Title :
Compact dual-band bandpass filter with good frequency selectivity
Author :
Lee, Jeyull ; Lim, Young-Cheol
Author_Institution :
Dept. of Electron. & Comput. Eng., Chonnam Nat. Univ., Gwangju, South Korea
Abstract :
A compact microstrip dual-band bandpass filter with controllable bandwidth for each passband and good frequency selectivity is proposed. The proposed dual-band bandpass filter has five transmission zeros. The transmission zeros are generated by each dual-mode resonator and input/output port cross-coupling. The dual-band bandpass filter application is designed for 2.4/5.2 GHz WLAN. Experimental measurements are presented to validate the theory.
Keywords :
band-pass filters; wireless LAN; WLAN; compact microstrip dual-band bandpass filter; controllable bandwidth; dual-mode resonator; frequency 2.4 GHz to 5.2 GHz; frequency selectivity; input-output port cross-coupling; transmission zeros;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.2702
