Title :
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
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;
Conference_Titel :
Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2013 International Workshop on
Conference_Location :
Chengdu
DOI :
10.1109/MMWCST.2013.6814621
