Compact DSPSL ultra-wideband bandpass filter based on transversal signal-interaction concepts

Author

Wenjie Feng ; Wenquan Che ; Quan Xue

Author_Institution

Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China

fYear

2013

fDate

14-18 April 2013

Firstpage

1

Lastpage

4

Abstract

A compact ultra-wideband (UWB) bandpass filter (BPF) based on transversal signal-interaction concepts is proposed in this letter. Two transmission paths with a wideband double-sided parallel-strip line (DSPSL) 180° swap and a 3λ/4 transmission line are used to transmit signal from Port 1 to Port 2. Two λ/4 shorted lines are introduced to improve the passband transmission characteristic. Two transmission zeros and good harmonic suppression can be achieved in the whole band. One prototype with 3-dB fractional bandwidth of 108% (1.35-4.6 GHz) is fabricated for demonstration, and good agreement is observed between simulated and measured performances.

Keywords

band-pass filters; poles and zeros; strip lines; ultra wideband technology; compact DSPSL ultra-wideband bandpass filter; compact ultra-wideband bandpass filter; frequency 1.35 GHz to 4.6 GHz; harmonic suppression; passband transmission characteristic; transmission line; transmission zeros; transversal signal-interaction concepts; wideband double-sided parallel-strip line; Band-pass filters; Filtering theory; Microwave filters; Passband; Resonator filters; Transversal filters; Ultra wideband technology; 180° swap; Ultra-wideband (UWB); bandpass filter (BPF); double-sided parallel-strip line (DSPSL); transversal filter concepts;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2013 IEEE International

Conference_Location

Beijing

Type

conf

DOI

10.1109/IEEE-IWS.2013.6616694

Filename

6616694