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Oscillator Topology and Decoupling Method Based on Fully Decoupled LC Resonant Tank

A resonant circuit and oscillator technology, applied in the field of information processing

Active Publication Date: 2016-01-06
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, in almost all technologies, the breakdown voltage of active devices is much lower than that of passive devices

Method used

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  • Oscillator Topology and Decoupling Method Based on Fully Decoupled LC Resonant Tank
  • Oscillator Topology and Decoupling Method Based on Fully Decoupled LC Resonant Tank
  • Oscillator Topology and Decoupling Method Based on Fully Decoupled LC Resonant Tank

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Embodiment Construction

[0026] The present principles are directed to a fully decoupled inductor-capacitor (LC) resonant tank based oscillator topology for low phase noise and high oscillation amplitude applications.

[0027] According to one embodiment of the principles of the present invention, we propose a way for operating an oscillator such that the amplitude of the oscillation is not limited by the breakdown voltage of the active devices. Conversely, the LC tank is decoupled from the active components, and the coupling ratio between the LC tank and the active components is set such that the oscillation amplitude reaches a maximum value determined only by the breakdown of the passive components. For example, we envision a situation where the oscillator uses active devices with a breakdown voltage of 1V to safely achieve a peak-to-peak differential amplitude of 40V.

[0028] According to one embodiment of the principles of the present invention, we subject the active devices within the oscillator...

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Abstract

The present disclosure relates to oscillator topologies and decoupling methods based on fully decoupled LC resonant tanks. A resonant tank based oscillator is provided. The oscillator includes one or more active devices, one or more passive devices, and a resonant circuit decoupled from the active device using at least one of the one or more passive devices. The coupling ratio between the resonant circuit and the one or more active components is set such that the maximum value of the oscillation amplitude of the resonant circuit is only defined based on the breakdown of the one or more passive components.

Description

technical field [0001] The present invention relates generally to information processing, and in particular to a fully decoupled LC tank based oscillator topology for low phase noise and high oscillation amplitude applications. Background technique [0002] The phase noise of an oscillator is a critical performance metric in many wireless and wired communication applications, radar, sensors, imagers, data converters, and the like. The performance of any clocked system will benefit from a lower noise oscillator. One way to reduce the phase noise of an oscillator is to increase the amplitude of the oscillation. In a given technology, the maximum amplitude is determined by the breakdown of the active device (FET, BJT or other type of device). The phase noise of the oscillator can also be reduced by using lower noise devices or devices with higher breakdown, by lowering the temperature, etc. [0003] A general representation of oscillator noise is given by the Leeson formula ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03B5/18
CPCH03B5/1228H03B5/1215H03B5/1278H03B5/1209
Inventor B·萨杜J-O·普鲁查特S·K·雷诺德A·V·里尔亚科夫J·A·蒂尔诺
Owner INT BUSINESS MASCH CORP