A Doherty power amplifier employing direct input power dividing technology

Author

Xiao, Zhi ; Hu, Yongzhong ; Wang, Wei

Author_Institution

Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

19-20 April 2012

Firstpage

1

Lastpage

3

Abstract

A Doherty power amplifier (DPA) using direct input power dividing circuit technology is discussed in this paper, which improves the AM-AM performance of the classical DPA. The proposed DPA is able to control the input power dividing ratio according to the input power, which results in the outputting ability of the peaking amplifier is increased dramatically. The ADS stimulation results show that the designed DPA based on two Freescale MRF6S27015 device achieve 51.9% drain efficiency and -33.6 dBc IMD3 when input long term evolution signal at 2.35 GHz and output power is 40.9 dBm, which improve 5.8% in drain efficiency and low 4dBc in IMD3 compared with classical DPA.

Keywords

power amplifiers; power dividers; ADS stimulation; AM-AM performance; DPA; Doherty power amplifier; IMD3; direct input power dividing circuit technology; drain efficiency; efficiency 5.8 percent; freescale MRF6S27015 device; frequency 2.35 GHz; long term evolution signal; peaking amplifier; power dividing ratio control; Couplers; Gain; Impedance; Linearity; Peak to average power ratio; Power amplifiers; Power generation; AM-AM; Doherty power amplifier; PAPR; direct input power dividing; high efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2012 International Workshop on

Conference_Location

Chengdu

Print_ISBN

978-1-4673-1893-8

Type

conf

DOI

10.1109/MMWCST.2012.6238108

Filename

6238108