New Generation Technologies in Resonant-Tunneling-Diode Terahertz Oscillators

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  • 共鳴トンネルダイオードテラヘルツ発振器の新世代技術

Abstract

Resonant tunneling diodes (RTDs) are one of the candidate of terahertz source, and various researches and developments for the device are conducted by various research groups. Previously, the RTD oscillator have been known due to the extremely high frequency operation, and there were many reports on the frequency development. However, because a terahertz electromagnetic wave usages in beyond 5G/6G technologies have mentioned recently in many white paper from companies and institutes, further development of output power and functionalities are strongly required for terahertz sources. In this report, the fundamentals of RTD oscillators are shown at the beginning, and then, our recent studies on RTD oscillators for breakthrough of device operation limit are introduced. Next, structure-simplified oscillator and development of new functionality using injection locking technique are described. Finally, terahertz radar application using RTD device is shown.

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