Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2007-01-30
2007-01-30
Mis, David (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S1170FE, C331S17700V, C331S17700V
Reexamination Certificate
active
11065340
ABSTRACT:
A circuit with variable capacitance includes a capacitance, wherein the capacitance includes a first partial capacitance and a second partial capacitance connected in parallel to the first partial capacitance, wherein a capacitance value of the first partial capacitance depends on a first bias of the partial capacitance, and a capacitance value of the second partial capacitance depends on a second bias of the second partial capacitance. The circuit with variable capacitance further includes a unit for providing the first bias and the second bias. With such a circuit with variable capacitance, it is possible to achieve a more linear and flatter characteristic tuning curve of the circuit with variable capacitance as compared to a conventional circuit with variable capacitance in a simple way.
REFERENCES:
patent: 6445257 (2002-09-01), Cox et al.
patent: 6509805 (2003-01-01), Ochiai
patent: 6563392 (2003-05-01), Gomez et al.
patent: 2002/0008593 (2002-01-01), Gomez et al.
patent: 2005/0088249 (2005-04-01), Oehm et al.
patent: 102 09 517 (2003-06-01), None
Infineon - Technologies AG
Maginot Moore & Beck
Mis David
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