Title :
Compact microstrip coupled-line bandpass filter with two cross-couplings for creating multiple transmission zeros
Author :
Wu, Chao-Huang ; Lin, Yo-Shen ; Wang, Chi-Hsueh ; Chen, Chun Hsiung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A compact coupled-line bandpass filter with two capacitively cross-coupled paths to create multiple transmission zeros is proposed. The locations of transmission zeros can be adjusted by varying the values of cross-coupled capacitances so as to improve the filter selectivity. Specifically, a 4th-order microstrip coupled-line bandpass filter centered at 4.9 GHz with a 3-dB bandwidth of 6% and six transmission zeros is implemented and examined.
Keywords :
band-pass filters; coupled circuits; microstrip filters; poles and zeros; 4.9 GHz; compact microstrip coupled-line bandpass filter; cross-couplings; filter selectivity; multiple transmission zeros; Band pass filters; Capacitance; Capacitors; Coupling circuits; Distributed parameter circuits; Filtering theory; Inverters; Microstrip filters; Microwave filters; Resonator filters;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610165
