Novel Defected Ground Structure and Two-Side Loading Scheme for Miniaturized Dual-Band SIW Bandpass Filter Designs

Xu, Sai; Ma, Kaixue; Meng, Fanman; Yeo, Kiat Seng

doi:10.1109/lmwc.2015.2400916

Cited by 115 publications

(81 citation statements)

References 11 publications

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“…Consequently, it is important to design filters exhibiting dual‐band frequency responses with features such as small size, minimal insertion loss and high selectivity. Since substrate‐integrated waveguide (SIW) enables the realization of low‐profile and low‐cost planar filters while maintaining high performance of conventional waveguides, it has been employed to achieve dual‐band filters – . By loading different types of defected ground structure resonators, 2 passbands are generated separately.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized dual‐band filter using triple‐folded substrate‐integrated waveguide resonators

Jiang

Chang

et al. 2018

Micro & Optical Tech Letters

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A miniaturized dual‐band filter using novel triple‐folded substrate‐integrated waveguide (TFSIW) resonators is proposed in this paper. The proposed TFSIW is enabled by specially designed folding structures, which leads to significant size reduction. The 2 lowest resonant modes, namely folded TE102 mode and folded TE101 mode in the TFSIW cavity, are utilized to achieve a dual resonance response with a small frequency ratio. To validate the design concept, a dual‐band filter operating at 1.91 and 2.32 GHz is designed, fabricated and characterized. Good agreement has been achieved between the simulation and measurement results. Moreover, the size of the proposed TFSIW resonator has been reduced for 86% compared with the conventional SIW resonator (assuming the same frequency ratio).

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Section: Introductionmentioning

confidence: 99%

Miniaturized dual‐band filter using triple‐folded substrate‐integrated waveguide resonators

Jiang

Chang

et al. 2018

Micro & Optical Tech Letters

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“…Miniaturization of SIW devices can be achieved by folding the cavity or by using fraction of a mode . The SIW components can also be made compact by loading them with slotted structures . The design of a compact dual‐mode dual‐band SIW cavity with loaded structure is therefore a tedious task, and one has to encounter many challenges especially when tunability is desired.…”

Section: Introductionmentioning

confidence: 99%

Design of compact dual‐mode dual‐band SIW filter with independent tuning capability

Naeem

Khan

Shafique

2017

Micro & Optical Tech Letters

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This work reports on a novel design of a compact and tunable filter in substrate integrated waveguide technology. The proposed dual‐band filter is based on resonators that exploit two resonating modes excited in a single SIW cavity. The structure is designed in such a way that the two bands of dual‐band filter each having two poles can be tuned independently. This property of the proposed filter makes it a suitable choice for multistandard applications with fine tuning as envisaged for future generation wireless technologies. The measured results of the fabricated prototypes validate the proposed design concept.

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“…Owing to the potential two layers on both top and bottom of the substrate, DGSRs can be efficiently utilised to design multiband filters. A dual-band BPF was realised by stacking two SLRs in [12]. A hybrid-coupled microstrip/slotline quad-mode resonator was proposed to design a quad-band BPF with high selectivity in [13].…”

Section: Introductionmentioning

confidence: 99%

Tri-Band BPF With Six Transmission Zeros Based on Quad-Mode DGS Resonator and Msir

Peng¹,

Li²,

Deng³

2017

PIER C

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Abstract-This paper presents the comprehensive design and analysis of a tri-band bandpass filter (BPF) based on a novel quad-mode defected ground structure resonator (QMDGSR) fed by two 50 Ω microstrip lines under the source-load coupling condition. Four transmission zeros (TZs) are produced in the proposed tri-band bandpass structure with two TZs beside each passband. All the four TZs are thoroughly analysed using equivalent circuit models based on the even-/odd-mode theory, and the corresponding equation for extracting the frequency of each TZ is developed and verified. The bandwidths (BWs) of the 1st and 3rd operating bands are broadened by incorporating the proposed triband bandpass structure with a traditional microstrip stepped impedance resonator (MSIR). Also, two additional TZs are generated due to the coupling between the feeding lines and the newly incorporated MSIR, which significantly result in the passband selectivity improvement. The lower and upper stopband rejections of the fabricated prototype are as high as 83.3 and 43.9 dB, respectively.

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Novel Defected Ground Structure and Two-Side Loading Scheme for Miniaturized Dual-Band SIW Bandpass Filter Designs

Abstract: Novel defected ground structure and two-side loading scheme for miniaturized dual-band SIW bandpass filter designs

Cited by 115 publications

References 11 publications

Miniaturized dual‐band filter using triple‐folded substrate‐integrated waveguide resonators

Miniaturized dual‐band filter using triple‐folded substrate‐integrated waveguide resonators

Design of compact dual‐mode dual‐band SIW filter with independent tuning capability

Tri-Band BPF With Six Transmission Zeros Based on Quad-Mode DGS Resonator and Msir

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