Impedance Matching in High-Power Resonant-Tunneling-Diode Terahertz Oscillators Integrated with Rectangular-Cavity Resonator

Feifan HAN; Kazunori KOBAYASHI; Safumi SUZUKI; Hiroki TANAKA; Hidenari FUJIKATA; Masahiro ASADA

doi:10.1587/transele.2020ECS6020

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Impedance Matching in High-Power Resonant-Tunneling-Diode Terahertz Oscillators Integrated with Rectangular-Cavity Resonator

Feifan HAN, Kazunori KOBAYASHI, Safumi SUZUKI, Hiroki TANAKA, Hidenari FUJIKATA, Masahiro ASADA

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Keywords: terahertz oscillators, resonant tunneling diode, rectangular cavity resonator, impedance matching

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2021 Volume E104.C Issue 8 Pages 398-402

DOI https://doi.org/10.1587/transele.2020ECS6020

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Abstract

This paper theoretically presents that a terahertz (THz) oscillator using a resonant tunneling diode (RTD) and a rectangular cavity, which has previously been proposed, can radiate high output power by the impedance matching between RTD and load through metal-insulator-metal (MIM) capacitors. Based on an established equivalent-circuit model, an equation for output power has been deduced. By changing MIM capacitors, a matching point can be derived for various sizes of rectangular-cavity resonator. Simulation results show that high output power is possible by long cavity. For example, a high output power of 5 mW is expected at 1 THz.

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