Triple-mode dual-band bandpass filter on microstrip-to-CPW structure
- Resource Type
- Conference
- Authors
- Huang, Xiaoguo; Feng, Quanyuan; Zhu, Lei; Xiang, Qianyin; Jia, Dinghong
- Source
- 2014 IEEE International Wireless Symposium (IWS 2014) Wireless Symposium (IWS), 2014 IEEE International. :1-4 Mar, 2014
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Band-pass filters
Filtering theory
Passband
Resonator filters
Dual band
Microstrip filters
Coplanar waveguides
Dual-band filter
triple-mode resonator
coplanar waveguide
transmission zero
even- and odd-mode
- Language
A high-selectivity dual-band bandpass filter using a modified triple-mode resonator with two paralleled stubs is proposed. By adding a coplanar waveguide (CPW) structure into a microstrip dual-mode stepped-impedance resonator (SIR), the triple-mode resonator is achieved without significantly increasing the overall circuit size. Five transmission zeros are generated in the desired band so as to improve the filtering selectivity. Simulated and measured results show that the designed filter achieves good performance in terms of compact size and high selectivity.