Compact bandpass filters using defected ground structure (DGS) coupled resonators

Abdel‐Rahman, Adel B.; Ali, Abdulamir; Amari, S.; Omar, A.S.

doi:10.1109/mwsym.2005.1516971

Cited by 60 publications

(48 citation statements)

References 8 publications

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“…The DGS technique usually utilizes an artificial defect in the ground to provide a band-rejection characteristic [24]. Many different types of DGS cells have been used in filter design to improve the stop band characteristics with band-rejection properties [25]. Figure 3(a) shows a schematic of the proposed DGS unit cell.…”

Section: Design and Analysis Of The Proposed Dgs Cellmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Power Divider Integrated With Siw and DGS Technology

Cai²,

Shao³

et al. 2013

PIER

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Abstract-In this paper, a novel power divider integrated with substrate integrated waveguide (SIW) and defected ground structures (DGS) techniques is proposed to provide both power dividing and filtering functions. The SIW technique holds advantages of low profile, low-lost, mass-production, easy fabrication and fully integration with planar circuits. By integrating with defected ground structures (DGS) technique, the size and cost of system can be effectively reduced as the proposed power divider has a function of filtering which leads to reduction of one filter. In order to verify the design approach, the proposed power divider with equal power divisions at the center frequency of 8.625 GHz is fabricated and measured. The measured results demonstrate that the insertion loss is less than 1.2 dB and the input return loss less than 16 dB across the bandwidth of 1.4 GHz (FBW is 16%). Moreover, the imbalances of the amplitude and phase are less than 0.3 dB and 0.5 degree, respectively.

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Section: Design and Analysis Of The Proposed Dgs Cellmentioning

confidence: 99%

“…It can be modeled by LC circuit as shown in Figure 3(b) [24]. The parameters in the equivalent circuit can be determined using the following equations [25]:…”

Section: Design and Analysis Of The Proposed Dgs Cellmentioning

confidence: 99%

A Novel Power Divider Integrated With Siw and DGS Technology

Cai²,

Shao³

et al. 2013

PIER

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“…The bottom metal regions are depicted in gray. The resonator is developed from a square open-loop DGS resonator [17], which is a folded slot etched on the ground plane. It occupies a square area with sides of L 1 ; the slot width is W 1 and the length of the shorted slot stub is L 4 , as shown in Fig.…”

Section: Dual-mode Dgs Resonatormentioning

confidence: 99%

“…Therefore, dual-mode resonators with flexible feeding schemes are highly desired. DGS resonators, on the other hand, have advantages in design flexibility and have been used in the design of bandpass filters [17,19], multi-band bandpass filters [20,21], lowpass filters [22,23] and bandstop filters [24] successfully. However, they are only single-mode resonators, which result in a large circuit size.…”

Section: Introductionmentioning

confidence: 99%

Compact Dual-Mode DGS Resonators and Filters

Wang¹,

Bo-ran²

2011

PIER Letters

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Abstract-A novel and compact dual-mode defected ground structure (DGS) resonator is presented. Distinct characteristics of the proposed resonator are investigated. Using this type of resonator, a bandpass filter with the center frequency of 2.38 GHz and the fractional bandwidth of 6.7% is simulated and fabricated. The results show that this filter not only has an inherent transmission zero near the passband, but also has a very wide upper stopband with rejection better than 20 dB up to about 12 GHz.

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“…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]. In the same manner, when two DGS resonators are coupled back to back, it results in a bandpass characteristic, and power is transferred from the source to load through the DGS resonators [1,2].…”

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 bandpass filters using defected ground structure (DGS) coupled resonators

Cited by 60 publications

References 8 publications

A Novel Power Divider Integrated With Siw and DGS Technology

A Novel Power Divider Integrated With Siw and DGS Technology

Compact Dual-Mode DGS Resonators and Filters

Asymmetric wireless power transfer systems using coupled DGS resonators

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