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US 6,597,248 B2Granted
Voltage-controlled oscillator
AssigneeNEC Electronics Corporation
InventorKatsunori Shirai
Life of this patent
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Abstract
A voltage-controlled oscillator in a phase-locked loop includes an LC oscillator. Control inductors are disposed of in the proximity of oscillator inductors, respectively. The control inductors are connected to a current source. By applying a control current to the control inductors, a mutual inductance is respectively induced between the oscillator inductors and the control inductors.
Claims6
A voltage-controlled oscillator, comprising:
- an LC oscillator including oscillator inductors;
- and
- a plurality of control inductors arranged in the vicinity of each of said oscillator inductors,
- wherein a mutual inductance is induced between said oscillator inductors and said control inductors by supplying a control current to said control inductors.
1 more element
Dependencies are inferred from the claim text.