VCO with independently controllable parameters
AssigneeGlacier Microelectronics
InventorThomas M. Luich
Life of this patent
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Abstract
This disclosure relates to a programmable wideband, LC Tuned, Voltage Controlled Oscillator with continuous center frequency select, and independent configuration of amplitude and tuning gain. The programmability can be via on chip non-volatile memory, or through data shifted into the part and stored via a data bus.
Claims19
A method of programming a voltage controlled oscillator having programmable parameters including at least two of the following:
- center frequency, voltage tuning gain, and output stage drive strength;
- the method comprising the steps of:
- determining a first programming value for a first one of said parameters;
- and
- determining a second programming value for a second one of said parameters in view of the first programming value
A method of programming a voltage controlled oscillator having programmable parameters including at least center frequency and voltage tuning gain, the method comprising the steps of:
- determining a first programming value for center frequency;
- and
- determining a second programming value for voltage tuning gain taking into account the first programming value;
- wherein the first programming value and the second programming value together result in a voltage tuning gain of substantially a predetermined value.
A voltage controlled oscillator comprising:
- an oscillator;
- a fine frequency select stage coupled to the oscillator and controlled in accordance with a digital address word applied thereto;
- and
- a voltage tuning stage coupled to the fine frequency select stage and comprising at least one linear array of varactors.
A voltage tuning stage for use with a voltage controlled oscillator, the voltage tuning stage comprising:
- at least one linear array of varactors;
- and
- inputs for receiving a digital address word, the voltage tuning stage being controlled in accordance with a digital address word applied thereto.
Dependencies are inferred from the claim text.