Title :
Analysis and design of a novel microwave active filter
Author :
Moazzam, M.R. ; Aghvami, A.H.
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll. London, UK
Abstract :
The theory and design of a novel microwave active bandpass filter structure using a combination of microstrip line resonators and FETs are described. The resulting filter not only compensates for losses but also produces positive gain. It has superior performance regarding harmonic bands compared with an end-coupled filter structure using the same number of resonators. A 350-MHz bandwidth bandpass filter in the S-band region was designed and fabricated to verify the described technique and to investigate the effects of parasitic and feedback elements of the active devices on the filter performance. The measured results are in good agreement with the predicted results.<>
Keywords :
active filters; band-pass filters; field effect transistor circuits; microwave filters; resonators; strip line components; 350 MHz; FET; S-band; bandpass filter; bandwidth; feedback elements; filter performance; harmonic bands; measured results; microstrip line resonators; microwave active filter; parasitic elements; Active filters; Band pass filters; Bandwidth; FETs; Microstrip filters; Microstrip resonators; Microwave filters; Microwave theory and techniques; Power harmonic filters; Resonator filters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174814
