Wide Stopband Bandpass Filter Implemented With Spur Stepped Impedance Resonator and Substrate Integrated Coaxial Line Technology

Author

Peng Chu ; Wei Hong ; Linlin Dai ; Hongjun Tang ; Zhangcheng Hao ; Jixin Chen ; Ke Wu

Author_Institution

State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China

Volume

24

Issue

4

fYear

2014

fDate

Apr-14

Firstpage

218

Lastpage

220

Abstract

A novel wide stopband bandpass filter implemented with spur stepped impedance resonator (SSIR) and substrate integrated coaxial line (SICL) technology is proposed in this letter. SSIR possesses capabilities of both suppressing and staggering spurs without complicated fine-tuning, and SICL is very suitable for wide stopband applications. A prototype with compact size is fabricated, and the measured results exhibit extended stopband up to 8.76 f₀ with a rejection better than 40 dB (except for a little 36.5 dB burr in 7.06 f₀), or 9.36 f₀ with rejection better than 30 dB.

Keywords

band-pass filters; band-stop filters; coaxial cables; resonator filters; SICL technology; SSIR; spur stepped impedance resonator; spur suppression; substrate integrated coaxial line technology; wide stopband bandpass filter; Filtering theory; Harmonic analysis; Impedance; Integrated circuit modeling; Prototypes; Resonant frequency; Substrates; Bandpass filter (BPF); spur stepped impedance resonator (SSIR); substrate integrated coaxial line (SICL); wide stopband;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2295219

Filename

6712910