US 2011/0084769 A1 · Estimation and Compensation of Oscillator Nonlinearities

Abstract

A device comprises an oscillator circuit, a control circuit, a frequency detector circuit, and a processor circuit. The oscillator circuit comprises a frequency control input and is configured to output an oscillator signal. The frequency of the oscillator signal depends on an input signal applied to the frequency control input. The control circuit is configured to apply a first input signal value, a second input signal value, and a third input signal value to the frequency control input. The frequency detector circuit is configured to detect the first frequency value of the oscillator signal when the first input signal value is applied to the frequency control input, a second frequency value of the oscillator signal when the second input signal value is applied to the frequency control input, and a third frequency value of the oscillator signal when the third input signal value is applied to the frequency control input. The processor circuit is configured to calculate, on the basis of the first input signal value, the second input signal value, the third input signal value, the first frequency value, the second frequency value, and the third frequency value, a second order coefficient of a polynomial oscillator characteristic relating values of the frequency of the oscillator signal to values of the input signal.

Claims26

Dependent claims

A device, comprising:

an oscillator circuit comprising a frequency control input and configured to output an oscillator signal, a frequency of the oscillator signal depending on an input signal applied to the frequency control input;
a control circuit configured to apply a first input signal value, a second input signal value, and a third input signal value to the frequency control input;
a frequency detector circuit configured to detect a first frequency value of the oscillator signal when the first input signal value is applied to the frequency control input, a second frequency value of the oscillator signal when the second input signal value is applied to the frequency control input, and a third frequency value of the oscillator signal when the third input signal value is applied to the frequency control input;
and
a processor circuit configured to calculate, on the basis of the first input signal value, the second input signal value, the third input signal value, the first frequency value, the second frequency value, and the third frequency value, a second order coefficient of a polynomial oscillator characteristic relating values of the frequency of the oscillator signal to values of the input signal.

2 more elements

Dependencies are inferred from the claim text.

Estimation and Compensation of Oscillator Nonlinearities

Life of this patent

Estimation and Compensation of Oscillator Nonlinearities

Life of this patent

Abstract

Claims26