Title :
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
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;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697738
