Patent ID: 6198357
Filing Date: 2001-03-06
Classification: G06K,H01Q,H03L

Abstract:
A stage for a voltage controlled oscillator, the stage comprising:a first p-channel transistor having a gate defining a control node, having a source adapted to be connected to a supply voltage, and having a drain;a second p-channel transistor having a gate connected to the control node, having a source connected to the supply voltage, and having a drain;a first n-channel transistor having a gate defining a first input, having a drain connected to the drain of the first p-channel transistor and defining a first node, and having a source;a second n-channel transistor having a gate defining a second input, having a drain connected to the drain of the second p-channel transistor and defining a second node, and having a source;a current source connected to the sources of the first and second n-channel transistors directing current from the sources of the first and second n-channel transistors;a first resistor connected between the supply voltage and the drain of the first n-type transistor;a second resist or connected between the supply voltage and drain of the second n-type transistor;a first source follower having an input connected to the first node and having an output defining a first output of the stage; anda second source follower having an input connected to the second node and having an output defining a second output of the stage.