A 45 dBm balanced power amplifier module based on four fully integrated Doherty PA MMICs A scalable solution for cellular infrastructure active antenna systems

Author

Karthaus, Udo ; Sukumaran, Deepti ; Schmidt, L. ; Ahles, S. ; Wagner, Hannes

Author_Institution

Ubidyne GmbH, Ulm, Germany

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1027

Lastpage

1030

Abstract

After providing an introduction to active antenna systems (AAS) for cellular infrastructure, this paper presents power amplifier (PA) modules based on a balanced configuration of 2-8 fully integrated Doherty MMIC PAs. To our knowledge for the first time, a module with four Doherty MMIC PAs in a balanced configuration has been fabricated and tested. For a 10 MHz wide LTE downlink signal at 751 MHz, average and peak output power levels were 37.8 dBm and 45.0 dBm, respectively, with ACPR ≤-48.5 dBc. Overall PAE was 34 %.

Keywords

Long Term Evolution; MMIC amplifiers; active antennas; cellular radio; microwave power amplifiers; mobile antennas; AAS; LTE downlink signal; balanced power amplifier module; cellular infrastructure active antenna systems; efficiency 34 percent; frequency 751 MHz; fully integrated Doherty PA MMIC; power amplifier modules; MMICs; Microwave amplifiers; Microwave antennas; Power amplifiers; Power generation; Radio frequency; Transceivers; Active antenna system (AAS); Doherty power amplifier; GaAs; long term evolution (LTE); microwave monolythic integrated circuit (MMIC); power amplifier (PA);

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2012 42nd European

Conference_Location

Amsterdam

Print_ISBN

978-1-4673-2215-7

Electronic_ISBN

978-2-87487-026-2

Type

conf

Filename

6459327