dA compact dual-band tunable filter adopting cross coupling structure
- Resource Type
- Conference
- Authors
- Zhang, Zhonghai; Fang, Zhihua; Wu, Aiting; Guan, Boran
- Source
- 2016 11th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Antennas, Propagation and EM Theory (ISAPE), 2016 11th International Symposium on. :908-910 Oct, 2016
- Subject
- Communication, Networking and Broadcast Technologies
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Signal Processing and Analysis
Band-pass filters
Resonator filters
Couplings
Dual band
Microwave filters
Filtering theory
Capacitors
dual band
cross type
tunable filter
- Language
A compact dual-band tunable bandpass filter operating in the range of 330MHz to 400MHz was proposed in this letter. The dual-band tunable bandpass filter was consisted of four rectangular ring tunable resonators and a cross type coupling structure. The cross type coupling structure also played the roles of a resonator. The desired performance of a dual-band tunable filter can be designed easily using the cross type coupling structure. The performance of the two passband can be adjusted dependently and has little influence to each other. The size of this tunable filter was less than 0.16λ∗0.14λ normalized to 400MHz.