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US 2006/0077012 A1Published application
VCO circuit with board tunning range and amplitude control
AssigneeWinbond Electronics Corp.
InventorsBingxue Shi, Jiwei Chen
Life of this patent
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Abstract
A voltage-controlled oscillator circuit. A pair of inductors are coupled to a first power source. A pair of capacitors respectively coupled between a variable resistor and the pair of inductors in serial. A pair of first switches respectively coupled between the pair of capacitors and a second power source. The first switch of the pair has a first control gate coupled to a connection point of the other first switch and the corresponding capacitor.
Claims12
A voltage-controlled oscillator circuit, comprising:
- a pair of inductors coupled to a first power source;
- a variable resistor;
- a pair of capacitors respectively coupled between the variable resistor and the pair of inductors in serial;
- and
- a pair of first switches respectively coupled between the pair of capacitors and a second power source, wherein the first switch of the pair comprises a first control gate coupled to a connection point of the other first switch and the corresponding capacitor.
2 more elements
Dependencies are inferred from the claim text.