Journal ArticleDOI
A theoretical and experimental investigation on millimeter‐wave quantum well oscillators
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In this paper, the operation and FM noise of millimeter-wave quantum well (QW) oscillators in a harmonic mode (relaxation oscillations) and a fundamental mode using post and cap waveguide mount structures were investigated.Abstract:
The operation and FM noise of millimeter-wave quantum well (QW) oscillators in a harmonic mode (relaxation oscillations) and a fundamental mode using post and cap waveguide mount structures are investigated. Harmonics up to the ninth harmonic was detected. State of the art results for QW oscillators registered were 84 μW (at 77 K physical temperature) and 60 μW at 90 GHz and 1 μW at 176 GHz (at 300 K physical temperature, respectively).read more
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Microwave solid-state active devices
George I. Haddad,Robert J. Trew +1 more
TL;DR: The development, operating principles, and state-of-the-art of various diode and transistor structures are reviewed.
Journal ArticleDOI
Two-terminal active devices for terahertz sources
TL;DR: The potential, capabilities, and limitations of two-terminal devices regarding power generation at terahertz frequencies are discussed and a new device is described that has the potential of circumventing some of the limitations of existing devices.
Journal ArticleDOI
Quantum‐well and quantum‐barrier diodes for generating submillimeter wave power
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Journal ArticleDOI
The influence of transit-time effects on the optimum design and maximum oscillation frequency of quantum well oscillators
TL;DR: In this paper, a small-signal analysis of quantum-well oscillators is presented, which includes the transit-time effects associated with a depleted spacer layer outside the quantum well.