VOLTAGE-CONTROLLED OSCILLATOR

摘要

A voltage-controlled oscillator includes two first inductors having a common node, two varactors receiving a first bias voltage and respectively coupled to the first inductors, first and second transistors each having a first terminal coupled to a respective one of the varactors, and two second inductors. One of the second inductors is coupled between the control terminal of the first transistor and the first terminal of the second transistor. The other second inductor is coupled between the control terminal of the second transistor and the first terminal of the first transistor. An oscillatory signal pair is provided at the first terminals of the first and second transistors.

主权项

1. A voltage-controlled oscillator comprising:
two first inductors having a common node, each of said first inductors having a first terminal coupled to said common node, and a second terminal; two varactors, each having a first terminal disposed to receive a first bias voltage, a second terminal coupled to said second terminal of a respective one of said first inductors, and a capacitance associated with a magnitude of the first bias voltage; a first transistor and a second transistor, each having a first terminal coupled to said second terminal of a respective one of said varactors, a second terminal and a control terminal; and two second inductors, one of which is coupled between said control terminal of said first transistor and said first terminal of said second transistor, and the other one of which is coupled between said control terminal of said second transistor and said first terminal of said first transistor; wherein a first oscillatory signal is provided at said first terminal of said first transistor, and a second oscillatory signal is provided at said first terminal of said second transistor.