Broadcom. has been granted a patent for a rectifier system that utilizes field effect transistors (FETs) to modulate signals for Amplitude Shift Keying (ASK) communication. The system measures signal quality to adjust modulation depth and applies a ballast signal to optimize performance. GlobalData’s report on Broadcom gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Broadcom, Digital watermarking was a key innovation area identified from patents. Broadcom's grant share as of July 2024 was 73%. Grant share is based on the ratio of number of grants to total number of patents.
Rectifier for modulating signals in ask communication systems
The patent US12074533B2 describes a rectifier designed for wireless power transfer systems, incorporating multiple field effect transistors (FETs) to manage voltage rectification and load modulation. The rectifier includes two high side FETs, two low side FETs, and an additional set of low side FETs, all coordinated by a controller. This controller is responsible for generating a rectified voltage (VRECT) based on a carrier signal and applying a ballast signal to the low side FETs to create a load at a coil. The system is capable of measuring signal quality metrics and determining modulation depth, which informs how many FETs in the second set should receive the ballast signal to achieve the desired modulation.
Additionally, the patent outlines methods for operating the rectifier, including switching the FETs between conducting and non-conducting states based on the carrier signal. The controller can also apply ballast signals to different FETs to manage load conditions effectively. The design may include an amplitude shift keying (ASK) modulator for communication purposes, enhancing the system's functionality. The controller is further equipped to monitor VRECT and apply input loads to maintain voltage levels within predefined thresholds. Overall, this patent presents a sophisticated approach to managing power transfer in wireless systems, emphasizing efficiency and adaptability through its multi-FET configuration and intelligent control mechanisms.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
