Slotline annular ring elements and their applications to resonator, filter and coupler design

Author

Ho, Chien-Hsun ; Fan, Lu ; Chang, Kai

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

41

Issue

9

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

1648

Lastpage

1650

Abstract

A slotline type of annular ring element has been developed as a new circuit component for resonator, filter, and hybrid coupler applications. Various coupling methods were devised for the use of this slotline ring in many applications. A new type of slotline dual-mode filter has been developed with a bandwidth of 12.3% and a stopband attenuation of more than 30 dB at the center frequency of 3.5 GHz. Another slotline type of cross-over hybrid ring coupler which utilized a slotline T-junction and a resistively-coupled slotline ring has also been developed with a bandwidth of more than 80%, an excellent power dividing balance of ±0.2 dB, and a fairly good isolation of 35 dB. With the ease of adding series and shunt components, the slotline annular ring element should have many applications for MICs and MMICs

Keywords

MMIC; band-pass filters; hybrid integrated circuits; microstrip components; microwave filters; microwave integrated circuits; passive filters; resonators; strip line components; waveguide couplers; 3.5 GHz; MICs; MMICs; annular ring elements; cross-over hybrid ring coupler; dual-mode filter; hybrid coupler application; resistively-coupled slotline ring; resonator; slot line; slotline T-junction; slotline type; Band pass filters; Circuit optimization; Coplanar waveguides; Coupling circuits; Frequency; Microstrip resonators; Optical ring resonators; Resonance; Resonator filters; Slotline;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.245694

Filename

245694