University of Oulu

Ali Ghavidel, Sami Myllymäki, Mikko Kokkonen, Nuutti Tervo, Mikko Nelo, and Heli Jantunen, "A Sensing Demonstration of a Sub THz Radio Link Incorporating a Lens Antenna," Progress In Electromagnetics Research Letters, Vol. 99, 119-126, 2021. doi:10.2528/PIERL21070903,

A sensing demonstration of a sub THz radio link incorporating a lens antenna

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Author: Ghavidel, Ali1; Myllymäki, Sami1; Kokkonen, Mikko1;
Organizations: 1Microelectronic Research Unit, University of Oulu, P. O. Box 8000, 90014, Finland
2Center for Wireless Communication Research Unit, University of Oulu, P. O. Box 8000, 90014, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.1 MB)
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Language: English
Published: EMW Publishing, 2021
Publish Date: 2021-09-06


We demonstrate that the future sixth generation (6G) radio links can be utilized for sub-THz frequency imaging using narrow beamwidth, high gain, lens antennas. Two different lenses, a bullet or hemispherical shape, were used in radio link setup (220–380 GHz) for an imaging application. Lenses performed with the gain of 28 dBi, 25 dBi, and narrowed the beamwidths of 1° and 2.5°. Plants were used as imaging objects, and their impacts on radio beams were studied. For assessment, the radio link path loss parameter was -48.5 dB, -53.2 dB, and -57.1 dB with the frequency 220 GHz, 300 GHz, and 330 GHz, respectively. Also, the impact of the radio link distance on the imaging was studied by 50 cm and 2 m link distances. In addition, the 3D image was acquired using the phase component of the image, and it showed the leaf surface roughness and the thickness, which was similar to the measured value.

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Series: Progress in electromagnetics research. Letters
ISSN: 1937-6480
ISSN-E: 1937-6480
ISSN-L: 1937-6480
Volume: 99
Pages: 119 - 126
DOI: 10.2528/PIERL21070903
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This study was supported partly by Microelectronic Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, Finland and partly by Academy of Finland 6genesis Flagship (grant No. 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
Copyright information: © The Authors 2021.