A Low Phase Noise All Cryogenic Microwave Oscillator Based on a Superconductor Resonator

David Chaudy; Olivier Llopis; Bruno MarcilhacYves LemaitreOlivier dAllivy KellyJean-Michel HodeJean-Marc Lesage

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A Low Phase Noise All Cryogenic Microwave Oscillator Based on a Superconductor Resonator

机译：A Low Phase Noise All Cryogenic Microwave Oscillator Based on a Superconductor Resonator

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A 1-GHz full cryogenic oscillator is presented. The oscillator is based on a planar superconductor resonator featuring a loaded amp;inline-formulaamp; amp;tex-math notation="LaTeX"amp;${Q}$ amp;/tex-mathamp;amp;/inline-formulaamp; factor of 200 000 at low microwave input power (unloaded amp;inline-formulaamp; amp;tex-math notation="LaTeX"amp;${Q}$ amp;/tex-mathamp;amp;/inline-formulaamp; of 400 000) and on amplifying parts realized with SiGe bipolar transistors. The circuit is designed with a harmonic balance software and realized on an alumina substrate. A nonlinear model is extracted at low temperature both for the transistor and the resonator. This double nonlinearity increases the difficulty of the oscillator design and implies a strategy to limit the power inside the resonator. The vibrations of the cryogenerator are also a serious issue to get high performance. Finally, the oscillator features a phase noise of ?112 dBc/Hz at 100-Hz offset frequency and a phase noise floor of ?170 dBc/Hz (100-kHz offset) at a temperature of 65 K.

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来源
《IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control》 |2020年第12期|2750-2756|共7页
作者
David Chaudy; Olivier Llopis; Bruno MarcilhacYves LemaitreOlivier dAllivy KellyJean-Michel HodeJean-Marc Lesage;
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作者单位

Direction Générale de l’Armement (DGA), French MoD, Bruz, France;

Unité Mixte de Physique, CNRS, Thales, Paris-Sud Université Paris-Saclay, Palaiseau, France;

Thales Defense Mission Systems, Mérignac, FranceLAAS-CNRS, CNRS, Université de Toulouse, Toulouse, France;

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原文格式 PDF
正文语种英语
中图分类无线电设备、电信设备;
关键词
Phase noise; Temperature measurement; Integrated circuit modeling; Transistors; Optical resonators; Microwave oscillators; Cryogenic electronics; high-temperature superconductors (HTS); microwave oscillators; nonlinear modeling; phase noise; superconducting resonator;

A Low Phase Noise All Cryogenic Microwave Oscillator Based on a Superconductor Resonator

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