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. 06, 2015

Filed:

Jul. 30, 2013
Applicant:

Silicon Laboratories Inc., Austin, TX (US);

Inventors:

Navin Harwalkar, Austin, TX (US);

Dan B. Kasha, Seattle, WA (US);

Assignee:

Silicon Laboratories Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/06 (2006.01); H03F 1/22 (2006.01); H03F 1/56 (2006.01); H03F 3/193 (2006.01); H04B 1/18 (2006.01); H04B 1/26 (2006.01);
U.S. Cl.
CPC ...
H03F 1/223 (2013.01); H03F 1/565 (2013.01); H03F 3/193 (2013.01); H04B 1/18 (2013.01); H03F 2200/213 (2013.01); H03F 2200/225 (2013.01); H03F 2200/294 (2013.01);
Abstract

An apparatus includes an integrated circuit. The integrated circuit includes a low-noise amplifier having a first complex input impedance. The integrated circuit includes a complex attenuator coupled to an input terminal of the integrated circuit. The complex attenuator has a second complex input impedance and a first complex output impedance. The apparatus may include a matching network coupled to the input terminal of the integrated circuit. The matching network is external to the integrated circuit. The matching network may have a first real input impedance and a second complex output impedance. The second complex output impedance is matched to the second complex input impedance.


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