The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2018
Filed:
May. 05, 2017
Applicant:
Witricity Corporation, Watertown, MA (US);
Inventor:
Conor Joseph Rochford, Boston, MA (US);
Assignee:
WITRICITY CORPORATION, Watertown, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/63 (2006.01); H02M 7/219 (2006.01); G05F 1/10 (2006.01); G05F 1/30 (2006.01); G05F 1/613 (2006.01); H02M 7/23 (2006.01); H02M 7/25 (2006.01); H03F 3/217 (2006.01); H02J 50/12 (2016.01); H02J 50/80 (2016.01); H02M 7/48 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 7/219 (2013.01); G05F 1/10 (2013.01); G05F 1/30 (2013.01); G05F 1/613 (2013.01); H02J 50/12 (2016.02); H02J 50/80 (2016.02); H02M 7/23 (2013.01); H02M 7/25 (2013.01); H03F 3/2176 (2013.01); H02M 2001/0093 (2013.01); H02M 2007/4818 (2013.01);
Abstract
Methods and apparatus provide compensation for impedance changes in a network energized by an amplifier, such as a class E amplifier. In embodiments, bus voltage amplifier fundamental AC output voltage can be used to generate a feedback signal for adjusting impedance of one or more components in the network. In embodiments, the amplifier fundamental AC output voltage is determined from current to the load, wherein the load is coupled to the amplifier by an LCL impedance matching network.