US2018175814A1PendingUtilityA1

Circuits and methods for biasing power amplifiers

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Assignee: SKYWORKS SOLUTIONS INCPriority: Jun 28, 2014Filed: Nov 28, 2017Published: Jun 21, 2018
Est. expiryJun 28, 2034(~8 yrs left)· nominal 20-yr term from priority
Inventors:Andy Cheng Pang WuYu-Jui LinFlorina Alexandra Lefter-Elarabi
H03F 2200/451H03F 3/72H03F 1/0272H03F 2203/7209H03F 3/19H03F 3/195H03F 1/02H03F 3/245H03F 2200/111H03G 1/0088H03F 2200/153H03F 2200/135
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Claims

Abstract

Circuits and methods for biasing power amplifiers. In some embodiments, a power amplifier circuit can include a transistor having and input and an output, and configured to amplify a signal. The power amplifier circuit can further include a bias circuit configured to provide a bias signal to the input of the transistor. The power amplifier circuit can further include a switchable feed circuit implemented between the bias circuit and the input of the transistor, and configured to provide a plurality of different resistance values for the bias signal between the bias circuit and the input of the transistor.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A power amplifier circuit comprising:
 a transistor having and input and an output, and configured to amplify a signal;   a bias circuit configured to provide a bias signal to the input of the transistor; and   a switchable feed circuit implemented between the bias circuit and the input of the transistor, and configured to provide a plurality of different resistance values for the bias signal between the bias circuit and the input of the transistor.

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