Patent Number: 6,396,341

Title: Class E Doherty amplifier topology for high efficiency signal transmitters

Abstract: A Doherty amplifier circuit is provided comprising a digital signal processor for producing separated amplitude and phase modulated waveforms, and a plurality of class E amplifiers in communication with the digital signal processor. Each of the amplifiers has an input for receiving signals corresponding to the waveforms, and outputs linked to a shared load network. In this way, a scheme for efficient amplification of amplitude modulated waveforms is achieved across a wide dynamic range and for a large peak-to-average ratio using only input modulated techniques.

Inventors: Pehlke; David R. (Chapell Hill, NC)

Assignee: Ericsson Inc.

International Classification: H03F 1/02 (20060101); H03F 3/217 (20060101); H03F 1/07 (20060101); H03F 3/20 (20060101); H03F 003/38 ()

Expiration Date: 05/28/2019