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. 19, 2014
Filed:
Nov. 28, 2012
Method and apparatus for implementing a low noise amplifier with associated gain and input impedance
Motorola Solutions, Inc., Schaumburg, IL (US);
Shafiullah Syed, Coral Springs, FL (US);
Joseph P. Heck, Fort Lauderdale, FL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
An apparatus with associated gain and input impedance includes gain devices, a switching unit and a resistor. A first differential pair of gain devices and associated bias circuitry is configured to operate in a full gain mode. A second differential pair of gain devices is configured to operate in a reduced gain mode. The switching unit is configured to disable the first differential pair of gain devices and enable the second differential pair of gain devices in the reduced gain mode and to disable the second differential pair of gain devices and enable the first differential pair of gain devices in the full gain mode. The resistor is configured to maintain constant input impedance of the apparatus when in the reduced gain mode.