Ultra-wideband bandpass filter on aperture-backed microstrip line

Li, Zhu; Wang, H.

doi:10.1049/el:20052317

Cited by 73 publications

(38 citation statements)

References 3 publications

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“…and a notch band is thus created. Figure 6(a) shows the transmission characteristics of the resonator versus 5 , that is, the perimeter of a triangular loop resonator. As 5 increases from 31 to 37 mm, the central frequency of notch band falls off from 6.25 to 5.39 GHz and its absolute bandwidth decreases from 1.49 to 1.37 GHz.…”

Section: Realization Of Notch Bandmentioning

confidence: 99%

“…Many methods have been proposed to design various UWB bandpass filters (BPFs) by using multimode resonators (MMRs) [1,2], multilayer steppedimpedance resonators (SIRs) [3], and stub-loaded resonators [4]. To acquire the desired strong coupling between resonator and feed lines while keeping the gap width between striplines in a moderate scale that can be achieved easily by using PCB process, an aperture-backed parallel-coupled microstrip line with enhanced coupling degree is constructed to allocate the coupling peak [5,6]. For some practical applications, there is a need to avoid the interference from existing wireless communication systems such as wireless local area network in 5.0 GHz band.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Microstrip/Slotline Ultra-Wideband Bandpass Filter with a Controllable Notch Band

Guan

Gui

Xiong

et al. 2017

International Journal of Antennas and Propagation

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An ultra-wideband (UWB) bandpass filter (BPF) with a controllable notch band is presented by using hybrid microstrip/slotline structure. Firstly, a slotline resonator with symmetrically loaded stubs is fed by two microstrip lines to produce a UWB bandpass filtering response. Secondly, a microstrip triangular loop resonator is externally loaded over the slotline, and a notch band is introduced in the UWB passband. The notch band is determined by the perimeter of the loop resonator. Thirdly, two patches are added as the perturbation element to the corners of the microstrip resonator to excite a pair of degenerate modes. Bandwidth of the notch band can be tuned by properly selecting the patch size. Circuit model for the microstrip resonator loaded slotline is given and studied. Finally, the filter is designed, simulated, and measured. Measured results have agreed well with the simulated ones, demonstrating that a UWB filter with a controllable notch band has been realized.

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Section: Realization Of Notch Bandmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Microstrip/Slotline Ultra-Wideband Bandpass Filter with a Controllable Notch Band

Guan

Gui

Xiong

et al. 2017

International Journal of Antennas and Propagation

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show abstract

“…The aperture-backed inter digital coupled lines can create a transmission zero to eradicate the fifth resonant mode of the SLFSIR to make a wider upper-stop band. To make a wide pass band covering the whole UWB band, the aperture width and parallel-coupled lines length should be suitably chosen to get proper coupling [8]. The inter-digital coupled lines can increase the coupling degree to relax the tight line spacing.…”

Section: Filter With Slfsirmentioning

confidence: 99%

Compact microwave planar band pass filter

Ambily¹,

Anila²

2016

IJCI

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“…Recently, different structures have been developed in the UWB BPFs design [2][3][4][5][6][7][8][9][10][11][12][13][14]: multiple-mode resonator (MMR), hybrid microstrip/coplanar-waveguide (CPW), three-line structure and so on. In [4], four filters were designed based on threeline structure.…”

Section: Introductionmentioning

confidence: 99%

“…In [4], four filters were designed based on threeline structure. In [5,6], two filters with a wide passband were designed with MMR and DGS respectively. In [7], a miniaturized filter was designed using folded MMR.…”

Section: Introductionmentioning

confidence: 99%

An Ultra-Wideband Bandpass Filter With a Notch-Band and Wide Stopband Using Dumbbell Stubs

Chen¹,

Wei²,

Shi³

et al. 2010

PIER Letters

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Abstract-In this paper, an ultra-wideband (UWB) bandpass filter (BPF) with a notch-band at 5.8 GHz is presented. The proposed filter is constructed with multiple-mode resonator (MMR) using novel dumbbell stubs and one-arm-folded interdigital coupled lines in the input and output sides. The MMR consists of three pairs of shunt dumbbell stubs and a high impedance microstrip line. By adjusting the dimensions of the dumbbell stubs, the resonant modes of MMR are allocated in the UWB band. The arm-folded interdigital coupled lines are used to obtain a notch-band at 5.8 GHz. Finally, the proposed UWB BPF is fabricated. The simulated and measured results are in good agreement with each other.

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Ultra-wideband bandpass filter on aperture-backed microstrip line

Cited by 73 publications

References 3 publications

Hybrid Microstrip/Slotline Ultra-Wideband Bandpass Filter with a Controllable Notch Band

Hybrid Microstrip/Slotline Ultra-Wideband Bandpass Filter with a Controllable Notch Band

Compact microwave planar band pass filter

An Ultra-Wideband Bandpass Filter With a Notch-Band and Wide Stopband Using Dumbbell Stubs

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