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US 2003/0189466 A1Published application
LC oscillator with small oscillation frequency variations
AssigneeRenesas Technology Corp.
InventorMasahiro Kitamura
Life of this patent
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AssigneeRenesas Technology Corp.
InventorMasahiro Kitamura
Estimating the term…
An LC oscillator includes inductors, a variable capacitor section, an adjusting section for varying the capacitance of the variable capacitor section in response to a control voltage supplied in accordance with a digital control signal, and an additional variable capacitor section for varying its capacitance in response to an additional control voltage. The variable capacitor section includes first to Kth capacitors, where K is an integer greater than one. The adjusting section includes buffer section, each of which selectively generates one of a first voltage and a second voltage lower than the first voltage in response to a kth bit of the digital control signal, where k is an integer varying from one to K, thereby generating first to Kth control voltages to be supplied to the first to Kth capacitors.
An LC oscillator that varies its oscillation frequency between a predetermined maximum oscillation frequency and minimum oscillation frequency, said LC oscillator comprising:
An LC oscillator that varies its oscillation frequency between a predetermined maximum oscillation frequency and minimum oscillation frequency, said LC oscillator comprising:
Dependencies are inferred from the claim text.