High Selectivity Wideband Bandpass Filter Based on Transversal Signal-Interaction Concepts and T-Shaped Structure

Author

Feng, Wenjie ; Che, Wenquan ; Shi, Suyang ; Xue, Quan

Author_Institution

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

Volume

22

Issue

11

fYear

2012

Firstpage

562

Lastpage

564

Abstract

A high selectivity wideband bandpass filter (BPF) based on transversal signal-interaction concepts and T-shaped structure is proposed in this letter. Two transmission paths with two open coupled lines and a T-shaped structure are used to realize signal transmission from Port 1 to Port 2. A three-order passband with two transmission zeros can be achieved in the proposed filter. One prototype with 3-dB fractional bandwidth of 36.3% (3.3-4.75 GHz) is fabricated for demonstration. Good agreement is observed between simulated and measured performances.

Keywords

band-pass filters; coupled transmission lines; transversal filters; BPF; T-shaped structure; bandwidth 3.3 GHz to 4.75 GHz; open coupled line; passband filter; signal transmission; transmission path; transversal signal interaction concept; wideband bandpass filter; Band pass filters; Filtering theory; Impedance; Passband; Wideband; Wireless communication; Bandpass filter (BPF); T-shaped structure; transmission zero; transversal filter concepts;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2224651

Filename

6340359