New miniaturized ring resonator bandpass filter with wide upper stopband

Author

Tsu-Wei Lin ; Jen-Tsai Kuo ; Shyh-Jong Chung

Author_Institution

Inst. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

4

Abstract

A new configuration for ring resonator is proposed for bandpass filter design with size reduction and stopband extension. The planar self-coupled ring is twisted at its middle and a short CPW section is implemented in the ground plane for the three-dimensional interconnection. The resonator has two resonance modes and the filter possesses one transmission zero on the high side of the passband. With a pair of open low-impedance stubs attached to the ring, the circuit has an area of only 9.65% of that of the conventional ring resonator filter, and the upper stopband is extended up to higher than five times the center frequency. Measured results of a fabricated prototype circuit show good agreement with the simulation.

Keywords

band-pass filters; integrated circuit interconnections; resonator filters; ground plane; planar self-coupled ring; ring resonator bandpass filter; size reduction; stopband extension; three-dimensional interconnection; transmission zero; wide upper stopband; Band-pass filters; Couplings; Filtering theory; Microstrip filters; Optical ring resonators; Resonant frequency; Resonator filters; Bandpass filter; miniaturization; ring resonator; stopband extension; transmission zero;

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.2013.6697738

Filename

6697738