Compact bandstop filter using defected ground structure (DGS)

Rehman, Sajjad Ur; Sheta, Abdel Fattah; Alkanhal, Majeed A. S.

doi:10.1109/siecpc.2011.5876972

Cited by 35 publications

(22 citation statements)

References 7 publications

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“…The ground plane of a standard 50-ohm microstrip line (ML) and a stepped-impedance microstrip line are perturbed by cascaded Ushaped DGSs to generate multi-band that is beneficial to narrow band performance and mutual coupling of this new DGS which creates multiple-resonance characteristics in the frequency response. The new bandstop filters have more operation bands compared with relative reported works [4,11,12], and have advantages of novel structures, miniature size for the DGS cascade and reduced defection cells, and good performances of transmission zeros and low loss. The designs are verified by experiment.…”

Section: Introductionmentioning

confidence: 97%

New U-Shaped DGS Bandstop Filters

Xiao¹,

Yan-peng²

2012

PIER C

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Abstract-In this paper, new microstrip bandstop filters with single band, dual-band and tri-band by using U-shaped defected ground structures are presented without the assistance of coupled lines or certain resonators, and the application of DGS is developed. The proposed bandstop filters have good performances of low loss, multiband operation, transmission zeros which improve the filter frequency selectivity, and miniaturization because of the cascade of DGS and minimum defected patterns which reduce the circuit size. The new designs are demonstrated by measurement.

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Section: Introductionmentioning

confidence: 97%

New U-Shaped DGS Bandstop Filters

Xiao¹,

Yan-peng²

2012

PIER C

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“…Defected Ground Structure (DGS) was popular in bandstop filter to accomplish the S-parameter performances and smaller size [8][9]. DGS has affected the ground plane structures periodic or non-periodic cascaded.…”

Section: Introductionmentioning

confidence: 99%

Parametric studies on effects of defected ground structure (DGS) for dual band bandstop microstrip filter

Mahmud¹,

Razalli²,

Rahim³

et al. 2017

EPJ Web Conf.

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Abstract.A dual-band bandstop microstrip filter is proposed and designed by using microstrip resonator with Defected Ground Structure (DGS). The DGS are placed in the ground plane to obtain high attenuation of the bandstop filter response. The proposed is designed by using R04003C printed circuit board with dimension of 38 mm x 20 mm. Simulated result shows an insertion loss of -12.31 dB, a return loss at -1.75 dB for center frequency at 2.4 GHz and insertion loss of -22.93 dB, a return loss of -0.78 dB for center frequency at 5.8 GHz The results of simulated in different parameters of DGS is analysed and discussed.

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“…To overcome these problems, the authors of this letter have proposed quasi-lumped elements based on defected ground structures (DGS) for wireless power transfer for the first time in [1,2]. Etching a DGS on the opposite side of a microstrip feeding line realizes a bandstop filter (BPF) characteristics [5,6,7,8]. Also, the DGSs exhibit a bandpass filter (BPF) characteristics by introducing a discontinuity in the feeding microstrip line above the DGS's slots and adding some stubs for matching [9,10].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric wireless power transfer systems using coupled DGS resonators

Hekal

Abdel‐Rahman

Allam

et al. 2016

IEICE Electron. Express

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This paper presents a new design for wireless power transfer (WPT) systems using asymmetric structures for the transmitter (TX) and the receiver (RX), and the TX/RX are constructed using spiral-strips defected ground structure (DGS) resonators. The proposed spiral-strips DGS resonator overcome the problem of low self-inductance that encountered by H-shape DGS resonator in [1,2], so that the proposed WPT system that employs the proposed spiral-strips DGS resonators has better efficiency and higher power transmission distance. Design methodology of the proposed WPT system are formulated and fabricated. The measurement results show a WPT efficiency of 78% at a transmission distance of 40 mm with the TX and RX areas of 50 × 50 mm 2 and 30 × 30 mm 2 , respectively.

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Compact bandstop filter using defected ground structure (DGS)

Cited by 35 publications

References 7 publications

New U-Shaped DGS Bandstop Filters

New U-Shaped DGS Bandstop Filters

Parametric studies on effects of defected ground structure (DGS) for dual band bandstop microstrip filter

Asymmetric wireless power transfer systems using coupled DGS resonators

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