Design of a 180-degree hybrid with Chebyshev filtering response using coupled resonators

Author

Wan-Rou Liu ; Ting-Yi Huang ; Chi-Feng Chen ; Tze-Min Shen ; Ruey-Beei Wu

Author_Institution

Dept. of Electr. Eng. & Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

3

Abstract

A novel 180 ° hybrid with third-order Chebyshev filtering response is proposed in this paper. The coupling coefficients and the external quality factors can be synthesized from the theory of coupled resonator filter. The proposed idea is verified with experimental results, with good agreement between simulation and measurement. Comparing to the conventional rat-race coupler, 80% size reduction and filtering function with high frequency selectivity has been exhibited in the proposed structure.

Keywords

Chebyshev filters; Q-factor; frequency selective surfaces; resonator filters; coupled resonator filter; coupled resonators; coupling coefficients; filtering function; frequency selectivity; quality factors; rat-race coupler; size reduction; third-order Chebyshev filtering response; Band-pass filters; Chebyshev approximation; Couplers; Couplings; Ports (Computers); Q-factor; 180° hybrid; Chebyshev response; bandpass filter; circuit synthesis method; size reduction;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

Conference_Location

Seattle, WA

ISSN

0149-645X

Print_ISBN

978-1-4673-6177-4

Type

conf

DOI

10.1109/MWSYM.2013.6697512

Filename

6697512