Title :
Broadband electronically tunable microstrip ring resonator filter with negative resistance coupling
Author :
Kumar, S. ; Klymyshyn, D. ; Mohammadi, A.
Author_Institution :
Telecommun. Res. Lab., Saskatoon, Sask., Canada
fDate :
4/25/1996 12:00:00 AM
Abstract :
Broadband electronically tunable filters can be realised using varactor tuned ring resonators with negative resistance coupling. Broadband matching circuits must be used for negative resistance realisation and for compensating the input and output impedance variation with frequency. Circuits and simulated results for a two section 1.3 to 2.1 GHz silicon varactor tuned 50 to 70 MHz bandwidth ring resonator filter are presented
Keywords :
UHF filters; circuit tuning; impedance matching; microstrip filters; microstrip resonators; negative resistance devices; resonator filters; varactors; 1.3 to 2.1 GHz; 50 to 70 MHz; broadband matching circuits; electronically tunable resonator filter; impedance variation; microstrip ring resonator filter; negative resistance coupling; varactor tuned ring resonators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960554
