Groove Gap Cavity Slot Array Antenna for Millimeter Wave Applications

Talepour, Zeinab; Khaleghi, Ali

doi:10.1109/tap.2018.2879831

Cited by 22 publications

(5 citation statements)

References 20 publications

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“…Gap waveguide (GW) has attracted much interest these days for its low cost over traditional CNC machined metallic waveguides and low loss over the planar circuits such as the microstrip line and substrate‐integrated waveguide (SIW) 1 . GW is widely used in designs of millimeter‐wave passive components (such as filters, 2,3 power dividers, 4 and antennas 5,6 ) and packaging of circuit modules 7 in scientific research. Generally, there are mainly three types of gap waveguides that is the groove gap waveguide, the ridge gap waveguide, and the inverted microstrip gap waveguide 8 .…”

Section: Introductionmentioning

confidence: 99%

A 3D printed bullet‐shaped filter based on zero‐gap circular waveguide cavities

Shu

Liang

et al. 2022

Int J RF Mic Comp-Aid Eng

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This paper presents an improved zero-gap waveguide structure with convexshaped gap waveguide pins and zero height air gap, which is used to enhance the structural strength and reduce the assembly errors due to the air gap variation. A fourth-order bullet-shaped circular waveguide filter is designed and fabricated to validate the proposed structure. To ease the 3D printing difficulty of the designed filter, the cosine-shaped top is utilized for self-supporting.Besides, a metallic ridge between adjacent cavities is introduced to enhance the electric coupling. The metallic ridge as well as the slots at the bottom plate help to increase the stopband suppression. Finally, the measured results of the fabricated filter excited with coaxial connectors match well with the simulation.

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Section: Introductionmentioning

confidence: 99%

A 3D printed bullet‐shaped filter based on zero‐gap circular waveguide cavities

Shu

Liang

et al. 2022

Int J RF Mic Comp-Aid Eng

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“…However, their impedance bandwidths are relatively narrow. In [1], a TE 440 -mode groove gap cavity is achieved to feed 4 � 4 slots at 37.5 GHz. Even though the aperture efficiency can reach up to 63%, its impedance bandwidth is only 16%.…”

Section: Introductionmentioning

confidence: 99%

“…Antennas [1, 2, 3, 4, 5, 6] based on high‐order mode substrate integrated cavities (SIC) have been raised by researchers because of the advantage of high efficiency in millimeter‐wave band. Compared with the conventional substrate integrated waveguide (SIW) power divider, the high‐order mode SIC not only has lower path loss, but also uses fewer vias, making the structure of the feed‐network simple, compact and reducing the manufacturing cost.…”

Section: Introductionmentioning

confidence: 99%

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60‐ghz wideband circularly polarized antenna array based on TE ₃₄₀ ‐mode SIC and sequential rotation feeding technique

Zhu

2021

IET Microwaves Antenna & Prop

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The authors propose a 4 � 4 circularly polarized (CP) antenna array with wide impedance bandwidth and axial-ratio (AR) bandwidth and design the same for 60-GHz applications. The overall structure of the proposed antenna array consists of a cavity-back circular patch array and two layer feed-networks. The upper feed-network is with four TE 340 high-order mode substrate integrated cavities (SIC). Fed with SIC, circular patches with a pair of 42°-inclined slits can achieve circular polarization. In order to improve the AR bandwidth and gain performance, the substrate integrated waveguide (SIW) sequential rotation feeding technique is utilized in the lower feed-network. For proof of concept, the 4 � 4 array is fabricated and measured. Measured results show that −10-dB impedance bandwidth of the proposed antenna array is 27.2% from 52 to 68.4 GHz and 3-dB AR bandwidth is 18.9% from 55.7 to 67.3 GHz. Furthermore, the 3-dB gain bandwidth is 26.2% from 53 to 69 GHz with a peak gain reaching 19.3 dBic at 62 GHz.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Metallic pins have low losses but they are less cost-effective than planar solutions [22]. In [23], a 4×4 slot array antenna was designed using gap waveguide technology with metallic pins. In this example, the array was made in a cavity, in which a coaxial connector excited a higher order mode.…”

Section: Introductionmentioning

confidence: 99%

$Ka$ -Band Fully Metallic TE₄₀ Slot Array Antenna With Glide-Symmetric Gap Waveguide Technology

Liao

Rajo‐Iglesias²,

Quevedo–Teruel

2019

IEEE Trans. Antennas Propagat.

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Gap waveguide has recently been proposed as a lowloss and low-cost technology for millimeter wave components. The main advantage of the gap waveguide technology is that the microwave components can be manufactured in two metallic pieces that are assembled together without electrical contact. The leakage through a thin airgap between the two pieces is prevented by a two-dimensional periodic structure offering an electromagnetic band gap (EBG). This EBG is conventionally implemented with metallic pins. Here, we propose the use of a holey glide-symmetric EBG structure to design a 4×4 slot array antenna that is fed with a TE40 mode. The TE40 excitation is designed based on a TE10-TE20 mode converter whose performance is initially evaluated by radiation pattern measurements. The final antenna, the 4×4 slot array antenna, was manufactured in aluminium by computer numerical control (CNC) milling. The antenna has a rotationally symmetric radiation pattern that could find application as a reference antenna as well as for 5G pointto-point communications.

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Groove Gap Cavity Slot Array Antenna for Millimeter Wave Applications

Cited by 22 publications

References 20 publications

A 3D printed bullet‐shaped filter based on zero‐gap circular waveguide cavities

A 3D printed bullet‐shaped filter based on zero‐gap circular waveguide cavities

60‐ghz wideband circularly polarized antenna array based on TE ₃₄₀ ‐mode SIC and sequential rotation feeding technique

$Ka$ -Band Fully Metallic TE₄₀ Slot Array Antenna With Glide-Symmetric Gap Waveguide Technology

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Groove Gap Cavity Slot Array Antenna for Millimeter Wave Applications

Cited by 22 publications

References 20 publications

A 3D printed bullet‐shaped filter based on zero‐gap circular waveguide cavities

A 3D printed bullet‐shaped filter based on zero‐gap circular waveguide cavities

60‐ghz wideband circularly polarized antenna array based on TE 340 ‐mode SIC and sequential rotation feeding technique

$Ka$ -Band Fully Metallic TE40 Slot Array Antenna With Glide-Symmetric Gap Waveguide Technology

Contact Info

Product

Resources

About

60‐ghz wideband circularly polarized antenna array based on TE ₃₄₀ ‐mode SIC and sequential rotation feeding technique

$Ka$ -Band Fully Metallic TE₄₀ Slot Array Antenna With Glide-Symmetric Gap Waveguide Technology