ScholarLens Back to search
2010•Unpublished venueRequires access

Efficiency-enhanced inverted Doherty power amplifier with class-E peaking amplifier

Changjiang You, Xiao‐Wei Zhu, Jingqi Wang, Zhongyu Liao

Open publisher page 2 citations

Abstract

In this design, the class-E amplifier is used as peaking amplifier in place of the class-C amplifier in the traditional inverted Doherty amplifier to obtain higher power-added efficiency. The load network of class-E peaking amplifier consists of one impedance matching network and two harmonic suppression structures. To validate the analysis, a 38 dBm inverted Doherty amplifier with class-E peaking amplifier is designed and fabricated at 1.96 GHz. The simulated results show that 11.5% and 1.1% power-added efficiency improvement is obtained in comparison to balanced class-AB amplifier and traditional inverted Doherty amplifier at an output power of 38dBm respectively. The second and third harmonics were measured to be less than -36dBc and -30dBc, respectively, at output power ranges of 24dBm to 38dBm.

About this research paper

What this paper is about

In this design, the class-E amplifier is used as peaking amplifier in place of the class-C amplifier in the traditional inverted Doherty amplifier to obtain higher power-added efficiency. The load network of class-E peaking amplifier consists of one impedance matching network and two harmonic suppression structures. To validate the analysis, a 38 dBm inverted Doherty amplifier with class-E peaking amplifier is designed and fabricated at 1.96 GHz. The simulated results show that 11.5% and 1.1% power-added efficiency improvement is obtained in comparison to balanced class-AB amplifier and traditional inverted Doherty amplifier at an output power of 38dBm respectively. The second and third harmonics were measured to be less than -36dBc and -30dBc, respectively, at output power ranges of 24dBm to 38dBm.

Why it matters

OpenAlex reports 2 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

In this design, the class-E amplifier is used as peaking amplifier in place of the class-C amplifier in the traditional inverted Doherty amplifier to obtain higher power-added efficiency. The load network of class-E peaking amplifier consists of one impedance matching network and two harmonic suppression structures. To validate the analysis, a 38 dBm inverted Doherty amplifier with class-E peaking amplifier is designed and fabricated at 1.96 GHz. The simulated results show that 11.5% and 1.1% power-added efficiency improvement is obtained in comparison to balanced class-AB amplifier and traditional inverted Doherty amplifier at an output power of 38dBm respectively. The second and third harmonics were measured to be less than -36dBc and -30dBc, respectively, at output power ranges of 24dBm to 38dBm.

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

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Efficiency-enhanced inverted Doherty power amplifier with class-E peaking amplifier — Research Paper | ScholarLens