US 12,007,453 B2
Magnetic field generator for a magnetic field measurement system
Jamu Alford, Simi Valley, CA (US); Michael Henninger, Austin, TX (US); Dakota Blue Decker, Culver City, CA (US); Stephen Garber, Santa Monica, CA (US); Jeffery Kang Gormley, Chatsworth, CA (US); Scott Michael Homan, Culver City, CA (US); Teague Lasser, Los Angeles, CA (US); Micah Ledbetter, Sunnyvale, CA (US); Jerry Leung, Marina Del Rey, CA (US); Hooman Mohseni, Wilmette, IL (US); Ethan Pratt, Santa Clara, CA (US); Scott Jeremy Seidman, Glenview, IL (US); and Benjamin Siepser, Los Angeles, CA (US)
Assigned to HI LLC, Los Angeles, CA (US)
Filed by HI LLC, Los Angeles, CA (US)
Filed on Apr. 30, 2020, as Appl. No. 16/862,919.
Claims priority of provisional application 62/967,787, filed on Jan. 30, 2020.
Claims priority of provisional application 62/967,797, filed on Jan. 30, 2020.
Claims priority of provisional application 62/967,818, filed on Jan. 30, 2020.
Claims priority of provisional application 62/967,803, filed on Jan. 30, 2020.
Claims priority of provisional application 62/967,813, filed on Jan. 30, 2020.
Claims priority of provisional application 62/967,804, filed on Jan. 30, 2020.
Claims priority of provisional application 62/967,823, filed on Jan. 30, 2020.
Claims priority of provisional application 62/933,174, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,169, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,287, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,160, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,289, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,170, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,167, filed on Nov. 8, 2019.
Claims priority of provisional application 62/933,288, filed on Nov. 8, 2019.
Claims priority of provisional application 62/842,818, filed on May 3, 2019.
Prior Publication US 2020/0350106 A1, Nov. 5, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H05K 9/00 (2006.01); A61B 5/00 (2006.01); A61B 5/05 (2021.01); A61B 5/245 (2021.01); G01R 33/00 (2006.01); G01R 33/025 (2006.01); G01R 33/032 (2006.01); G01R 33/09 (2006.01); G01R 33/26 (2006.01); H01F 7/20 (2006.01); H01F 27/28 (2006.01); H01F 27/36 (2006.01); H05K 1/18 (2006.01)
CPC G01R 33/0082 (2013.01) [A61B 5/0077 (2013.01); A61B 5/05 (2013.01); A61B 5/245 (2021.01); A61B 5/4064 (2013.01); A61B 5/6802 (2013.01); A61B 5/6803 (2013.01); G01R 33/0011 (2013.01); G01R 33/0017 (2013.01); G01R 33/0047 (2013.01); G01R 33/007 (2013.01); G01R 33/025 (2013.01); G01R 33/032 (2013.01); G01R 33/095 (2013.01); G01R 33/26 (2013.01); H01F 7/20 (2013.01); H01F 27/2804 (2013.01); H01F 27/36 (2013.01); H05K 1/18 (2013.01); H05K 9/0071 (2013.01); A61B 2562/0223 (2013.01); A61B 2562/04 (2013.01); A61B 2562/18 (2013.01); A61B 2562/222 (2013.01); A61B 2562/227 (2013.01); H01F 27/2866 (2013.01); H05K 2201/10151 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A magnetic field generator comprising:
a plurality of conductive windings comprising:
a first conductive winding arranged in a first plane, and
a second conductive winding arranged in a second plane that is substantially parallel to the first plane,
wherein:
the plurality of conductive windings are configured to generate, when supplied with a drive current, a first component of a compensation magnetic field, the first component of the compensation magnetic field being configured to actively shield a magnetic field sensing region located between the first conductive winding and the second conductive winding from ambient background magnetic fields along a first axis that is substantially orthogonal to the first plane and the second plane;
a winding pattern of the first conductive winding includes a first counter-winding configured to reduce a spatial extent of a first fringe magnetic field generated by the first conductive winding; and
a winding pattern of the second conductive winding includes a second counter-winding configured to reduce a spatial extent of a second fringe magnetic field generated by the second conductive winding.