Title :
High power mixed-cavity bandpass filter
Author :
Shao-fei Cheng ; Bao-fu Jia ; Zhao-jun Zhu
Author_Institution :
Inst. of Apppplied Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A novel structure of coaxial cavity filter is proposed, which is characterized by using mixed-cavities, improved performance, and good tunability. Mixed-cavities mean that the geometry shape of the cavities is different or the type of the resonators is different. In this paper, a high power bandpass filter with two transmission zeros based this new structure with different geometry shapes has been designed. The filter with passband from 1238MHz to 1306MHz exhibits a very sharp cutoff frequency, and rejection is better than 50dB from 1330MHz to 5500MHz. The characteristics of harmonic suppression and power handing capabilities are better than conventional filter.
Keywords :
UHF filters; band-pass filters; cavity resonators; harmonics suppression; microwave filters; poles and zeros; resonator filters; UHF filters; coaxial cavity filter; frequency 1238 MHz to 1306 MHz; frequency 1330 GHz to 5500 GHz; harmonic suppression; high power mixed-cavity bandpass filter; microwave filters; power handing capability; transmission zeros; Band-pass filters; Cavity resonators; Couplings; Filtering theory; Microwave filters; Power harmonic filters; Resonator filters;
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2013 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3050-0
DOI :
10.1109/ICCCAS.2013.6765250
