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:
Oct. 20, 2015

Filed:

Oct. 09, 2013
Applicant:

Broadcom Corporation, Irvine, CA (US);

Inventors:

Giuseppe Cusmai, Mission Viejo, CA (US);

Vijayaramalingam Periasamy, Irvine, CA (US);

Xi Chen, Irvine, CA (US);

Ramon Alejandro Gomez, San Juan Capistrano, CA (US);

Assignee:

Broadcom Corporation, Irvine, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/38 (2006.01); H03F 3/217 (2006.01); H03F 1/22 (2006.01); H03F 1/26 (2006.01); H03F 1/34 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01);
U.S. Cl.
CPC ...
H03F 3/2171 (2013.01); H03F 1/22 (2013.01); H03F 1/26 (2013.01); H03F 1/34 (2013.01); H03F 1/56 (2013.01); H03F 3/19 (2013.01); H03F 3/245 (2013.01); H03F 2200/123 (2013.01); H03F 2200/151 (2013.01); H03F 2200/498 (2013.01);
Abstract

A system includes a weighting element, a transconductance circuit, a feedback loop, and an auxiliary loop. In some implementations, the transconductance circuit may accept an input and provide a first portion of an output for amplification at a variable amplification level to generate an amplifier output. The feedback loop may provide a portion of the amplifier output as a first feedback to the input. The first feedback may be associated with an impedance that may vary with the amplification level. The auxiliary loop may provide a second feedback to the input to reduce the dependence of the impedance on the amplification level.


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