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:
Nov. 29, 2005
Filed:
Oct. 30, 2001
Riku Ikonen, Salo, FI;
Lasse Alestalo, Somero, FI;
Riku Ikonen, Salo, FI;
Lasse Alestalo, Somero, FI;
Elektrobit Oy, Oulu, FI;
Abstract
The invention relates to a linearization method and an amplifier arrangement for linearizing an amplifier () amplifying an RF signal with a variable envelope. The amplifier arrangement comprises a sampling device () for sampling an RF signal to be amplified. The amplifier arrangement further comprises a control device () arranged to generate, using samples, an output signal changing its value according to the envelope shape of the RF signal to be amplified. The amplifier arrangement further comprises an adjusting device () arranged to adjust, using the output signal, the bias current of the amplifier such that the magnitude of the output signal and the magnitude of the bias current change in the same direction.