Slow Wave Substrate-Integrated Waveguide With Miniaturized Dimensions and Broadened Bandwidth

Zhang, Yin; Deng, Jieqiong; Sun, Dongquan; Yin, Jia‐Yuan; Guo, Lixin; Ma, Xiaohua; Hao, Yue

doi:10.1109/tmtt.2021.3074170

Cited by 15 publications

(4 citation statements)

References 31 publications

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“…In practice, by loading such a SW structure, the effective permeability and permittivity of the SIW are improved concurrently resulting in a lower cut‐off frequency, lower phase velocity, and increased slow‐wave factor (SWF). Alternatively, the proposed SW‐SIW can be viewed as a dielectric‐filled rectangular waveguide, whose upper part is filled with high permittivity medium and lower part is filled with a slightly high permeability medium 28,29 …”

Section: Sw‐siw Unit Cell Analysismentioning

confidence: 99%

“…Alternatively, the proposed SW-SIW can be viewed as a dielectric-filled rectangular waveguide, whose upper part is filled with high permittivity medium and lower part is filled with a slightly high permeability medium. 28,29 The concentration of the electric field in the upper substrate and modification of magnetic field distribution in SW-SIW can be established by comparing the amplitude distributions of the electric and magnetic fields on the cross-section of the proposed SW-SIW and conventional SIW, as shown in Figures 3 and 4. It is observed from Figure 3 that for a conventional SIW the E-field is uniform along with its height, but in SW-SIW the electric field is concentrated in the upper substrate.…”

Section: Sw Effectmentioning

confidence: 99%

“…This causes the increase in effective permittivity of the SIW, which in turn leads to a reduction in phase velocity and cut‐off frequency. Recently, an SW‐SIW structure is proposed in Reference 29 with an improved SW factor (SWF). Furthermore, several LWAs are presented based on the SW structure.…”

Section: Introductionmentioning

confidence: 99%

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A miniaturized mm‐wave leaky wave antenna based on CRLH slow‐wave SIW for symmetric wide angle beam scanning

Agarwal

Das

Yadava

2022

Int J RF Mic Comp-Aid Eng

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In this article, a novel miniaturized wide beam scanning range multi-layered mm-wave leaky-wave antenna (LWA) based on slow-wave (SW) substrateintegrated waveguide (SIW) is presented. The SW effect is introduced by loading conventional SIW with internal metalized blind vias connected to the bottom ground plane. The SW effect in the SIW structure causes the separation of the electric and magnetic field components in the structure which leads to the reduction in lateral dimensions of the proposed topology by 35% as compared to the conventional SIW. The proposed LWA exhibits a miniaturized volume of 6.6 Â 0.41 Â .07 λ 3 . The radiation in the proposed design is realized by introducing U-shaped slots in the unit cell of the SW-SIW structure. Experimental results show that the proposed SW-SIW LWA achieves almost symmetric and continuous beam scanning from À48 to 52 including the broadside direction within the impedance bandwidth of 23.7-28.1 GHz. The proposed antenna achieves a peak gain of 14.52 dBi and the half-power beamwidth of LWA is as low as 10 . The proposed antenna also exhibits radiation efficiency of above 90% within the bandwidth. The proposed design can be a potential candidate for mm-wave frequency beam scanning applications.

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Section: Sw‐siw Unit Cell Analysismentioning

confidence: 99%

Section: Sw Effectmentioning

confidence: 99%

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A miniaturized mm‐wave leaky wave antenna based on CRLH slow‐wave SIW for symmetric wide angle beam scanning

Agarwal

Das

Yadava

2022

Int J RF Mic Comp-Aid Eng

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“…Slow-wave microwave components are a branch of metamaterials that provide good performance in terms of out-of-band rejection and size reduction, making them a good candidate to address the strict requirement of satellites. Many investigations have been made to exploit the benefits of slow-wave structures in implementing microwave and mm-wave components [2], [3]. One of the worthy mentions is the implementation of slowwave substrate integrated waveguide (SW-SIW) [2], where the slow-wave effect inside the SIW was created by an array of periodic blind vias inside the propagation medium.…”

Section: Introductionmentioning

confidence: 99%

A Compact Slow-Wave Filter with Double-sided Selectivity and Wide Out-of-Band Rejection

Arsanjani

Farahani

Rezaee

et al. 2021

2021 IEEE Asia-Pacific Microwave Conference (APMC)

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In this paper, a miniaturized filter with double-sided selectivity and wide out-of-band rejection is presented. The slow-wave and negative cross-coupling structures are effectively adopted to realize an ultra-compact K-band filter with two symmetric transmission zeros. Starting from a bandpass filter configured for a center frequency of 18.5 GHz and the main-line couplings that only exhibits a good out-of-band rejection of 30 dB up to 30 GHz, the two proposed negative cross-couplings enable the steep roll-off out-of-band rejections as well as low in-band insertion losses of 1.7 dB and 2.4 dB. The designed structures are utilizing both the additive manufacturing and PCB-based technology which in turn, provide a simple, low-profile, and cost-effective fabrication process for highly integrated RF systems, particularly in satellite applications.

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Miniaturized Slow-Wave SIW-Based Circularly Polarized CRLH Leaky Wave Antenna Array Supporting Wide Angle Beam Scanning for Radar Applications

2023

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Slow Wave Substrate-Integrated Waveguide With Miniaturized Dimensions and Broadened Bandwidth

Cited by 15 publications

References 31 publications

A miniaturized mm‐wave leaky wave antenna based on CRLH slow‐wave SIW for symmetric wide angle beam scanning

A miniaturized mm‐wave leaky wave antenna based on CRLH slow‐wave SIW for symmetric wide angle beam scanning

A Compact Slow-Wave Filter with Double-sided Selectivity and Wide Out-of-Band Rejection

Miniaturized Slow-Wave SIW-Based Circularly Polarized CRLH Leaky Wave Antenna Array Supporting Wide Angle Beam Scanning for Radar Applications

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