Voltage-controlled oscillator
AssigneeAgency for Science, Technology and Research
InventorPradeep Khannur
Life of this patent
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Abstract
A voltage-controlled oscillator for generating differential output is disclosed. The voltage-controlled oscillator comprises a Colpitts oscillator having a first inductor and a capacitive divider having at least two capacitors connected in series. A varactor is connected in series with the capacitive divider and to a reference voltage, and a second inductor is mutually coupled to the first inductor for providing the differential output. A second inductor is substantially centrally tapped and connected to the reference voltage for providing a substantially balanced output. The operating frequency of the voltage-controlled oscillator is dependent on an applicable potential difference across the varactor.
Claims16
A voltage-controlled oscillator for generating differential output, the voltage-controlled oscillator comprising:
- a Colpitts oscillator having a first inductor and a capacitive divider having at least two capacitors connected in series;
- a varactor connected in series with the capacitive divider and to a reference voltage;
- and
- a second inductor mutually coupled to the first inductor for providing the differential output, the second inductor being substantially centrally tapped and connected to the reference voltage for providing a substantially balanced output,
- wherein the operating frequency of the voltage-controlled oscillator is dependent on an applicable potential difference across the varactor.
Dependencies are inferred from the claim text.