Title :
Novel design possibilities for dual-mode filters without intracavity couplings
Author :
Rosenberg, Uwe ; Amari, Smain
Author_Institution :
Dept. of Electr. & Comput. Eng., R. Mil. Coll. of Canada, Kingston, Ont., Canada
Abstract :
This letter presents coupling schemes and design guidelines for dual-mode filters without intracavity couplings. Examples of filters of orders two and four are presented to document the flexibility of these solutions. These coupling schemes allow the change of transmission zeros from either side of the passband to the other by only detuning the resonators and without changing the coupling coefficients.
Keywords :
band-pass filters; cavity resonator filters; coupled circuits; electromagnetic coupling; elliptic filters; poles and zeros; bandpass filters; coupling schemes; design guidelines; dual-mode filters; elliptic filters; finite transmission zeros; four-resonator filter; multimode filters; resonator detuning; resonator filters; rigorous numerical techniques; two-resonator filter; Artificial satellites; Couplings; Filtering theory; Frequency synthesizers; Guidelines; Mobile communication; Passband; Resonator filters; Topology;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.802028
