fYear

2013

fDate

14-18 April 2013

Firstpage

1

Lastpage

4

Abstract

A compact ultra-wideband (UWB) bandpass filter (BPF) with three transmission zeros in the notched-band is presented in this paper. A dual coupled microstrip/coplanar waveguide (CPW) structure with slotlines on the bottom are used. The notched-band is generated by a pair of small U-shaped slot-line on the bottom layer and a hollow microstrip resonator on the top layer, and three transmission zeros are achieved at frequency 5.85GHz, 5.9GHz, 5.95GHz without extra circuit size. The UWB bandpass filter (BPF) has been designed, fabricated and measured. The measured results agree with the simulated result closely.

Keywords

band-pass filters; coplanar waveguides; coupled circuits; microstrip lines; microstrip resonators; microwave circuits; microwave resonators; network synthesis; notch filters; poles and zeros; slot lines; ultra wideband technology; CPW; U-shaped slot-line; UWB BPF; compact ultrawideband bandpass filter; dual coupled microstrip-coplanar waveguide structure; frequency 5.85 GHz; frequency 5.9 GHz; frequency 5.95 GHz; hollow microstrip resonator; notched-band generation; transmission zero; Band-pass filters; Coplanar waveguides; Filtering theory; Microstrip filters; Microwave filters; Passband; Ultra wideband technology; Ultra-wideband; bandpass filters (BPFs); coplanar waveguide (CPW); notched filter; slot-line;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2013 IEEE International

Conference_Location

Beijing

Type

conf

DOI

10.1109/IEEE-IWS.2013.6616758

Filename

6616758