Substrate Integrated Waveguide Filter With Improved Stopband Performance Using LTCC Technology

Zhang, Pingjuan; Li, Minquan

doi:10.2528/pierc14100301

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…In terms of waveguide solutions, Salehi and Mehrshahi [14] uses dissimilar oversized SIW cavities with slot loading to design two filters at f 0 = 10 GHz and better than 30 dB attenuation stopbands of up to 19 GHz. In [21,22], authors use cross-coupling of normal or higher-order modes to create transmission zeros distant from the pass-band, with, respectively, a 50 dB attenuation stopband achieved between 27.5 and 31.3 GHz for a fourth-order filter with a pass-band of 19.2 to 21.2 GHz, and a 50 dB attenuation stopband of 0-10 GHz achieved for a third-order filter with a 1 GHz bandwidth at f 0 = 13 GHz.…”

Section: X-band Filter Using Proposed Resonatormentioning

confidence: 99%

Pedestal substrate integrated waveguide resonators and filters

Nassar

Meyer

2017

IET Microwaves, Antennas & Propagation

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A new substrate integrated waveguide resonator in the form of a square‐ or cross‐shaped pedestal is proposed. The structure is developed from T‐shaped ridge waveguides, and utilises the mode separation characteristics of this type of guide to achieve wider spacing between the first two resonances, as well as miniaturisation of the resonator. Two fourth‐order X‐band filters, one with cross‐coupling, are designed using, respectively, square‐ and cross‐shaped pedestal resonators, and validated by simulation and measurement.

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Section: X-band Filter Using Proposed Resonatormentioning

confidence: 99%

Pedestal substrate integrated waveguide resonators and filters

Nassar

Meyer

2017

IET Microwaves, Antennas & Propagation

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“…SIW bandpass filter has been receiving significant attention because of high performance, compact size, low loss, and easy integration with other planar technologies [8,9]. Nevertheless, some of the conventional cavity resonators are not compatible with the millimeter-wave technology and have large sizes [10].…”

Section: Introductionmentioning

confidence: 99%

Double-Layer Tm110 Mode of Substrate Integrated Waveguide Circular Cavity (Siwcc) for Wireless Communication Applications

Nordin¹,

Khan²,

Muhammad³

et al. 2021

PIER Letters

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A substrate integrated waveguide circular cavity (SIWCC) bandpass filter is developed using printed circuit board technology. A circular cavity structure using TM 110 mode was employed in the design of the filter to operate at the frequency of 4.75 GHz, which is in the C-band frequency range. The filter was designed based on double-layer elements comprising a substrate integrated circular cavity (SICC) and a transmission line (TL) that produce single-mode resonance. In the proposed structure, circular resonators consisting of vias and a rectangular patch at the top layer are combined into a circular substrate integrated waveguide (SIW) structure. To achieve the desired resonance frequency, a triangle probe is etched at both sides of the microstrip line feeding section. The proposed structure is put in a conducting box to prevent radiation to the outside and eliminate radiation loss. Furthermore, the desired centre frequency and bandwidths of the passbands can be obtained by adjusting the dimension of the filter. To prove the concept, the filter structure is fabricated using Rogers RO4350B TM circuit materials with a dielectric constant of ε r = 3.48 and height of the substrate of 1.52 mm. The design was simulated using Ansoft HFSS simulator and measured using a vector network analyser. Simulation and fabrication results are compared for verification. The proposed SIWCC bandpass filter has potential applications in satellites and wireless communication systems.

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Substrate Integrated Waveguide Filter With Improved Stopband Performance Using LTCC Technology

Cited by 2 publications

References 22 publications

Pedestal substrate integrated waveguide resonators and filters

Pedestal substrate integrated waveguide resonators and filters

Double-Layer Tm110 Mode of Substrate Integrated Waveguide Circular Cavity (Siwcc) for Wireless Communication Applications

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