Broadband bandpass filter with wide upper stopband using stub-loaded multiple-mode resonators

A compact wideband filter with a wide upper stopband using stub-loaded multiple-mode resonators is designed. The multimode behaviour and characteristics of the proposed filter structure are studied by conventional natural modes analysis. A prototype is designed and fabricated at 1 GHz (f0) with 3 dB...

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Veröffentlicht in:	Electronics letters 2013-06, Vol.49 (13), p.818-820
Hauptverfasser:	Li, F, Che, W.Q, Gu, L.M, Xue, Q
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences band‐pass filters broadband bandpass filter Circuit properties compact wideband filter conventional natural modes analysis Electric, optical and optoelectronic circuits Electronic circuits Electronics Exact sciences and technology frequency 1 GHz Frequency filters Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwave technology resonator filters stub‐loaded multiplemode resonators UHF filters wide upper stopband
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Beschreibung
Zusammenfassung:	A compact wideband filter with a wide upper stopband using stub-loaded multiple-mode resonators is designed. The multimode behaviour and characteristics of the proposed filter structure are studied by conventional natural modes analysis. A prototype is designed and fabricated at 1 GHz (f0) with 3 dB fractional bandwidths 102% and 20 dB stopband attenuation up to 10.75f0. Good agreement between simulations and experiments is observed.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2013.1609