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

Firstpage

647

Lastpage

650

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

MMIC power amplifiers; UHF amplifiers; active antennas; cellular radio; LTE downlink; balanced power amplifier module; bandwidth 10 MHz; cellular infrastructure active antenna systems; 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 Integrated Circuits Conference (EuMIC), 2012 7th European

Conference_Location

Amsterdam

Print_ISBN

978-1-4673-2302-4

Electronic_ISBN

978-2-87487-026-2

Type

conf

Filename

6483883