A Compact Terahertz Multibeam Antenna Based on a Multimode Waveguide Beamforming Structure

Shaoyuan Zhu; Hongda Lu; Talal Skaik; Yong Liu; Yi Wang

doi:10.1109/TTHZ.2023.3327563

A Compact Terahertz Multibeam Antenna Based on a Multimode Waveguide Beamforming Structure

Shaoyuan Zhu, Hongda Lu^*, Talal Skaik, Yong Liu, Yi Wang

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Research output: Contribution to journal › Article › peer-review

Abstract

In this letter, a fully metallic terahertz (THz) multimode-waveguide-based multibeam antenna operating at the band from 410 to 480 GHz is proposed. The antenna is composed of four waveguide feeders, a multimode waveguide beamforming network, four grooved waveguide phasers and a flare radiation aperture. It is realized by using high-precision Computer Numerical Control (CNC) machining technology. The measured results demonstrate that the reflection coefficients of all feeding ports are below -10 dB across the operating band. Multiple beams at the scanning range of ±32° are obtained with a scan loss less than 2 dB at 425 GHz. Wideband radiation characteristics with a maximum gain above 15 dBi and a gain fluctuation below 3 dB are realized from 410 to 480 GHz. The measured and simulated results agree very well. The antenna offers a compact and easy to implement solution for THz frequencies.

Original language	English
Pages (from-to)	122-125
Number of pages	4
Journal	IEEE Transactions on Terahertz Science and Technology
Volume	14
Issue number	1
DOIs	https://doi.org/10.1109/TTHZ.2023.3327563
Publication status	Published - 1 Jan 2024

Keywords

Grooved waveguide phaser
multibeam antenna
multimode waveguide (MMWG)
terahertz (THz)

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10.1109/TTHZ.2023.3327563

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title = "A Compact Terahertz Multibeam Antenna Based on a Multimode Waveguide Beamforming Structure",

abstract = "In this letter, a fully metallic terahertz (THz) multimode-waveguide-based multibeam antenna operating at the band from 410 to 480 GHz is proposed. The antenna is composed of four waveguide feeders, a multimode waveguide beamforming network, four grooved waveguide phasers and a flare radiation aperture. It is realized by using high-precision Computer Numerical Control (CNC) machining technology. The measured results demonstrate that the reflection coefficients of all feeding ports are below -10 dB across the operating band. Multiple beams at the scanning range of ±32° are obtained with a scan loss less than 2 dB at 425 GHz. Wideband radiation characteristics with a maximum gain above 15 dBi and a gain fluctuation below 3 dB are realized from 410 to 480 GHz. The measured and simulated results agree very well. The antenna offers a compact and easy to implement solution for THz frequencies.",

keywords = "Grooved waveguide phaser, multibeam antenna, multimode waveguide (MMWG), terahertz (THz)",

author = "Shaoyuan Zhu and Hongda Lu and Talal Skaik and Yong Liu and Yi Wang",

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T1 - A Compact Terahertz Multibeam Antenna Based on a Multimode Waveguide Beamforming Structure

AU - Zhu, Shaoyuan

AU - Lu, Hongda

AU - Skaik, Talal

AU - Liu, Yong

AU - Wang, Yi

PY - 2024/1/1

Y1 - 2024/1/1

N2 - In this letter, a fully metallic terahertz (THz) multimode-waveguide-based multibeam antenna operating at the band from 410 to 480 GHz is proposed. The antenna is composed of four waveguide feeders, a multimode waveguide beamforming network, four grooved waveguide phasers and a flare radiation aperture. It is realized by using high-precision Computer Numerical Control (CNC) machining technology. The measured results demonstrate that the reflection coefficients of all feeding ports are below -10 dB across the operating band. Multiple beams at the scanning range of ±32° are obtained with a scan loss less than 2 dB at 425 GHz. Wideband radiation characteristics with a maximum gain above 15 dBi and a gain fluctuation below 3 dB are realized from 410 to 480 GHz. The measured and simulated results agree very well. The antenna offers a compact and easy to implement solution for THz frequencies.

AB - In this letter, a fully metallic terahertz (THz) multimode-waveguide-based multibeam antenna operating at the band from 410 to 480 GHz is proposed. The antenna is composed of four waveguide feeders, a multimode waveguide beamforming network, four grooved waveguide phasers and a flare radiation aperture. It is realized by using high-precision Computer Numerical Control (CNC) machining technology. The measured results demonstrate that the reflection coefficients of all feeding ports are below -10 dB across the operating band. Multiple beams at the scanning range of ±32° are obtained with a scan loss less than 2 dB at 425 GHz. Wideband radiation characteristics with a maximum gain above 15 dBi and a gain fluctuation below 3 dB are realized from 410 to 480 GHz. The measured and simulated results agree very well. The antenna offers a compact and easy to implement solution for THz frequencies.

KW - Grooved waveguide phaser

KW - multibeam antenna

KW - multimode waveguide (MMWG)

KW - terahertz (THz)

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A Compact Terahertz Multibeam Antenna Based on a Multimode Waveguide Beamforming Structure

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Keywords

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