Apparatus and methods for adjusting voltage controlled oscillator gain
First Claim
1. A method of compensating for variations in a voltage-controlled oscillator (VCO) gain, the method comprising:
- selecting a VCO gain adjustment model based on a VCO gain indicator and at least one threshold value stored in a memory;
obtaining VCO gain adjustment model parameters from the memory;
computing a charge pump control value using the VCO gain adjustment model parameters; and
dynamically compensating for VCO gain variations using the charge pump control value.
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Abstract
Apparatus and methods for adjusting a gain of an electronic oscillator, such as a voltage-controlled oscillator (VCO), are disclosed. In one aspect, an apparatus for compensating for VCO gain variations includes a charge pump controller. The charge pump controller can be configured to select a VCO gain model based on a comparison of a VCO gain indicator and a threshold value stored in a memory, obtain VCO gain model parameters from the memory corresponding to the selected VCO gain model, and compute a charge pump current control value using the VCO gain model parameters. The charge pump current control value can be used to compensate for VCO gain variations.
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Citations
25 Claims
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1. A method of compensating for variations in a voltage-controlled oscillator (VCO) gain, the method comprising:
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selecting a VCO gain adjustment model based on a VCO gain indicator and at least one threshold value stored in a memory; obtaining VCO gain adjustment model parameters from the memory; computing a charge pump control value using the VCO gain adjustment model parameters; and dynamically compensating for VCO gain variations using the charge pump control value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising
a charge pump controller configured to select a VCO gain model based on a comparison of a VCO gain indicator and at least one threshold value stored in a memory; -
obtain VCO gain model parameters, from the memory, corresponding to the selected VCO gain model; and compute a charge pump control value using the VCO gain model parameters. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus comprising:
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means for selecting a VCO gain model based on a comparison of a VCO gain indicator and at least one threshold value stored in a memory; means for obtaining VCO gain model parameters from the memory corresponding to the selected VCO gain model; and means for computing a charge pump current control value using the VCO gain model parameters. - View Dependent Claims (21)
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22. An apparatus comprising a charge pump controller, the charge pump current controller including:
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a memory configured to store VCO gain model parameters and threshold values; and an arithmetic logic unit configured to select a VCO gain model based on a comparison of a VCO gain indicator and at least one threshold value stored in the memory;
obtain VCO gain model parameters, from the memory, corresponding to the selected VCO gain model; and
compute a charge pump control value using the VCO gain model parameters. - View Dependent Claims (23, 24, 25)
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Specification