Terahertz Microstrip Elevated Stack Antenna Technology on GaN-on-Low Resistivity Silicon Substrates for TMIC

Benakaprasad, B., Eblabla, A., Li, X. , Thayne, I. , Wallis, D.J., Guiney, I., Humphreys, C. and Elgaid, K. (2017) Terahertz Microstrip Elevated Stack Antenna Technology on GaN-on-Low Resistivity Silicon Substrates for TMIC. In: 46th European Microwave Conference, London, 3-7 Oct 2016, (doi:10.1109/EuMC.2016.7824367)

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Abstract

In this paper we demonstrate a THz microstrip stack antenna on GaN-on-low resistivity silicon substrates (ρ < 40 Ω.cm). To reduce losses caused by the substrate and to enhance performance of the integrated antenna at THz frequencies, the driven patch is shielded by silicon nitride and gold in addition to a layer of benzocyclobutene (BCB). A second circular patch is elevated in air using gold posts, making this design a stack configuration. The demonstrated antenna shows a measured resonance frequency in agreement with the modeling at 0.27 THz and a measured S11 as low as −18 dB was obtained. A directivity, gain and radiation efficiency of 8.3 dB, 3.4 dB, and 32% respectively was exhibited from the 3D EM model. To the authors' knowledge, this is the first demonstrated THz integrated microstrip stack antenna for TMIC (THz Monolithic Integrated Circuits) technology; the developed technology is suitable for high performance III-V material on low resistivity/high dielectric substrates.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Li, Dr Xu and Thayne, Professor Iain and Benakaprasad, Miss Bhavana and Elgaid, Dr Khaled
Authors: Benakaprasad, B., Eblabla, A., Li, X., Thayne, I., Wallis, D.J., Guiney, I., Humphreys, C., and Elgaid, K.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Published Online:19 January 2017
Copyright Holders:Copyright © 2016 IEEE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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