Patent ID: 8058938

Claim:
A voltage controlled oscillator (VCO), comprising: a first and a second n-type transistor, wherein the input of the first n-type transistor is connected to the power-facing connection of the second n-type transistor and the input of the second n-type transistor is connected to the power-facing connection of the first n-type transistor; a first and a second p-type transistor, wherein the input of the first p-type transistor is connected to the ground-facing connection of the second p-type transistor, the input of the second p-type transistor is connected to the ground-facing connection of the first p-type transistor, the ground-facing connection of the first n-type transistor is connected to the power-facing connection of the first p-type transistor, and the ground-facing connection of the second n-type transistor is connected to the power-facing connection of the second p-type transistor; a first capacitive element, wherein a first side of the first capacitive element is connected to the power-facing connection of the first n-type transistor and a second side of the first capacitive element is connected to the ground-facing connection of the first p-type transistor; a second capacitive element, wherein a first side of the second capacitive element is connected to the power-facing connection of the second n-type transistor and a second side of the second capacitive element is connected to the ground-facing connection of the second p-type transistor; a bridge connecting (1) the ground-facing connection of the first n-type transistor and power-facing connection of the first p-type transistor to (2) the ground-facing connection of the second n-type transistor and power-facing connection of the second p-type transistor; a first inductive element, wherein a first side of the first inductive element is connected to the power-facing connection of the second n-type transistor and a second side of the first inductive element is connected to the power-facing connection of the first n-type transistor; a first capacitor bank, wherein a first side of the first capacitor bank is connected to the power-facing connection of the second n-type transistor and a second side of the first capacitor bank is connected to the power-facing connection of the first n-type transistor; a second inductive element, wherein a first side of the second inductive element is connected to the ground-facing connection of the second p-type transistor and a second side of the second inductive element is connected to the ground-facing connection of the first p-type transistor; a second capacitor bank, wherein a first side of the second capacitor bank is connected to the ground-facing connection of the second p-type transistor and a second side of the second capacitor bank is connected to the ground-facing connection of the first p-type transistor.