High selectivity UWB bandpass filter with controllable bandwidth of dual notch bands

Mirzaee, Milad, Noghanian, Sima and Virdee, Bal Singh (2014) High selectivity UWB bandpass filter with controllable bandwidth of dual notch bands. Electronics Letters, 50 (19). pp. 1358-1359. ISSN 0013-5194

Abstract

A technique to implement and control the bandwidth of notch bands in an ultra-wideband (UWB) bandpass filter (BPF) based on signal superposition is described. The filter is realised by employing two wideband BPFs in a parallel configuration to establish two signal paths between input/output ports. The proposed technique can substantially increase the bandwidth of the notch band by ∼370% in comparison with the notch-band filter designs based on transversal signal interaction. The proposed filter exhibits a quasi-elliptical response over the span of the UWB spectrum defined by the Federal Communication Commission. The compact filter design has a size of 88.92 mm2.

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