Rectangular waveguide band-pass filter with harmonic suppression

Author

Yucui Li ; Qingyuan Wang ; Congling Wang

Author_Institution

Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2013

fDate

24-25 Oct. 2013

Firstpage

251

Lastpage

253

Abstract

An improved structure of rectangular waveguide band-pass filter with harmonic suppression is proposed. The filter consists of cascade resonant cavities with coupling provided by irises. By means of varying the width of each resonator and the offsets between the adjacent resonant cavities, the stop-band was successfully pushed to a two octaves frequency range. The results show that the designed rectangular waveguide band-pass filter has a pass-band of 27.5 GHz - 30 GHz and stop-band suppression of greater than 33 dB over the frequency range from 35 GHz to 60 GHz, its pass-band insertion loss is less than 0.1 dB, return loss is more than 19 dB. The filter can be used in modern communication systems with the requirement of harmonic suppression.

Keywords

band-pass filters; cavity resonator filters; harmonics suppression; microwave filters; millimetre wave filters; rectangular waveguides; adjacent resonant cavities; cascade resonant cavities; frequency 27.5 GHz; frequency 35 GHz to 60 GHz; harmonic suppression; irises; pass-band insertion loss; rectangular waveguide bandpass filter; stop-band suppression; two octaves frequency range; Cavity resonators; Couplings; Educational institutions; Indexes; Patents; Rectangular waveguides; Resonator filters; band-pass filter; communication systems; harmonic suppression; rectangular waveguide;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2013 International Workshop on

Conference_Location

Chengdu

Type

conf

DOI

10.1109/MMWCST.2013.6814621

Filename

6814621