Variable inductor, and oscillator and communication system...

Details Variable inductor, and oscillator and communication system... Variable inductor, and oscillator and communication system...

2011-03-08

2011-03-08

Pascal, Robert (Department: 2817)

Oscillators

With frequency adjusting means

Variable inductance device

C331S1170FE, C331S167000

Reexamination Certificate

active

07902934

ABSTRACT:
There are provided a variable inductor with little degradation in quality factor, and an oscillator and a communication system using the variable inductor. An inductance controller comprising a reactance device with a variable device value, such as, for example, a variable capacitor, is connected to a secondary inductor, magnetically coupled to a primary inductor through mutual inductance. The inductance controller is provided with an inductance control terminal for receiving a control signal for controlling capacitance of the variable capacitor. Inductance of the primary inductor is varied by varying the capacitance by the control signal.

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