A novel compact microstrip dual-mode resonator and filter are proposed. The characteristics of the dual mode resonator are investigated. It is found that the filter response exhibits a desirable stopband response where the first spurious passband naturally occurs at 3f0. Finally, methods of miniaturizing such resonators and filters are discussed. The proposed structure was able to achieve 60% size reduction.
Published in:
Microwave and Wireless Components Letters, IEEE
(Volume:19
,
Issue:
11
)
Date of Publication: Nov. 2009