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:
Sep. 22, 2015

Filed:

Sep. 30, 2013
Applicant:

Broadcom Corporation, Irvine, CA (US);

Inventors:

Jie Fang, Austin, TX (US);

Frank Wayne Singor, Austin, TX (US);

Assignee:

BROADCOM CORPORATION, Irvine, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01); H03F 3/193 (2006.01); H03F 1/26 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03G 3/30 (2013.01); H03F 1/26 (2013.01); H03F 3/193 (2013.01); H03F 3/45179 (2013.01); H03F 3/45632 (2013.01); H03F 2200/294 (2013.01); H03F 2203/45018 (2013.01); H03F 2203/45521 (2013.01); H03F 2203/45528 (2013.01); H03F 2203/45591 (2013.01);
Abstract

An inductor-less balun low-noise amplifier (LNA) includes a cross-coupled network coupled between first and second input terminals and first and second summing nodes. The cross-coupled network may include: a first non-inverting gain stage coupled between the first input terminal and the first summing node; a first inverting gain stage coupled between the first input terminal and the second summing node; a second non-inverting gain stage coupled between the second input terminal and the second summing node; and a second inverting gain stage coupled between the second input terminal and the first summing node. The cross coupled network may be configurable to provide common-mode rejection when operated in a differential or in a single-ended mode of operation.


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