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:
Jan. 15, 2019
Filed:
May. 31, 2017
Applicant:
Silicon Laboratories Inc., Austin, TX (US);
Inventors:
Assignee:
Silicon Laboratories Inc., Austin, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B 15/00 (2006.01); H04B 1/16 (2006.01); H03H 7/01 (2006.01); H03D 7/14 (2006.01); H03F 3/189 (2006.01); H03G 1/00 (2006.01);
U.S. Cl.
CPC ...
H04B 1/16 (2013.01); H03D 7/14 (2013.01); H03F 3/189 (2013.01); H03G 1/0005 (2013.01); H03H 7/0153 (2013.01); H03F 2200/144 (2013.01); H03F 2200/165 (2013.01); H03F 2200/21 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01);
Abstract
An apparatus includes a radio-frequency (RF) receiver. The RF receiver includes a single-balanced passive mixer driven by the output of a low noise amplifier (LNA) and a passive filter driven by an output of the single-balanced passive mixer. The RF receiver further includes a programmable gain amplifier (PGA) having an input resistance that generates noise, where the PGA is driven by an output of the passive filter, and the noise generated by the input resistance of the PGA is suppressed.