A Quasi-optical THz Imaging System Using a One-port Vector Network Analyser

Zhao, Z., Farage, M. E., Yi, Y. and Li, C. (2020) A Quasi-optical THz Imaging System Using a One-port Vector Network Analyser. In: 5th International Conference on the UK-China Emerging Technologies (UCET 2020), Glasgow, UK, 20-21 Aug 2020, ISBN 9781728194899 (doi: 10.1109/UCET51115.2020.9205425)

Abstract

In this paper we demonstrate a simple single-pixel quasi-optical imaging setup with a one-port 140 GHz-220 GHz vector network analyser (VNA), a pyramidal horn antenna, a plano-convex lens and an X-Y translation stage. By placing an object at the focal plane of the lens and measuring its one-port S-parameters while scanning the object fixed onto the X-Y translation stage, 2D images of the object are constructed using S-parameter magnitude and phase information. The results show that the phase constructed image is better than magnitude constructed image in some cases. This finding indicates that VNA can be useful in THz imaging as it provides more information from the perspective of phase which can be used to enhance imaging.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Li, Professor Chong and Zhao, Mr Zimo and Farage, Michael and Yi, Yi
• Authors: Zhao, Z., Farage, M. E., Yi, Y., and Li, C.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Research Group: Microwave and Terahertz Electronics Group
• ISBN: 9781728194899
• Copyright Holders: Copyright © 2020 IEEE
• First Published: First published in Proceedings of 2020 International Conference on UK-China Emerging Technologies (UCET)
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher

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