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Phase Locking and Frequency Tuning of Resonant-Tunneling-Diode Terahertz Oscillators
Kota OGINO Safumi SUZUKI Masahiro ASADA
IEICE TRANSACTIONS on Electronics
Publication Date: 2018/03/01
Online ISSN: 1745-1353
Type of Manuscript: BRIEF PAPER
Category: Semiconductor Materials and Devices
terahertz oscillator, resonant tunneling diode, frequency tuning, phase locked loop,
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Phase locking with frequency tuning is demonstrated for a resonant-tunneling-diode terahertz oscillator integrated with a biased varactor diode. The tuning range of oscillation frequency is 606-613GHz. The phase noise in the output of the oscillator is transformed to amplitude noise, and fed back to the varactor diode together with bias voltage. The spectral linewidth at least <2Hz was obtained at the oscillation frequencies tuned by the bias voltage of the varactor diode.