A design method for concurrent tri-band Doherty Power Amplifier

Author

Costanzo, F. ; Giofre, R. ; Piazzon, L. ; Giannini, F. ; Colantonio, P. ; Deepak Nair, M.V.

Author_Institution

E.E. Dept., Univ. of Roma Tor Vergata, Rome, Italy

fYear

2015

fDate

March 30 2015-April 1 2015

Firstpage

1

Lastpage

3

Abstract

This paper presents the design of a concurrent tri-band Doherty Power Amplifier (DPA) for 1.84 GHz, 2.14 GHz and 2.65 GHz frequency bands. The frequency response around each operating band is maximally flattened adopting a new design strategy. The DPA is based on hybrid technology using two 8 W GaN HEMT as active devices. The results show a peak of drain efficiency higher than 60 % in each operating band and over 45 % at the corresponding 6 dB output power back-off (OBO). Finally, more than 200 MHz of bandwidth is achieved around each operating frequency.

Keywords

power amplifiers; DPA; OBO; bandwidth 200 MHz; concurrent tri-band Doherty power amplifier; design method; frequency 1.84 GHz; frequency 2.14 GHz; frequency 2.65 GHz; frequency response; hybrid technology; operating band; operating frequency; output power back-off; power back-off; Bandwidth; Frequency response; Impedance; Microwave amplifiers; Power amplifiers; Power generation; Concurrent PA; Doherty; multiband; power amplifier; tri-band; wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2015 IEEE International

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/IEEE-IWS.2015.7164633

Filename

7164633