Compact ultra-wideband bandpass filter using harmonic-suppressed multiple-mode resonator

A compact ultra-wideband bandpass filter with good upper-stopband performance is presented. A wide stopband above the desired passband is realised relying on three transmission zeros of capacitive-ended parallel coupled lines. A modified multiple-mode resonator is formed with a self-contained stopba...

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Veröffentlicht in:	Electronics letters 2007-10, Vol.43 (22), p.1205-1206
Hauptverfasser:	LIM, T. B, SUN, S, ZHU, L
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Circuit properties Electric, optical and optoelectronic circuits Electronic circuits Electronics Exact sciences and technology Frequency filters Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Oscillators, resonators, synthetizers
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Beschreibung
Zusammenfassung:	A compact ultra-wideband bandpass filter with good upper-stopband performance is presented. A wide stopband above the desired passband is realised relying on three transmission zeros of capacitive-ended parallel coupled lines. A modified multiple-mode resonator is formed with a self-contained stopband. By linking this resonator with two interdigital coupled lines, an ultra-wideband bandpass filter is constituted. Predicted results are verified by experiment in a frequency range of DC to 25GHz.
ISSN:	0013-5194 1350-911X
DOI:	10.1049/el:20072094