Design of a high selectivity dual-band bandpass filter with stepped impedance resonator

Author

Ye, Chang-Sin ; Su, Yan-Kuin ; Weng, Min-Hang ; Yang, Ru-Yuan

Author_Institution

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

fYear

2009

fDate

Sept. 29 2009-Oct. 1 2009

Firstpage

311

Lastpage

313

Abstract

A novel dual-band bandpass filter using dual-mode stepped impedance resonator structure (DMSIRs) and traditional stepped impedance resonator structure (SIRs) for dual-band applications at 2.4 and 5.12 GHz is proposed in this paper. By combing the DMSIRs of traditional SIRs, the two passbands are generated with the sum of the mutual coupling between the two structures. Additionally, the cross coupling structure and dual-mode behavior supply the multi-transmission zeros to possess the filter with applicable passband selectivity. The theoretical and measured results are presented and shown with good agreement.

Keywords

band-pass filters; radiofrequency filters; resonators; cross coupling structure; dual-mode behavior supply; dual-mode stepped impedance resonator structure; frequency 2.4 GHz; frequency 5.12 GHz; high selectivity dual-band bandpass filter; multitransmission zeros; mutual coupling; passband selectivity; Band pass filters; Cities and towns; Dual band; Filtering theory; Impedance; Passband; Radio frequency; Resonance; Resonant frequency; Resonator filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009. EuMC 2009. European

Conference_Location

Rome

Print_ISBN

978-1-4244-4748-0

Type

conf

Filename

5296121