US 11,888,484 B2
Circuitry having fully connected ring oscillators
Hyung-Il Kim, Minneapolis, MN (US); William Moy, Minneapolis, MN (US); and Hao Lo, Minneapolis, MN (US)
Assigned to REGENTS OF THE UNIVERSITY OF MINNESOTA, Minneapolis, MN (US)
Filed by Regents of the University of Minnesota, Minneapolis, MN (US)
Filed on Oct. 28, 2022, as Appl. No. 17/975,825.
Claims priority of provisional application 63/272,795, filed on Oct. 28, 2021.
Claims priority of provisional application 63/297,364, filed on Jan. 7, 2022.
Prior Publication US 2023/0132603 A1, May 4, 2023
Int. Cl. H03K 3/03 (2006.01); H03K 5/19 (2006.01); G06N 10/00 (2022.01); B82Y 10/00 (2011.01); G06N 5/04 (2023.01); G06F 17/11 (2006.01)
CPC H03K 3/0315 (2013.01) [B82Y 10/00 (2013.01); G06F 17/11 (2013.01); G06N 5/04 (2013.01); G06N 10/00 (2019.01); H03K 5/19 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fully connected ring oscillator circuit comprising:
a plurality of first ring oscillator loops each extending along a first axis;
a plurality of second ring oscillator loops each extending along a second axis that is transverse to the first axis and intersecting the first ring oscillator loops;
a plurality of ring oscillators each comprising one of the first ring oscillator loops connected to one of the second ring oscillator loops through a strong coupling, each ring oscillator producing an oscillating signal; and
a plurality of coupled ring oscillators each comprising two of the ring oscillators connected to each other through a programmable weighted coupling block,
wherein each of the programmable weighted coupling blocks is configured to selectively apply to the corresponding coupled ring oscillator a positive weight coupling that drives the oscillating signals of the ring oscillators of the coupled ring oscillator toward oscillating in a same phase with each other, and a negative weight coupling that drives the oscillating signals of the ring oscillators of the coupled ring oscillator toward oscillating in an opposite phase with each other.