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.
Patent No.:
Date of Patent:
Aug. 15, 2017
Filed:
Dec. 15, 2015
Applicant:
Silicon Laboratories Inc., Austin, TX (US);
Inventors:
Mark May, Austin, TX (US);
Steve Hanawalt, Austin, TX (US);
Assignee:
Silicon Laboratories Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/06 (2006.01); H03G 3/30 (2006.01); H04B 1/12 (2006.01); H04B 1/10 (2006.01); H03G 3/00 (2006.01); H03F 3/19 (2006.01);
U.S. Cl.
CPC ...
H03G 3/3036 (2013.01); H03F 3/19 (2013.01); H03G 3/008 (2013.01); H03G 3/3068 (2013.01); H04B 1/109 (2013.01); H04B 1/123 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01);
Abstract
An apparatus includes an input terminal to receive a radio frequency (RF) signal and to communicate the RF signal to a low noise amplifier (LNA) via an input signal path, and a capacitor attenuator coupled to the input terminal to attenuate the RF signal by a controllable amount and having a first portion controllable to include a used part configured on the input signal path and an unused part coupled between the input signal path and an AC reference node, and a second portion coupled between the LNA and the AC reference node.