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Accurate modelling and measurement of the impedance match between UTC photodiodes and THz antennas

Natrella, M; Liu, CP; Graham, C; van Dijk, F; Liu, H; Renaud, CC; Seeds, AJ; (2016) Accurate modelling and measurement of the impedance match between UTC photodiodes and THz antennas. In: (Proceedings) 41st International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2016). IEEE (In press). Green open access

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Abstract

Maximising the power extracted from UTC photodiodes is central to the successful realisation of photonic terahertz emitters. For antenna integrated UTCs this requires the optimisation of the impedance match between UTCs and antennas. We present a comprehensive investigation of the UTC output impedance up to 400 GHz, by means of a semi-analytical approach and using 3D full-wave modelling. We introduce a new, accurate, UTC circuit model, exhibiting very good agreement with the measurements. By properly taking into account the UTC-to-antenna impedance match, we demonstrate successful prediction of the absolute level of power radiated by a bow-tie antenna integrated UTC.

Type: Proceedings paper
Title: Accurate modelling and measurement of the impedance match between UTC photodiodes and THz antennas
Event: 41st International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2016)
Location: Copenhagen, Denmark.
Dates: 25 September 2016 - 29 September 2016
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Copyright © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1516851
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