VOLTAGE CONTROLLED OSCILLATOR

摘要

A voltage controlled oscillator (VCO) comprising a first supply node, a second supply node, an oscillation transistor, a biasing network, an output node and a feedback network is described. The VCO is be powered by a supply voltage applied across the first and second supply nodes. The oscillation transistor and the biasing network are connected in series between the first supply node and the second supply node. The output node is connected to the oscillation transistor so as to deliver an oscillatory output signal. The feedback network provides an oscillatory feedback signal from the output node to the biasing network. The feedback network comprises a capacitive element and a transmission line connected in series for transferring the feedback signal. The VCO may be integrated in a radar device, for example.

主权项

1. A voltage-controlled oscillator (VCO) having a voltage controlled oscillator frequency,
wherein the VCO comprises a first supply node, a second supply node, an oscillation transistor, a biasing network, an output node, and a feedback network; the VCO is arranged to be powered by a supply voltage applied across the first and second supply nodes; the oscillation transistor and the biasing network are connected in series between the first supply node and the second supply node; the output node is connected to the oscillation transistor so as to provide an oscillatory output signal which has said oscillator frequency; the feedback network is arranged to provide an oscillatory feedback signal from the output node to the biasing network; and the feedback network comprises a capacitive element and a transmission line connected in series for transferring the feedback signal.