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.

Date of Patent:
Mar. 22, 2022

Filed:

Jun. 01, 2020
Applicant:

Realtek Semiconductor Corporation, Hsinchu, TW;

Inventors:

Chia-Jun Chang, Hsinchu, TW;

Chia-Yi Lee, Hsinchu, TW;

Ping-Hsuan Tsai, Hsinchu, TW;

Ka-Un Chan, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03F 1/22 (2006.01); H03F 3/72 (2006.01);
U.S. Cl.
CPC ...
H03F 1/223 (2013.01); H03F 3/72 (2013.01); H03F 2200/294 (2013.01); H03F 2200/84 (2013.01);
Abstract

A low noise amplifier circuit includes an input stage circuit, a first output stage circuit, and a second output stage circuit. The input stage circuit is configured to receive an input signal and to generate a bias signal. The first output stage circuit corresponding to a first wireless communication and is configured to be biased according to the bias signal and a first control signal, in order to generate a first output signal, in which the first control signal is for setting a first gain of the first output stage circuit. The second output stage circuit corresponding to a second wireless communication and is configured to be biased according to the bias signal and a second control signal, in order to generate a second output signal, in which the second control signal is for setting a second gain of the second output stage circuit.


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