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US 10,763,864 B2Granted
Voltage-controlled-oscillator circuit
AssigneeNXP USA, Inc.
InventorsBirama Goumballa, Pierre Savary, Cristian Pavao Moreira
Life of this patent
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Abstract
The disclosure relates to voltage-controlled-oscillator circuit comprising: a charge-pump configured to generate a tuning-voltage, the tuning-voltage having a minimum-operating-voltage; an offset-voltage-source configured to generate an offset-voltage in accordance with the minimum-operating-voltage; and a voltage-controlled-oscillator, VCO, configured to provide an oscillator frequency in accordance with the tuning-voltage and the offset-voltage.
Claims20
A voltage-controlled-oscillator circuit comprising:
- a charge-pump configured to generate a tuning-voltage, the tuning-voltage having a minimum-operating-voltage;
- an offset-voltage-source configured to generate an offset-voltage in accordance with the minimum-operating-voltage;
- and
- a voltage-controlled-oscillator, VCO, configured to provide an oscillator frequency in accordance with the tuning-voltage and the offset-voltage, the voltage-controlled-oscillator having a minimum-VCO-voltage, and the offset-voltage is based on a difference between the minimum-VCO-voltage and the minimum-operating-voltage of the tuning-voltage.
1 more element
A phase-locked loop (PLL) system comprising:
- a phase-comparator;
- and
- a voltage-controlled-oscillator circuit comprising:
- a charge-pump configured to generate a tuning-voltage, the tuning-voltage having a minimum-operating-voltage;
- an offset-voltage-source configured to generate an offset-voltage in accordance with the minimum-operating-voltage;
- and
- a voltage-controlled-oscillator, VCO, configured to provide an oscillator frequency in accordance with the tuning-voltage and the offset-voltage, the VCO having a minimum-VCO-voltage, and the offset-voltage is based on a difference between the minimum-VCO-voltage and the minimum-operating-voltage of the tuning-voltage;
- wherein the charge-pump is configured to provide the tuning-voltage based on an input-voltage received by the charge pump, and wherein the input-voltage is based on an output-signal from the phase-comparator.
5 more elements
A radar transceiver comprising:
- a phase-comparator;
- and
- a voltage-controlled-oscillator circuit comprising:
- a charge-pump configured to generate a tuning-voltage, the tuning-voltage having a minimum-operating-voltage;
- an offset-voltage-source configured to generate an offset-voltage in accordance with the minimum-operating-voltage;
- and
- a voltage-controlled-oscillator, VCO, configured to provide an oscillator frequency in accordance with the tuning-voltage and the offset-voltage, wherein the VCO has a minimum-VCO-voltage, and wherein the offset-voltage is based on a difference between the minimum-VCO-voltage and the minimum-operating-voltage of the tuning-voltage;
- wherein the charge-pump is configured to provide the tuning-voltage based on an input-voltage received by the charge-pump, wherein the input-voltage is based on an output-signal from the phase-comparator, and wherein the VCO is configured for operating within either a first frequency band or a second frequency band.
5 more elements
A voltage-controlled-oscillator circuit comprising:
- a charge-pump configured to generate a tuning-voltage, the tuning-voltage having a minimum-operating-voltage;
- an offset-voltage-source configured to generate an offset-voltage in accordance with the minimum-operating-voltage;
- and
- a voltage-controlled-oscillator, VCO, configured to provide an oscillator frequency in accordance with the tuning-voltage and the offset-voltage, the voltage-controlled-oscillator having a maximum-VCO-voltage, the voltage-controlled-oscillator circuit comprising a high-voltage-supply configured to provide a high-voltage to the charge-pump, wherein the high-voltage is based on a sum of the maximum-VCO-voltage and the offset-voltage.
1 more element
A radar transceiver comprising:
- a phase-comparator;
- and
- a voltage-controlled-oscillator circuit comprising:
- a charge-pump configured to generate a tuning-voltage, the tuning-voltage having a minimum-operating-voltage;
- an offset-voltage-source configured to generate an offset-voltage in accordance with the minimum-operating-voltage;
- and
- a voltage-controlled-oscillator, VCO, configured to provide an oscillator frequency in accordance with the tuning-voltage and the offset-voltage, the VCO having a maximum-VCO-voltage, the voltage-controlled-oscillator circuit comprising a high-voltage-supply configured to provide a high-voltage to the charge-pump, wherein the high-voltage is based on a sum of the maximum-VCO-voltage and the offset-voltage;
- wherein the charge-pump is configured to provide the tuning-voltage based on an input-voltage received by the charge-pump, wherein the input-voltage is based on an output-signal from the phase-comparator, and wherein the VCO is configured for operating within either a first frequency band or a second frequency band.
5 more elements
Dependencies are inferred from the claim text.