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:
Apr. 13, 2021
Filed:
Jul. 10, 2018
Qualcomm Incorporated, San Diego, CA (US);
Jing-Hwa Chen, Sudbury, MA (US);
Jisun Ryu, Sudbury, MA (US);
Yan Kit Gary Hau, Westford, MA (US);
Yanjie Sun, Lexington, MA (US);
Xinwei Wang, Dunstable, MA (US);
Xiangdong Zhang, Westford, MA (US);
QUALCOMM INCORPORATED, San Diego, CA (US);
Abstract
Certain aspects of the present disclosure provide methods and apparatus for current-limiting protection of an amplifier, such as a power amplifier in a radio frequency (RF) front-end. One example current-limiting circuit generally includes a node coupled to a current source, a plurality of current-sinking devices coupled to the node, one or more switches coupled between the node and at least one of the plurality of current-sinking devices, and a bias circuit having an input coupled to the node and an output for coupling to an input of the amplifier.