Multilayer Substrate Integrated Waveguide Filter With Multimode Suppression and Wide Stopband

Chu, Peng; Feng, Jianguo; Guo, Lei; Zhang, Long; Liu, Leilei; Wu, Ke

doi:10.1109/tcsii.2022.3200065

Cited by 12 publications

(1 citation statement)

References 23 publications

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“…Another strategy for SIW miniaturization utilizes ridged half-mode SIW (RHMSIW) technology. By combining the half-mode format with continuous capacitive loading along the open side of the waveguide, it enables substantial miniaturizations of at least 75% while limiting the radiation losses at the cutoff [11], [12]. The multi-layered construction of SIW, which minimizes the lateral dimensions by stacking cavi-ties vertically [13]- [15], is an additional effective miniaturization technique.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized, Wide Stopband Filter Based on Shielded Capacitively Loaded SIW Resonators

Zheng,

Tian,

Dong

2024

Chinese J. Elect.

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Based on the full-mode capacitively loaded substrate integrated waveguide (SIW) resonator and the miniaturized shielded half-mode capacitively loaded SIW (S-HMCSIW) cavities, a novel compact high-performance filter is proposed. The footprint of the half-mode SIW (HMSIW) is further reduced due to the application of the capacitive-loading technique. By applying cross coupling, the proposed SIW filter's transmission zero enhances the stopband rejection and shows excellent selectivity. For the bandpass filter, the measured |S 21 | and |S 11 | are better than 1.09 dB and −14 dB, respectively. And a 3-dB fractional bandwidth (FBW) of 9.14-10.76 GHz (FBW=16.2%) is also observed. The filter achieves a wide stopband with a −20 dB out-of-band rejection up to 2.69f 0 (f 0 = 10 GHz), with a size of 0.39λ g × 0.51λ g only. Good agreement between measurement and simulation is obtained.

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Section: Introductionmentioning

confidence: 99%

Miniaturized, Wide Stopband Filter Based on Shielded Capacitively Loaded SIW Resonators

Zheng,

Tian,

Dong

2024

Chinese J. Elect.

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Compact linear‐phase bandpass filters with notched frequency response employing eighth‐mode substrate integrated waveguide and dual‐mode microstrip line structure

Yang,

Wang,

Yang

et al. 2024

IET Microwaves Antenna & Prop

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A series of fourth‐order bandpass filters (BPFs) with compact footprints, broad bandwidth, high selectivity, linear phase and notched response are proposed. The sketch of these BPFs is in accordance with the combination of the eighth‐mode substrate integrated waveguide (EMSIW) and dual‐mode microstrip line (DMML) resonators. The DMML resonator is constructed by means of metallic via‐holes and pad in the double‐layered structures. Among them, the DMML resonator can provide two transmission poles. Besides, the cross coupling is introduced through the vertical slot or fan‐shaped aperture in the dual‐layered substrates. The coupling schemes of the proposed BPFs can introduce two transmission zeros in the vicinity of operating passband, and the coupled scheme also exhibits a relatively flat in‐band group delay. Notched frequency responses have been obtained by exploiting the U‐shaped resonator and folded‐ring resonator embedded with the mixed EMSIW and DMML BPFs. To validate the conceptual design, the proposed BPFs are simulated, fabricated and measured. Both the simulation and measurement have reached to a satisfactory agreement.

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Compact Cross-Coupled Filter Based on Triangular SIW Cavities With Wide Stopband

Li,

2024

2024 International Conference on Microwave and Millimeter Wave Technology (ICMMT)

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Multilayer Substrate Integrated Waveguide Filter With Multimode Suppression and Wide Stopband

Cited by 12 publications

References 23 publications

Miniaturized, Wide Stopband Filter Based on Shielded Capacitively Loaded SIW Resonators

Miniaturized, Wide Stopband Filter Based on Shielded Capacitively Loaded SIW Resonators

Compact linear‐phase bandpass filters with notched frequency response employing eighth‐mode substrate integrated waveguide and dual‐mode microstrip line structure

Compact Cross-Coupled Filter Based on Triangular SIW Cavities With Wide Stopband

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