Coupled-line dual-band bandpass filter with compact structure and wide stopband

A novel dual-band bandpass filter with a compact structure and a wide stopband is proposed. The total structure includes coupled-line stubs and coupled-line connected sections, leading to a compact circuit. This proposed filter can be implemented easily by using single-layer microstrip technology. T...

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Veröffentlicht in:	Electronics letters 2014-01, Vol.50 (3), p.187-189
Hauptverfasser:	Wu, Yongle, Zhou, Siyue, Zhang, Weiwei, Liao, Mengbi, Liu, Yuanan
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bandpass filters band‐pass filters band‐stop filters Circuit properties Circuits compact structure coupled‐line connected sections coupled‐line stubs dual‐band bandpass filter Electric, optical and optoelectronic circuits Electronic circuits Electronics Exact sciences and technology Frequency filters Joining Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwave technology Noise levels prototype filter Prototypes single‐layer microstrip technology UHF filters wide stopband
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Beschreibung
Zusammenfassung:	A novel dual-band bandpass filter with a compact structure and a wide stopband is proposed. The total structure includes coupled-line stubs and coupled-line connected sections, leading to a compact circuit. This proposed filter can be implemented easily by using single-layer microstrip technology. The measured results of a prototype filter show that it can operate at both 1.32 and 2.67 GHz and up to the 8 GHz 15 dB stopband.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2013.3791