A Slant-Polarized Coaxial Slot Array Antenna Based on Gap Waveguide MLW Technology for E-Band Applications
This paper presents the design of a coaxial slot array antenna based on gap waveguide multilayer waveguide (MLW) technology for E-Band applications. The proposed array consists of two subarrays in a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$2 \times 4$</tex> configuration, with each element designed to generate <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$45^{\circ}$</tex> slant polarization. The design features a five-layer structure, which enables slant polarization by progressively rotating the electric field orientation by <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$45^{\circ}$</tex> through intermediate cavities. The antenna achieves an impedance bandwidth of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$S_{11} < -10$</tex> dB from <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$75.8 - 81.8$</tex> GHz. With 8 radiating slots, the maximum achieved gain is <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$14.7\ \text{dBi}$</tex>.
Authors
- Abolfazl Haddadi (ORCID: https://orcid.org/0000-0003-4278-7430)
- Coen van de Ven (ORCID: https://orcid.org/0009-0000-8636-8268)
- Andrés Alayón Glazunov (ORCID: https://orcid.org/0000-0003-2101-4519)
- Reza Gheybi Zarnagh
Institutions
- University of Twente (NL)
Publication Details
- Published
- 2025-03-30
- DOI
- https://doi.org/10.23919/eucap63536.2025.10999446
- Primary Topic
- Microwave Engineering and Waveguides
- Type
- article
- Field-Weighted Citation Impact
- 0.00