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US 2006/0232348 A1Published application
Inductor unit and oscillator using the inductor unit
OwnerTakuo Hinoinventor
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Abstract
Functionality and performance of a voltage-controlled oscillator are improved by continuously controlling inductor output by a control signal. Having a first inductor, a current detection circuit that detects current flow to the first inductor, a current source 4 for generating a current signal based on the detected current, and a second inductor to which the current signal is applied, the first inductor and second inductor are disposed to a predetermined magnetically coupled position for setting the inductance of the first inductor as desired.
Claims16
An inductor unit comprising:
- a first inductor;
- a current signal generator operable to detect an electric signal denoting current flowing to the first inductor or the voltage at both ends of the first inductor, and to generate a current signal based on the electric signal;
- and
- a second inductor that receives the current signal;
- wherein the first inductor and second inductor are disposed to a predetermined magnetically coupled position and the inductance of the first inductor is set desirably.
2 more elements
An oscillator comprising:
- an inductor unit comprising
- a first inductor;
- a current signal generator operable to detect an electric signal denoting current flowing to the first inductor or the voltage at both ends of the first inductor, and to generate a current signal based on the electric signal;
- and
- a second inductor that receives the current signal;
- wherein the first inductor and second inductor are disposed to a predetermined magnetically coupled position and the inductance of the first inductor is set desirably;
- and
- a variable capacitance device connected to the inductor unit;
- wherein the oscillator oscillates at an oscillation frequency determined by the inductance of the inductor unit and the capacitance of the variable capacitance device.
6 more elements
Dependencies are inferred from the claim text.