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Proceedings Paper

Resonant tunnelling diode terahertz sources for broadband wireless communications
Author(s): Edward Wasige; Khalid H. Alharbi; Abdullah Al-Khalidi; Jue Wang; Ata Khalid; Gil C. Rodrigues; José Figueiredo
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Paper Abstract

This paper will discuss resonant tunnelling diode (RTD) sources being developed on a European project iBROW ( to enable short-range multi-gigabit wireless links and microwave-photonic interfaces for seamless links to the optical fibre backbone network. The practically relevant output powers are at least 10 mW at 90 GHz, 5 mW at 160 GHz and 1 mW at 300 GHz and simulation and some experimental results show that these are feasible in RTD technology. To date, 75 - 315 GHz indium phosphide (InP) based RTD oscillators with relatively high output powers in the 0.5 – 1.1 mW range have been demonstrated on the project. They are realised in various circuit topologies including those that use a single RTD device, 2 RTD devices and up to 4 RTD devices for increasingly higher output power. The oscillators are realised using only photolithography by taking advantage of the large micron-sized but broadband RTD devices. The paper will also describe properties of RTD devices as photo-detectors which makes this a unified technology that can be integrated into both ends of a wireless link, namely consumer portable devices and fibre-optic supported base-stations (since integration with laser diodes is also possible).

Paper Details

Date Published: 24 February 2017
PDF: 11 pages
Proc. SPIE 10103, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X, 101031J (24 February 2017); doi: 10.1117/12.2256357
Show Author Affiliations
Edward Wasige, Univ. of Glasgow (United Kingdom)
Khalid H. Alharbi, Univ. of Glasgow (United Kingdom)
Abdullah Al-Khalidi, Univ. of Glasgow (United Kingdom)
Jue Wang, Univ. of Glasgow (United Kingdom)
Ata Khalid, Univ. of Glasgow (United Kingdom)
Gil C. Rodrigues, Univ. do Algarve (Portugal)
José Figueiredo, Univ. do Algarve (Portugal)

Published in SPIE Proceedings Vol. 10103:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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