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:
Jul. 28, 2026
Filed:
Sep. 13, 2023
Smarter Microelectronics (Guang Zhou) Co., Ltd., Guangzhou, CN;
Yangyang Peng, Guangzhou, CN;
Yang Hou, Guangzhou, CN;
SMARTER MICROELECTRONICS (GUANG ZHOU) CO., LTD., Guangzhou, CN;
Abstract
A circuit for protecting an amplifier includes a detection circuit, a controller and a bypass impedance adjustment circuit. The detection circuit is configured to detect an operation electrical signal of a power amplifier and generate a trigger electrical signal based on the operation electrical signal correspondingly. A first output end of the controller is connected to a base or a gate or a bias circuit of the power amplifier, and a second output end of the controller is connected to a control input end of the bypass impedance adjustment circuit. The bypass impedance adjustment circuit is connected in parallel with the power amplifier. The controller is configured to generate a first control signal and a second control signal based on the trigger electrical signal, and the first control signal is configured to control a bias current or bias voltage of the power amplifier.