A Broadband <i>E</i>-Band Single-Layer-SIW-to-Waveguide Transition for Automotive Radar

Zhu, Kaicheng; Yu, Xiao; Tan, Wenhao; Luo, Hanbin; Sun, Houjun

doi:10.1109/lmwc.2022.3140267

Cited by 11 publications

(5 citation statements)

References 21 publications

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“…Furthermore, Li and Luk [34] employ a complex configuration with an increased number of blind vias in a three-layered stackup, which makes the design costly and prone to manufacturing misalignment. As it can be observed, the proposed solution in this work is the only PCB-based one, which is compatible with MMIC integration through GCPW termination, which is not the case for the SIW terminated designs reported in [33] and [34], resulting in an estimated more losses associated with SIW to MMIC transitions.…”

Section: Experimental Investigationmentioning

confidence: 91%

“…12 (bottom view). Perfectly sealed and hermetic designs are reported in [18], [32], [33], and [34]. Yet, [33] requires a tapered metallic transition to be compatible with standard WR12.…”

Section: Experimental Investigationmentioning

confidence: 99%

“…Perfectly sealed and hermetic designs are reported in [18], [32], [33], and [34]. Yet, [33] requires a tapered metallic transition to be compatible with standard WR12. Moreover, the design presented in [32] operates in the lower K -Band, requires huge computational resources and sophisticated manufacturing to be realized.…”

Section: Experimental Investigationmentioning

confidence: 99%

See 2 more Smart Citations

Flippable and Hermetic E-Band RWG to GCPW Transition With Substrate Embedded Backshort

Zahran

Moscato

Fonte

et al. 2023

IEEE Trans. Microwave Theory Techn.

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In this article, a novel millimeter wave (mm-wave), fully hermetic and flippable transitioning structure between grounded coplanar waveguides (GCPWs) and rectangular waveguides (RWGs) is introduced. This transition, realized through standard printed circuit board (PCB) technology, can be employed to feed a waveguide (WG) compliant device on any face of a board given its flexibility in trace routing and component placement. The proposed structure utilizes a mix of transmission line and substrate integrated waveguide (SIW) interconnected with an in-substrate embedded back-short. The transition, in all its configurations, targets a fractional bandwidth (FBW) wider than 20% to cover the commercial E-band spectrum. Moreover, at center frequency the predicted insertion loss (IL) for both normal and flipped transitions is 0.4 and 0.46 dB, respectively. Parametric and yield analyses, together with postmanufacturing inspections have been performed to assess the robustness of the design and to identify the critical manufacturing inaccuracies. The experimental validations confirm the wideband operation with an IL bounded below 2.3 dB for the worst case of a backto-back configuration.

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Section: Experimental Investigationmentioning

confidence: 91%

“…12 (bottom view). Perfectly sealed and hermetic designs are reported in [18], [32], [33], and [34]. Yet, [33] requires a tapered metallic transition to be compatible with standard WR12.…”

Section: Experimental Investigationmentioning

confidence: 99%

See 1 more Smart Citation

Flippable and Hermetic E-Band RWG to GCPW Transition With Substrate Embedded Backshort

Zahran

Moscato

Fonte

et al. 2023

IEEE Trans. Microwave Theory Techn.

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“…Up to now, transition structures from SIW to standard RWG have been divided into two categories. The first is vertically connected structures, including some innovative patch-loaded coupling cavity configurations [21,22] and multilayer transition architecture [23]. The second category is horizontally connected structures such as a fin-line structure [24] and a height or width stepped waveguide transformer [25,26].…”

Section: Introductionmentioning

confidence: 99%

A Method for Low Sidelobe Substrate-Integrated Waveguide Slot Antenna Design Applied for Millimeter-Wave Radars

Wang,

Zhou,

Fang

2024

Remote Sensing

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With the development of millimeter-wave radar systems, substrate-integrated waveguide (SIW) slot antennas have been widely used. This paper presents a computational approach for calculating the equivalent normalized admittance of slot in low sidelobe SIW longitudinal slot antennas. In contrast to the existing methods, this method takes into account the impact of the N-slots coupling on the admittance. Through this method, fitting functions for resonant length and conductance are obtained, which describe the relationship between the resonant length, resonant conductance, and offset of slots. Moreover, based on the two fitting functions, a low sidelobe SIW longitudinal slot linear antenna is designed for millimeter-wave radar applications at 77 GHz. This antenna consists of a transition from the standard WR-12 waveguide to the SIW and a set of radiating slots. The simulation results indicate an impedance bandwidth of 4.8% and a gain of 13.2 dBi. The sidelobe level in the H-plane is below −28 dB, which meets the desired specifications and confirms the accuracy of the presented method.

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“…In the past decades, various approaches have been presented to achieve the transition from a substrate-integrated waveguide to an air-filled RWG based on traditional printed circuit board (PCB) technology [ 5 , 6 , 7 , 8 , 9 ]. However, the permittivity of LTCC dielectric substrate is high.…”

Section: Introductionmentioning

confidence: 99%

A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications

Yuan

Hao

et al. 2022

Micromachines

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In this paper, a novel wideband transition from a laminated waveguide (LWG) to an air-filled rectangular waveguide (RWG) is proposed for millimeter-wave integration solutions based on multilayer low-temperature co-fired ceramic (LTCC) technology. The integrated transition cavity is divided into several resonators by introducing five grounded via holes. Due to the magnetic wall existing in the symmetry plane, the equivalent circuit of the proposed transition can be simplified as a three-pole filter model to explain the working mechanism with wideband performance. A W-band integrated LWG-to-RWG transition is designed as an example using LTCC technology. Two back-to-back prototypes with different lengths are fabricated and measured. A measured 25.7% bandwidth from 76 GHz to 101 GHz can be achieved for return loss better than 14 dB. The average insertion loss of a single transition is about 0.5 dB. The compact structure and wideband performance give it potential in high-density millimeter-wave and terahertz packaging.

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A Broadband E-Band Single-Layer-SIW-to-Waveguide Transition for Automotive Radar

Cited by 11 publications

References 21 publications

Flippable and Hermetic E-Band RWG to GCPW Transition With Substrate Embedded Backshort

Flippable and Hermetic E-Band RWG to GCPW Transition With Substrate Embedded Backshort

A Method for Low Sidelobe Substrate-Integrated Waveguide Slot Antenna Design Applied for Millimeter-Wave Radars

A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications

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