System and method using temperature tracking for a controlled oscillator
AssigneeSamsung Electronics Co., Ltd.
InventorsWing Fai LOKE, Chih-Wei Yao
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Abstract
A system using temperature tracking for a controlled oscillator (CO) is provided. The system includes at least one coarse tuning capacitor circuit including a plurality of selectable coarse tuning capacitors operable in at least three modes of operation, thereby allowing switching between each coarse capacitor of the plurality of selectable coarse capacitors when a selected coarse tuning capacitor has reached one of its high tuning range and low tuning range.
Claims19
A system using temperature tracking for a controlled oscillator (CO), the system comprising:
- at least one coarse tuning capacitor circuit including a plurality of selectable coarse tuning capacitors operable in at least three modes of operation, thereby allowing switching between each coarse capacitor of the plurality of coarse capacitors when a selected coarse tuning capacitor has reached one of its high tuning range and low tuning range,
- wherein if during temperature tracking of the CO a coarse tuning capacitor selected for operation in a Tunable-Cap mode reaches one of an upper limit of its tuning range and a lower limit of its tuning range, changing a mode of operation of the coarse tuning capacitor selected for operation in the Tunable-Cap mode and selecting another coarse tuning capacitor for operation in the Tunable-Cap mode of operation based on the limit that was reached by a previously selected coarse tuning capacitor.
A method using temperature tracking for a controlled oscillator (CO), the method comprising:
- electrically connecting a temperature tracking circuit to at least one coarse tuning capacitor circuit including a plurality of selectable coarse tuning capacitors operable in at least an On-Cap mode of operation, an Off-Cap mode of operation, and a Tunable-Cap mode of operation;
- selecting one of the coarse tuning capacitors for operation in the Tunable-Cap mode of operation;
- and
- if during temperature tracking of the CO the coarse tuning capacitor selected for operation in the Tunable-Cap mode reaches one of an upper limit of its tuning range and a lower limit of its tuning range, changing a mode of operation of the coarse tuning capacitor selected for operation in the Tunable-Cap mode and selecting another coarse tuning capacitor for operation in the Tunable-Cap mode of operation based on the limit that was reached by the previously selected coarse tuning capacitor.
A system using temperature tracking for a controlled oscillator (CO), the system comprising:
- at least one coarse tuning capacitor circuit including a plurality of selectable coarse tuning capacitors operable in at least three modes of operation, thereby allowing switching between each coarse capacitor of the plurality of coarse capacitors when a selected coarse tuning capacitor has reached one of its high tuning range and low tuning range,
- wherein the at least three modes of operation includes an On-Cap mode of operation, an Off-Cap mode of operation and a Tunable-Cap mode of operation, and
- wherein, at any given time, only one coarse tuning capacitor is selected in the Tunable-Cap mode of operation while the other coarse tuning capacitors are configured in one of the On-Cap and Off-Cap modes of operation.
Dependencies are inferred from the claim text.