USPTO Patent Application: Wireless Power System Load Line Characterization

ChangeBridge: Patent Apps - Power Supply (H02J)

Published July 25th, 2025

Detected March 26th, 2026

Summary

The USPTO has published a new patent application, US20260088659A1, detailing a system for characterizing load lines in wireless power transmitters to ensure stable power negotiation. The application was filed on July 25, 2025, and describes methods for identifying stability boundaries based on system parameters and relative positions between transmitter and receiver.

View original document View source feed page

What changed

The United States Patent and Trademark Office (USPTO) has published patent application US20260088659A1, which describes a novel method for characterizing load lines in wireless power transmitters. The system aims to improve stability and power negotiation by analyzing various wireless power transfer system parameters, including the relative position between the transmitter and receiver. The controller circuitry identifies a stability boundary and operates the transmitter at a power level that maintains stability.

This patent application, filed on July 25, 2025, is primarily of interest to manufacturers and technology companies involved in wireless power systems. While this is a patent application and not a regulation with direct compliance obligations, it signifies potential future technological advancements and intellectual property in the field of wireless power. Companies developing or utilizing such technologies should be aware of this patent filing for competitive intelligence and potential licensing considerations.

Source document (simplified)

← USPTO Patent Applications

SYSTEM LOAD LINE CHARACTERIZATION FOR STABILITY AND POWER NEGOTIATION

Application US20260088659A1 Kind: A1 Mar 26, 2026

Inventors

Ali Abdolkhani, Stephen C Terry, Jerald Polestico Guillermo, Wynand Malan, Alin I Gherghescu

Abstract

A wireless power transmitter can include an inverter that generates an AC voltage; a wireless power transmitting coil that receives the AC voltage from the inverter, the wireless power transmitting coil being couplable to a wireless power receiving coil of a wireless power receiver; and controller circuitry that operates the inverter to deliver power wirelessly, using the wireless power transmitting coil, to the wireless power receiver by: characterizing a load line corresponding to the wireless power transmitter, the wireless power receiver, and a relative position between the wireless power transmitter and the wireless power receiver using a plurality of wireless power transfer system parameters determined by in-circuit measurements; identifying a stability boundary associated with the load line; and operating the wireless power transmitter at a power level that causes the wireless power transmitter to remain on a stable side of the stability boundary for the characterized load line.