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US 12,334,940 B2Granted
Stable scalable digital frequency reference
AssigneeNational Research Council of Canada
InventorBrent Carlson
Life of this patent
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Abstract
A method for timing aperture synthesis arrays comprising the steps of: (a) coupling a plurality of independent crystal oscillators, each of the plurality of independent crystal oscillators having a unique output frequency; (b) digitally synchronizing the plurality of independent crystal oscillators in phase; (c) combining the unique output frequencies; and (d) obtaining a stable digital reference signal for timing at least one remote radio device of the aperture synthesis array.
Claims6
A method for timing aperture synthesis arrays comprising
- (a) coupling a plurality of three or more independent crystal oscillators, each of the plurality of independent crystal oscillators having a unique output frequency;
- (b) digitally synchronizing the plurality of three or more independent crystal oscillators in phase;
- (c) combining the unique output frequencies;
- and
- (d) obtaining a stable digital reference signal for timing at least one remote radio device.
2 more elements
Dependencies are inferred from the claim text.