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:
Jul. 01, 2025
Filed:
May. 11, 2011
Fadhel Ghannouchi, Calgary, CA;
Ramzi Darraji, Calgary, CA;
Fadhel Ghannouchi, Calgary, CA;
Ramzi Darraji, Calgary, CA;
Abstract
A digital Doherty amplifier compromises a baseband signal processing block including a digital predistortion unit, a digital signal distribution unit and a digital phase alignment unit; a signal up-conversion block, an RF power amplification block, the RF power amplification block including the carrier amplifier and one or two peaking amplifiers; and a RF Doherty combining network. In another aspect, a digital Doherty amplifier compromises a baseband signal block including a digital predistortion unit, a digital signal distribution unit and an adaptive digital phase alignment unit; a signal up-conversion block; a signal up-conversion block, the signal up-conversion block including three digital-to-analog converters (DACs) and a tri-channel up-converter or three single-channel up-converters; a RF power amplification block, the RF power amplification block including the carrier amplifier and two peaking amplifiers; and an RF Doherty combining network which includes quarter wavelength impedance transformers.