Wideband ridge waveguide radiating element for phased array antennas

Agrawal, Anshul; Perry, Motty; Landry, N.R.

doi:10.1109/aps.1995.530083

Cited by 4 publications

(3 citation statements)

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“…Therefore, we propose a new antenna element type based on the open-ended ridge gap waveguide (RGW) that aims to overcome the above-mentioned limitations. The starting point of this design is a traditional ridge waveguide (WG) element which has been widely used in arrays at microwave frequencies [15], [16]. However, at high mm-wave frequencies, these hollow metal designs are rare due to the increased manufacturing complexity and the above-explained difficulties of electronics integration.…”

Section: Introductionmentioning

confidence: 99%

Wideband Open-Ended Ridge Gap Waveguide Antenna Elements for 1-D and 2-D Wide-Angle Scanning Phased Arrays at 100 GHz

Zhang

Vilenskiy

Ivashina

2022

Antennas Wirel. Propag. Lett.

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A new antenna element type based on the openended ridge gap waveguide (RGW) is proposed for phased array applications. This element type is of a particular interest at high mm-wave frequencies (≥ 100 GHz) owing to a contactless design alleviating active beam-steering electronics integration. The key challenge addressed here is a realization of a wide fractional bandwidth and scan range with high radiation efficiency. We demonstrate a relatively simple wideband impedance matching network comprised of an aperture stepped ridge segment and a single-pin RGW section. Furthermore, the E-and H-plane grooves are added that effectively suppress antenna elements mutual coupling. Results demonstrate a wide-angle beam steering (≥ 50 • ) over ≥ 20% fractional bandwidth at W-band with ≥ 89% radiation efficiency that significantly outperforms existing solutions at these frequencies. An experimental prototype of a 1×19 W-band array validates the proposed design concept through the embedded element pattern measurements.

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Section: Introductionmentioning

confidence: 99%

Wideband Open-Ended Ridge Gap Waveguide Antenna Elements for 1-D and 2-D Wide-Angle Scanning Phased Arrays at 100 GHz

Zhang

Vilenskiy

Ivashina

2022

Antennas Wirel. Propag. Lett.

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“…More recently, we have demonstrated several full-metal PAAs based on the open-ended ridge gap waveguide (RGW) [8], [9]. In general, open-ended ridge waveguide (WG) PAAs have been widely applied for microwave frequency radar applications [10]. However, their hollow metal structure significantly increases manufacturing complexity at 100+ GHz frequencies.…”

Section: Introductionmentioning

confidence: 99%

Mutual Coupling Analysis of Open-Ended Ridge and Ridge Gap Waveguide Radiating Elements in an Infinite Array Environment

Zhang

Vilenskiy

Ivashina

2022

2022 52nd European Microwave Conference (EuMC)

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In this paper, we discuss mutual coupling effects in 2-D beam-steerable antenna arrays based on open-ended ridge and ridge gap waveguide radiating elements. Considering potential applications for beyond-5G systems in W-/D-band, the radiating elements are designed full-metal realizing a high radiation efficiency. Various decoupling structures based on electromagnetic soft surfaces are applied to suppress the surface waves over the array apertures. The infinite array approach is used to analyze antenna unit cells in an isosceles triangular lattice, which results in the active reflection coefficient over a scan and frequency range. The latter is used to extract the values of the mutual coupling coefficients between the elements. The analysis demonstrates the effect of decoupling structures realizing a steep drop of the mutual coupling magnitude (≤ −20 dB) for closely-spaced array elements. This results in a wideband (≥ 20%) and wide-scan (≥ 50 o ) element beam-steering performance.

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“…Overall, the element aperture area could be 1.5 times that of the rectangular waveguide. The reason that the ridged waveguide element is seldom utilized is due to the high active reflection coefficient encountered [4,5,6] and the absence of an effective way to improve the scan match. This is partly caused by the comparatively narrow widths of the ridges used in these designs.…”

Section: Introductionmentioning

confidence: 99%

Improved performance from double ridge waveguide arrays

Chan¹

2008

2008 Asia-Pacific Microwave Conference

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Wideband ridge waveguide radiating element for phased array antennas

Cited by 4 publications

References 0 publications

Wideband Open-Ended Ridge Gap Waveguide Antenna Elements for 1-D and 2-D Wide-Angle Scanning Phased Arrays at 100 GHz

Wideband Open-Ended Ridge Gap Waveguide Antenna Elements for 1-D and 2-D Wide-Angle Scanning Phased Arrays at 100 GHz

Mutual Coupling Analysis of Open-Ended Ridge and Ridge Gap Waveguide Radiating Elements in an Infinite Array Environment

Improved performance from double ridge waveguide arrays

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