Integrated tunable resonance circuit

Details Integrated tunable resonance circuit Integrated tunable resonance circuit

2007-05-17

2009-12-15

Pascal, Robert (Department: 2817)

Oscillators

With frequency adjusting means

Variable inductance device

C331S03600C, C331S17700V, C331S179000, C331S167000

Reexamination Certificate

active

07633352

ABSTRACT:
An integrated tunable resonance circuit is provided for providing a high-frequency output signal with a frequency dependent on a control signal, comprising a parallel resonance circuit with a first inductive element and an output for providing the high-frequency output signal, a switching unit with a controlled path, and a control terminal for switching between states, whereby the switching unit is designed to exhibit a predominantly capacitive behavior in a first state and a predominantly resistive behavior in a second state, whereby the resonance circuit is designed to drive the control terminal of the switching unit as a function of the control signal. The resonance circuit has a second inductive element which can be mutually coupled to the first inductive element, whereby the controlled path is connected parallel to the second inductive element. The invention relates furthermore to a voltage-controlled oscillator and to an integrated circuit.

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