Planar filter design with fully controllable second passband

Author

Tsai, Chih-Ming ; Lee, Hong-Ming ; Tsai, Chin-Chuan

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

53

Issue

11

fYear

2005

Firstpage

3429

Lastpage

3439

Abstract

New designs of the dual-band filter realized by distributed circuits are studied in this paper. Series and parallel open stubs are used as the resonators to fulfil the dual-band characteristics. Two dual-band inverters are proposed, which can be easily merged with adjacent resonators to reduce the circuit size. All the theoretical analysis and design procedures are discussed in detail and have been successfully verified by experiment results.

Keywords

band-pass filters; coupled transmission lines; distributed parameter filters; resonant invertors; resonators; adjacent resonator; coupled transmission line; distributed circuit; distributed parameter filter; dual-band characteristic; dual-band filter; dual-band inverter; fully controllable second passband; immittance inverter; parallel open stub; planar filter design; series open stub; transmission-line resonator; Band pass filters; Bandwidth; Circuits; Dual band; Filtering theory; Impedance; Inverters; Passband; Resonant frequency; Resonator filters; Coupled transmission lines; distributed parameter filters; immittance inverters; transmission-line resonators;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2005.855739

Filename

1528794