Title :
Application of generalized Bagley-polygon four-port power dividers to designing microwave dual-band bandpass planar filters
Author :
Gómez-García, Roberto ; Sánchez-Renedo, Manuel
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. of Alcala, Madrid, Spain
Abstract :
A new type of microwave dual-band bandpass planar filter based on signal-interference techniques is reported. The described filter approach consists of transversal filtering sections made up of generalized Bagley-polygon four-port power dividers. This transversal section, by exploiting feedforward signal-interaction concepts, enables dual-band bandpass filtering transfer functions with several transmission zeros to be obtained. A set of closed formulas and guidelines for the analytical synthesis of the dual-passband transversal filtering section are derived. Moreover, its practical usefulness is proven with the development and testing of a 2.75/3.25-GHz dual-band microstrip prototype.
Keywords :
band-pass filters; microstrip filters; microwave filters; power dividers; dual-band microstrip prototype; feedforward signal-interaction concepts; filtering transfer functions; frequency 2.75 GHz; frequency 3.25 GHz; generalized Bagley-polygon four-port power dividers; microwave dual-band bandpass planar filters; signal-interference techniques; transmission zeros; transversal filtering sections; Band pass filters; Dual band; Filtering theory; Guidelines; Microwave filters; Microwave theory and techniques; Power dividers; Signal synthesis; Transfer functions; Transversal filters; Bagley-polygon power divider; bandpass filter; dual-band filter; microstrip; microwave filter; planar filter; signal interference; transmission zero; transversal filter;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5517849
