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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 4, April 2000

Table of Contents for this issue

Complete paper in PDF format

An Inter-Subband Device with Terahertz Applications

Philip D. Buckle, Philip Dawson, Mark A. Lynch, Chun-Yi Kuo, Mohammed Missous and William S. Truscott

Page 632.

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- environment. The results show that one existing structure might be used in oscillators working at 1 THz.

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