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:
Jun. 23, 2026
Filed:
Nov. 16, 2022
Psemi Corporation, San Diego, CA (US);
Shota Ishihara, San Diego, CA (US);
Tero Ranta, San Diego, CA (US);
PSEMI CORPORATION, San Diego, CA (US);
Abstract
Various methods and circuital arrangements for protection of a power amplifier (PA) from high input power conditions are presented. According to one aspect, a protection circuit coupled to a stage of the PA limits a current through the stage during the high input power conditions. Limiting of the current is provided by a current limiter circuit that includes a current generator coupled to a current mirror. The current is limited to a high value that is based on a reference current generated by the current generator. In one aspect, the reference current is programmable or variable. In another aspect the protection circuit includes a clamp that limits a low voltage at an output of the current limiter circuit. In another aspect, the protection circuit includes a pre-charge circuit that pre-charges the output of the current limiter circuit. In another aspect a filter is embedded within the current limiter circuit.