Design and Characterization of a Low-Permittivity Lens for Sub-THz Applications
Rafique, Umair; Rasilainen, Kimmo; Chen, Jiangcheng; Leinonen, Marko E.; Parssinen, Aarno; Soh, Ping Jack (2024-05-23)
IEEE
23.05.2024
U. Rafique, K. Rasilainen, J. Chen, M. E. Leinonen, A. Pärssinen and P. J. Soh, "Design and Characterization of a Low-Permittivity Lens for Sub-THz Applications," 2024 IEEE International Workshop on Antenna Technology (iWAT), Sendai, Japan, 2024, pp. 129-132, doi: 10.1109/iWAT57102.2024.10535832.
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© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202408055206
https://urn.fi/URN:NBN:fi:oulu-202408055206
Tiivistelmä
Abstract
This paper presents the design of a low-permittivity (LP) extended hemispherical lens antenna with dual-layer matching sections for sub-terahertz (sub-THz) applications at 220–330GHz. The matching layers between the source and the lens work as quarter-wavelength transformers whose main role is to provide a smooth transition from high to low permittivity. A rectangular waveguide feed is used to illuminate the lens. The analysis is done by attaching the waveguide to the lens surface and by introducing an air gap between them. The results show that this air gap improves impedance matching and radiation performance across the operating band.
This paper presents the design of a low-permittivity (LP) extended hemispherical lens antenna with dual-layer matching sections for sub-terahertz (sub-THz) applications at 220–330GHz. The matching layers between the source and the lens work as quarter-wavelength transformers whose main role is to provide a smooth transition from high to low permittivity. A rectangular waveguide feed is used to illuminate the lens. The analysis is done by attaching the waveguide to the lens surface and by introducing an air gap between them. The results show that this air gap improves impedance matching and radiation performance across the operating band.
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