Tuning of a phase-locked loop, and an electronic device
First Claim
1. An electronic device with a phase-locked loop, the device comprising:
- a control block configured to provide a control signal;
a voltage-controlled oscillator configured to receive the control signal and to output an output signal;
a divider block configured to receive the output signal from the voltage-con-trolled oscillator and configured to divide a frequency of the output signal by a predetermined number;
a detector block configured toreceivea frequency-divided output signal from the divider block,receive a reference frequency signal, andprovide a feedback control signal to the voltage-controlled oscillator in the phase-locked loop;
wherein the voltage-controlled oscillator is further configured to include a frequency offset in the voltage-controlled oscillator output signal; and
the control block is further configured to control the frequency offset included in the voltage-controlled oscillator output signal based on fractional division ratio information and actual division state information received from the phase-locked loop.
8 Assignments
0 Petitions
Accused Products
Abstract
There is provided an electronic device comprising: a control block for providing a control signal; a voltage-controlled oscillator; a divider block; a detector block for receiving a frequency-divided output signal from the divider block, for receiving a reference frequency signal and for providing a feedback control signal to the voltage-controlled oscillator. The voltage-controlled oscillator is further configured to include a frequency offset to the voltage-controlled oscillator output signal; and the control block is further configured to control the frequency offset included in the voltage-controlled oscillator output signal on the basis of fractional division ratio information and actual division state information received from the phase-locked loop.
7 Citations
14 Claims
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1. An electronic device with a phase-locked loop, the device comprising:
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a control block configured to provide a control signal; a voltage-controlled oscillator configured to receive the control signal and to output an output signal; a divider block configured to receive the output signal from the voltage-con-trolled oscillator and configured to divide a frequency of the output signal by a predetermined number; a detector block configured to receivea frequency-divided output signal from the divider block, receive a reference frequency signal, and provide a feedback control signal to the voltage-controlled oscillator in the phase-locked loop; wherein the voltage-controlled oscillator is further configured to include a frequency offset in the voltage-controlled oscillator output signal; and the control block is further configured to control the frequency offset included in the voltage-controlled oscillator output signal based on fractional division ratio information and actual division state information received from the phase-locked loop. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tuning method of a phase-locked loop in an electronic device, the method comprising:
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providing, by a control block, a control signal; receiving, by a voltage-controlled oscillator, the control signal and outputting an output signal; receiving, by a divider block, the output signal from the voltage-controlled oscillator and dividing a frequency of the output signal by a predetermined number; receiving, by a detector block, a frequency-divided output signal from the divider block, receiving a reference frequency signal and providing a feedback control signal to the voltage-controlled oscillator in the phase-locked loop; wherein the method further comprises including a frequency offset to the voltage-controlled oscillator output signal by the voltage-controlled oscillator; and controlling, by the control block, the frequency offset included in the voltage-controlled oscillator output signal based on fractional division ratio information and actual division state information received from the phase-locked loop. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An electronic device with a phase-locked loop, the device comprising:
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providing means for providing, by a control block, a control signal; first receiving means for receiving, by a voltage-controlled oscillator, the control signal and outputting an output signal; dividing means for receiving, by a divider block, the output signal from the voltage-con-trolled oscillator and dividing a frequency of the output signal by a predetermined number; detecting means for receiving, by a detector block, a frequency-divided output signal from the divider block, receiving a reference frequency signal and providing a feedback control signal to the voltage-controlled oscillator in the phase-locked loop; wherein the device further comprises including means for including a frequency offset to the voltage-controlled oscillator output signal by the voltage-controlled oscillator; and controlling means for controlling, by the control block, the frequency offset included in the voltage-controlled oscillator output signal based on fractional division ratio information and actual division state information received from the phase-locked loop.
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Specification