Title :
Design of dual-band bandpass filters using stepped-impedance resonators
Author_Institution :
Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Gueishan, Taiwan
Abstract :
In this paper, a new coupling configuration of the stepped impedance resonator (SIR) has been presented to design dual-band bandpass filters with the small circuit size. We design the filter with higher selectivity based on SIR directing-coupling, cross-coupling, input and output external quality factors. Through resonance characteristics of a SIR, the second resonant frequency can be tuned by adjusting structure parameters. The agreement between measured results and full-wave simulation prediction validates the feasible configuration of the proposed filters.
Keywords :
Q-factor; band-pass filters; resonator filters; coupling configuration; cross-coupling; directing-coupling; dual-band bandpass filters; full-wave simulation prediction; input external quality factors; output external quality factors; second resonant frequency; stepped-impedance resonators; structure parameters; Couplings; Frequency measurement; Resonant frequency; cross-coupling; directing-coupling; external quality; stepped impedance resonator;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6037012
