Ultra-wideband bandpass filter based on ridged substrate integrated waveguide

Xiu-zhen, Luan; Tan, Ke

doi:10.1109/icmmt.2012.6230306

Cited by 1 publication

(1 citation statement)

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“…Since these requirements are mutually opposed, the design of a UWB filter is a rather challenging task, and therefore different methods and technologies have been employed to address it. Whilst there have been proposed only few filters based on waveguide and substrate integrated waveguide (SIW) technologies [2][3][4], microstrip technology has been widely used. This is primarily due to the fact that microstrip technology allows integration as well as significant size reduction and design flexibility in comparison to the previous two.…”

Section: Introductionmentioning

confidence: 99%

Compact circular-patch-based bandpass filter for ultra-wideband wireless communication systems

Sakotic¹,

Crnojević‐Bengin²,

Janković³

2017

AEU - International Journal of Electronics and Communications

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Ultra-wideband (UWB) is a radio technology that enables low-power-level, short-range, and wide-bandwidth communication, and it has been widely applied in personal area networks, precision geolocation, medical, surveillance, and vehicular radar systems. Since Federal Communications Commission released the unlicensed use of the UWB range (3.1-10.6 GHz), a significant attention has been paid to the development of UWB devices, particularly UWB bandpass filters. In this paper, we propose a novel UWB bandpass filter based on circular patch resonator that is grounded by via and perturbed by slits and defected ground structures. The resonator's behaviour is analysed in detail and it is shown that its specific configuration allows a flexible control of the three lowest resonant modes, which are used to form UWB passband. To demonstrate the potential of the resonator, a UWB filter has been designed, fabricated, and measured. The filter is characterized by the insertion loss lower than 1 dB and return loss higher than 17 dB within the passband, as well as by very small group delay variation of only 0.07 ns. Also, the filter exhibits suppression higher than 19 dB up to 30 GHz, and very small overall dimensions of only 0.31λ g x0.31λ g , and thus it outperforms other published UWB filters.

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Section: Introductionmentioning

confidence: 99%