Title :
Alternative architectures for narrowband varactor-tuned bandpass filters
Author :
Guyette, Andrew C.
Author_Institution :
Microwave Technol. Branch, Naval Res. Lab., Washington, DC, USA
Abstract :
A unique design approach for narrowband tunable bandpass filters is presented which focuses on engineering the tuned center-frequency dependence of the coupling coefficient between adjacent resonators. New architectures are presented, and equations for the coupling coefficient are derived from energy expressions. A microstrip prototype with independently-tunable center frequency and bandwidth was built and tested, and exhibits excellent performance.
Keywords :
band-pass filters; circuit tuning; microstrip resonators; microwave diodes; microwave filters; varactors; coupling coefficient; microstrip prototype; narrowband varactor-tuned bandpass filter; resonators; stored energy calculation; tunable bandwidth; tunable center frequency; Band pass filters; Bandwidth; Design engineering; Equations; Frequency; Microstrip; Narrowband; Power engineering and energy; Prototypes; Testing;
Conference_Titel :
Microwave Integrated Circuits Conference, 2009. EuMIC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4749-7
