Controllable oscillating system and related method for selectively adjusting currents passing through cross-coupling driving device

用来产生差分振荡信号的可控振荡系统及相关方法

Abstract

A controllable oscillating system for generating a differential oscillating signal is disclosed. The controllable oscillating system includes an oscillating circuit and a current adjusting device. The oscillating circuit includes a controllable resonator, a cross-coupling driving device, and a current source. The cross-coupling driving device is coupled to the controllable resonator and utilized for driving the controllable resonator to generate the differential oscillating signal. The current source is coupled to the cross-coupling driving device and utilized for providing a first current. The current adjusting device is coupled to the cross-coupling driving device and utilized for adjusting currents passing through the cross-coupling driving device.
本发明提供一种用来产生差分振荡信号的可控振荡系统及相关方法。所述可控振荡系统包含有振荡电路与电流调整装置,其中振荡电路包含有可控谐振器、交叉耦合驱动装置与电流源。交叉耦合驱动装置耦接于可控谐振器,并用来驱动可控谐振器以产生差分振荡信号,而电流源耦接于交叉耦合驱动装置并用来提供第一电流;电流调整装置耦接于交叉耦合驱动装置,并用来调整通过交叉耦合驱动装置的电流。通过本发明的差分振荡信号的可控振荡系统及其相关方法,可用来产生差分振荡信号,并减少相位噪声。

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    CN-103036562-AApril 10, 2013飞思卡尔半导体公司Voltage-controlled oscillators and related systems
    CN-105409114-AMarch 16, 2016高通股份有限公司VCO with linear gain over a very wide tuning range