Title :
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
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);
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
