University of Oulu

P. Kyösti, N. Tervo, M. Berg, M. E. Leinonen, K. Nevala and A. Pärssinen, "Measured Blockage Effect of a Finger and Similar Small Objects at 300 GHz," 2021 15th European Conference on Antennas and Propagation (EuCAP), 2021, pp. 1-5, doi: 10.23919/EuCAP51087.2021.9411237

Measured blockage effect of a finger and similar small objects at 300 GHz

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Author: Kyösti, Pekka1,2; Tervo, Nuutti1; Berg, Markus1,3;
Organizations: 1Centre for Wireless Communications, University of Oulu
2Keysight Technologies, Oulu, Finland
3ExcellAnt, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-06-30


We study the effect of a finger, and other objects with similar shape, on the channel gain in short distance propagation measurements at 220—330 GHz. Channel impulse responses and channel gains of six objects are analyzed on different positions obstructing a 35 cm line of sight (LOS) link. The intention is to evaluate potential user effects on portable devices supporting the future 6G system. Very short wavelength and link distance cause strong fluctuation of channel gain even on millimetre scale movement of obstacles. The finger phantom causes 44 dB attenuation on close vicinity, 5 mm, of transmitter antenna and has similar attenuation pattern with corresponding metallic stripes. On the contrary, it is observed that some objects, such as the measured Nylon rod, may even increase the signal strength. These impacts are important when studying the wave propagation and network aspects of high frequencies systems.

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ISBN: 978-88-31299-02-2
ISBN Print: 978-1-7281-8845-4
Article number: 9411237
DOI: 10.23919/EuCAP51087.2021.9411237
Host publication: 15th European Conference on Antennas and Propagation, EuCAP 2021
Conference: European Conference on Antennas and Propagation
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work has been done in 6G Flagship programme, funded by Academy of Finland (grant no. 318927), in 5G Viima project, and in the H2020 project Hexa-X funded by the EC (Grant Agreement no. 101015956). Thanks to Keysight Technologies for measurement equipment. Thanks to Miia Nurkkala, Verkotan Oy, for the phantom hand.
EU Grant Number: (EU) Hexa-X - 6G vision and intelligent fabric of technology enablers connecting human, physical, and digital worlds
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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