Title :
Multi-bandpass filters using external resonators
Author :
Sun, C.M. ; Fu, W.Y. ; Dong, Y.L.
Author_Institution :
Dept. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The increasing demand of wireless communication applications necessitates radio frequency (RF) transceivers operating in multiple separated frequency bands such that users can access various services with a single multimode handset. In this letter, a novel compact structure is proposed that dual bandpass filter and multi-bandpass filter with adjustable second passband can be obtained by using external resonators. By properly adjusting the multi-reject bands, appropriate multi transmission bands are created. The designed filters have compact size and good stopband performance.
Keywords :
band-pass filters; radio transceivers; resonators; adjustable second passband; dual bandpass filter; external resonators; multi bandpass filters; radio frequency transceivers; wireless communication applications; Band pass filters; Dual band; Filtering theory; Microwave filters; Resonant frequency; Resonator filters; Scattering parameters; bandpass filter; dual-band; external resonator; multi-band;
Conference_Titel :
Electronics, Communications and Control (ICECC), 2011 International Conference on
Conference_Location :
Zhejiang
Print_ISBN :
978-1-4577-0320-1
DOI :
10.1109/ICECC.2011.6067837
