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. 22, 2000
Filed:
Aug. 06, 1998
Michael Joseph Shaw, Keller, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The present invention provides for a method and apparatus for increasing the linearity of the phase and gain of an amplifier circuit (10, 22). The amplifier circuit (10, 22) maintains linearity of the amplified output signal by monitoring the power levels of the input signal, and adjusting the supply voltage level(s) of the amplifier (18), based upon the measured input power levels. By appropriately adjusting the supply voltage level(s) of the amplifier (18) an output signal having a consistent gain and phase can be realized. Preferably a delay circuit (26) will be used to delay receipt of the input signal by the amplifier (18), so as to synchronize receipt of the input signal with the corresponding source voltage adjustments. The value of the delay preferably corresponds to the time for the envelope detector (14) to measure the instantaneous input power levels and the time for the processing unit (16) to determine and apply the appropriate supply voltage level(s) to the amplifier (18).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile