A miniaturized dual-mode ring bandpass filter with a new perturbation

A miniaturized dual-mode ring bandpass filter at 1.45 GHz with a bandwidth of 6% is demonstrated. The perturbation of the dual modes is realized by a pair of local ground defects. The miniaturization is achieved by loading the peripheral of the ring with the butterfly radial stub structure. A 41% lo...

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Veröffentlicht in:	IEEE transactions on microwave theory and techniques 2005-01, Vol.53 (1), p.343-348
Hauptverfasser:	Boon Tiong Tan, Jong Jen Yu, Chew, S.T., Leong, M.-S., Ban-Leong Ooi
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna measurements Applied sciences Band pass filters Bandpass filter Bandpass filters Bandwidth Butterflies Circuit properties Circuit simulation Design automation dual mode Electric, optical and optoelectronic circuits Electronic circuits Electronics Exact sciences and technology Frequency filters Grounds Integrated circuit measurements loaded ring Microstrip antennas Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwave filters Microwaves Miniaturization Optical ring resonators Perturbation Resonator filters Simulation
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Beschreibung
Zusammenfassung:	A miniaturized dual-mode ring bandpass filter at 1.45 GHz with a bandwidth of 6% is demonstrated. The perturbation of the dual modes is realized by a pair of local ground defects. The miniaturization is achieved by loading the peripheral of the ring with the butterfly radial stub structure. A 41% loading factor has been achieved using this method. The simulated and measured results are in good agreement.
ISSN:	0018-9480 1557-9670
DOI:	10.1109/TMTT.2004.839928