US 12,334,940 B2
Stable scalable digital frequency reference
Brent Carlson, Penticton (CA)
Assigned to National Research Council of Canada, Ottawa (CA)
Appl. No. 17/776,322
Filed by National Research Council of Canada, Ottawa (CA)
PCT Filed Nov. 13, 2020, PCT No. PCT/CA2020/051560
§ 371(c)(1), (2) Date May 12, 2022,
PCT Pub. No. WO2021/092704, PCT Pub. Date May 20, 2021.
Claims priority of provisional application 62/934,864, filed on Nov. 13, 2019.
Prior Publication US 2022/0399896 A1, Dec. 15, 2022
Int. Cl. H03L 7/099 (2006.01); H03L 7/14 (2006.01); H03L 7/24 (2006.01)
CPC H03L 7/0991 (2013.01) [H03L 7/141 (2013.01); H03L 7/24 (2013.01)] 6 Claims
OG exemplary drawing
 
1. 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.