US 12,074,459 B2
Classifying and detecting foreign objects using a power amplifier controller integrated circuit in wireless power transmission systems
Cesar A. Johnston, Sunnyvale, CA (US); Sean Nicolson, Irvine, CA (US); Aras Pirbadian, Mission Viejo, CA (US); Deepak Jain, San Ramon, CA (US); Howard Chan, San Jose, CA (US); Erik Heinke, San Jose, CA (US); and Mehdi Khanpour, Irvine, CA (US)
Assigned to Energous Corporation, San Jose, CA (US)
Filed by Energous Corporation, San Jose, CA (US)
Filed on Jun. 27, 2023, as Appl. No. 18/342,332.
Application 18/342,332 is a continuation of application No. 17/493,690, filed on Oct. 4, 2021, granted, now 11,715,980.
Application 17/493,690 is a continuation of application No. 17/026,191, filed on Sep. 19, 2020, granted, now 11,139,699, issued on Oct. 5, 2021.
Claims priority of provisional application 62/903,677, filed on Sep. 20, 2019.
Prior Publication US 2023/0420996 A1, Dec. 28, 2023
Int. Cl. H02J 50/60 (2016.01); G01K 7/22 (2006.01); H02J 50/20 (2016.01)
CPC H02J 50/60 (2016.02) [G01K 7/22 (2013.01); H02J 50/20 (2016.02); H02J 2310/62 (2020.01)] 21 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable storage medium including instructions that, when executed by one or more integrated circuits in electronic communication with a power amplifier of a wireless power transmitter, cause performance of operations including:
in accordance with an indication that the power amplifier is being turned on to initiate transmission of wireless power:
receiving one or more impedance measurements from respective measurement points included within the power amplifier; and
based on the one or more impedance measurements, determining one or more of:
presence of a valid receiver for receiving wireless power from the wireless power transmitter,
presence of a foreign object, and
an adjustment to the transmission of the wireless power to prevent damage to the power amplifier.