2007•IEEE MTT-S International Microwave Symposium digestRequires access

N-Way Distributed Doherty Amplifier with an Extended Efficiency Range

Kyoung-Joon Cho, Wan-Jong Kim, Ji‐Yeon Kim, Jong‐Heon Kim, Shawn P. Stapleton

Abstract

This paper presents a novel 3-way distributed Doherty power amplifier with an extended efficiency range for WCDMA repeater or base-station applications. This distributed Doherty amplifier consists of one main amplifier and two peaking amplifiers. In order to get high efficiency at a high back-off power, the peaking amplifier structure is based on the dual-fed distributed amplifier form. The 2140 MHz measured results of the 3-way distributed Doherty amplifier yielded 11 dB power gain, with 39.5 % power added efficiency (PAE) at 9.5 dB backoff power. High linearity performance of -54 dBc ACPR is achieved after using memory compensated digital predistortion.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 15 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Doherty amplifier, Amplifier, Linear amplifier, Power-added efficiency, RF power amplifier, Direct-coupled amplifier, Cascade amplifier, Predistortion