An inter-subband device with terahertz applications

Buckle, Philip Derek ORCID: https://orcid.org/0000-0001-9508-7783, Dawson, P., Lynch, M. A., Chun-Yi, Kuo, Missous, Mohammed and Truscott, W. S. 2000. An inter-subband device with terahertz applications. IEEE Transactions on Microwave Theory and Techniques 48 (4) , pp. 632-638. 10.1109/22.841953

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Abstract

A theoretical analysis of a modulator based on two coupled resonators is presented in this paper. This modulator exhibits a resonant enhancement in its response. It is used as a component of tunneling structures designed for operation at terahertz frequencies; unlike conventional resonant tunneling structures, these use triple barriers. Data from optical and electrical measurements on a series of devices based on one design of a triple-barrier tunneling structure have been analyzed to estimate their behavior at frequencies over 1 THz. The analysis gives values for the resonantly enhanced admittance, its bandwidth, the bias-frequency relationship, and the requirements for a matching circuit to a 50-Ω environment. The results show that one existing structure might be used in oscillators working at 1 THz.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Institute of Electrical and Electronics Engineers
ISSN:	0018-9480
Last Modified:	19 May 2023 01:41
URI:	https://orca.cardiff.ac.uk/id/eprint/46199

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