Phase-Locking of a Gunn Oscillator at 3mm Waveband Using High
Temperature Superconducting Josephson Junction Harmonic Mixer

Chin. Phys. Lett.

1995, Vol. 12

Issue (4): 253-256 DOI:

Original Articles

Phase-Locking of a Gunn Oscillator at 3mm Waveband Using High Temperature Superconducting Josephson Junction Harmonic Mixer

WANG Huabing;XU Weiwei;CHENG Qiheng;JI Zhengming;GAO Ruizhang;WU Peiheng;XU Zhicai^*

Department of Information Physics, Nanjing University, Nanjing 210093; and Center for Advanced Studies in Science and Technology of Microstructures, Nanjing 210093 ^*Purple Mountain Observatory, Academia Sinica, Nanjing 210008

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WANG Huabing, XU Weiwei, CHENG Qiheng et al 1995 Chin. Phys. Lett. 12 253-256

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Abstract A Gunn oscillator at 3mm waveband has been phase-locked to a synthesizer local oscillator using a high T_c YBa₂C₃O_7-δ Josephson junction operated at 77K as the harmonic mixer, with harmonic numbers up to 52. The observed spectrum of the phase-locked output at the intermediate frequency (IF) shows clearly that the quality of the phase-locking is very good. To drive the analogue phase locking loop successfully, it is essential to have IF output and signal-to-noise ratio both as high as possible.

Keywords: 85.25.-j 74.50.+r

Published: 01 April 1995

PACS:	85.25.-j	(Superconducting devices)
	74.50.+r	(Tunneling phenomena; Josephson effects)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1995/V12/I4/0253

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	WANG Huabing
	XU Weiwei
	CHENG Qiheng
	JI Zhengming
	GAO Ruizhang
	WU Peiheng
	XU Zhicai

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