Ka-band planar slotted waveguide array based on groove gap waveguide technology with a glide-symmetric holey metasurface

Herrán, L.F.; Brazález, Astrid Algaba; Rajo‐Iglesias, Eva

doi:10.1038/s41598-021-88054-5

Cited by 16 publications

(5 citation statements)

References 32 publications

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“…The comparison between this work with other arrays in similar frequency bands based on the use of layer slotted waveguides is presented in Table 1. This includes gap waveguide [67], groove gap waveguide [68,69], slotted waveguide in groove gap waveguide (GGWG) implemented with glide symmetric holes [70], in conventional rectangular waveguide (RWG) [71] and in SIW [72].…”

Section: Modified Transverse Polarization Antennamentioning

confidence: 99%

Design and analysis antennas of transverse polarization on the dielectric waveguide

Shaaban

Насыбуллин

Sedelnikov

2023

Preprint

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This paper addresses the issue of constructing millimeter band antennas using dielectric waveguide structures. A new type of linear antenna, incorporating metal pins on the side walls of the grooved dielectric waveguide, is proposed for generating polarization perpendicular to the waveguide axis. However, these antennas suffer from the drawback of cross-polarized radiation in directions close to the waveguide axis. To overcome this limitation, a modified antenna design with transverse polarization is introduced, featuring a closed groove waveguide with a longitudinal slot in the top of wall. The paper provides a comparison between two types of dielectric waveguide antennas. First, waveguide antenna with grooves in the dielectric which resulting longitudinal polarization, and second, waveguide antenna with quarter-wavelength pins which resulting transverse polarization. Electrodynamic modeling data is provided to demonstrate the effectiveness of the proposed antennas for satellite, 5G antenna, and radar applications. Finally, antenna of quarter-wavelength pins is proposed with frequency of 39GHz, gain of 19.8dBi, width of radiation pattern of 3.2\(^{\circ}\) and side lobe level (SLL) of -13.3dB has been achieved.

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Section: Modified Transverse Polarization Antennamentioning

confidence: 99%

Design and analysis antennas of transverse polarization on the dielectric waveguide

Shaaban

Насыбуллин

Sedelnikov

2023

Preprint

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“…(a) The modification of the guiding structure [45][46][47][48]; (b) The modification of the radiating element [49][50][51].…”

Section: Waveguide Slot Modelsmentioning

confidence: 99%

“…The E-plane waveguide was integrated with the cavity and split from the center broadside, giving robust assembly to the designed array at a low cost. In [48], a slot array antenna based on the use of groove gap waveguide technology was proposed, where glide-symmetric EBG holes instead of pins were used, showing a simpler solution in terms of manufacturing and assembly compared with the use of pins as the unit cell. (b) In [49] and [50], the radiating element was modified by adding in the external region a truncated waveguide radiating in free space, or a radiating patch, electromagnetically coupled to the waveguide slot.…”

Section: Waveguide Slot Modelsmentioning

confidence: 99%

A Review on Improved Design Techniques for High Performance Planar Waveguide Slot Arrays

et al. 2021

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Planar waveguide slot arrays (WSAs) have been used since 1940 and are currently used as performing antennas for high frequencies, especially in applications such as communication and RADAR systems. We present in this work a review of the most typical waveguide slot array configurations proposed in the literature, describing their main limitations and drawbacks along with possible effective countermeasures. Our attention has been focused mainly on the improved available design techniques to obtain high performance WSAs. In particular, the addressed topics have been reported in the following. Partially filled WSAs, or WSAs covered with single or multilayer dielectric slabs, are discussed. The most prominent second-order effects in the planar array feeding network are introduced and accurately modeled. The attention is focused on the T-junction feeding the array, on the effect of interaction between each slot coupler of the feeding network and the radiating slots nearest to this coupler, and on the waveguide bends. All these effects can critically increase the first sidelobes if compared to the ideal case, causing a sensible worsening in the performance of the array.

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“…Research indicates that integrating glide symmetry into periodic structures results in decreased dispersion and improved electromagnetic bandgap reactions. However, the main challenge with gap waveguide technology lies in the arrangement of the intricate hole patterns and the difficulties associated with their implementation in millimeter wave devices [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Gliding Walled Multilayer Waveguides

Shah Syed,

Yu,

Yao

et al. 2024

Electronics

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This article suggests a new waveguide design that utilizes a “walled” architecture. Instead of relying on conventional gap waveguide structures to create electronic bandgaps and prevent field leakage, the proposed design introduces a “walled” guiding mechanism. This technique preserves transmission while maintaining the multilayer approach and eliminates the need for nails or chemical bonds to attach the layers. Simulations were carried out in the W-band (75–110 GHz) and D-band (110–170 GHz) using several metals, and measurements were performed in the W-band using aluminum. The simulation results show that the reflection coefficient was less than −40 dB over the entire D-band. At the same time, the average insertion loss was around 0.0054 dB/mm and around 0.0065 dB/mm for silver and gold, respectively. Similarly, the reflection coefficient was less than −45 dB over the 75–110 GHz range, with an average insertion loss of 0.0018 dB/mm for silver and 0.003 dB/mm for gold, respectively. The aluminum model’s reflection coefficient was less than −35 dB, and the average insertion loss was 0.0035 dB/mm. The experimental results achieved a reflection coefficient of less than –30 dB and the average transmission coefficient was −0.2 dB, with an insertion loss of 0.002 dB/mm. The simple stacking ability of the weightless walled metal plates and easy fabrication makes the proposed transmission line a promising technology in mmWave and Terahertz applications.

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Ka-band planar slotted waveguide array based on groove gap waveguide technology with a glide-symmetric holey metasurface

Cited by 16 publications

References 32 publications

Design and analysis antennas of transverse polarization on the dielectric waveguide

Design and analysis antennas of transverse polarization on the dielectric waveguide

A Review on Improved Design Techniques for High Performance Planar Waveguide Slot Arrays

Investigation of Gliding Walled Multilayer Waveguides

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