Oscillator phase noise using active device stacking

摘要

An integrated electronic circuit is provided. The integrated electronic circuit includes a transconductance cell formed from transconductance cell devices. The integrated electronic circuit further includes active and passive decoupling circuits. The integrated electronic circuit also includes an oscillator having a tank that is direct current decoupled from the transconductance cell devices using the active and passive decoupling circuits to increase voltage swing and decrease phase noise of the oscillator.

主权项

1. An integrated electronic circuit, comprising:
a transconductance cell formed from transconductance cell devices; active and passive decoupling circuits, wherein the active decoupling circuits include at least two active devices and at least four capacitive devices, wherein a first one of the at least four capacitive devices is connected across the non-current control terminals of a first one of the at least two active devices, and a second one of the at least four capacitive devices is connected across the non-current control terminals of a second one of the at least two active devices; and an oscillator having a tank that is direct current decoupled from the transconductance cell devices using the active and passive decoupling circuits to increase voltage swing and decrease phase noise of the oscillator, where the current control terminal of the at least two active devices are not coupled to the tank circuit, and wherein the transconductance cell devices are direct-current decoupled from the tank by a third and a fourth capacitive device of the at least four capacitive devices connected between the tank and the transconductance cell devices.