Patent ID: 8385474
Filing Date: 2013-02-26
Classification: H03L

Abstract:
1. An apparatus for providing a signal, comprising: an oscillator circuit configured to provide an oscillating signal; a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the reactive circuit comprises a variable capacitive element that provides the variable amount of capacitance based on the control signal, a variable inductive element that provides the variable amount of inductance based on the control signal, or variable capacitive and inductive elements that provide the variable amounts of capacitance and inductance based on the control signal; and a control circuit configured to temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude.