Title :
Digital Pre-distortion for improving efficiency, linearity and average output power of microwave Point-to-Point power amplifiers used in cellular backhaul telecommunication systems
Author :
Branson, Roger ; Steinbeiser, Craig ; Tran, Kim ; Loran, Brian ; Wohlert, David
Author_Institution :
TriQuint Semiconductor, 500 W. Renner Road, Richardson, TX, 75080, USA
Abstract :
Digital Pre-distortion (DPD) has been demonstrated to significantly improve linearity while increasing efficiency and average output power in microwave Point-to-Point power amplifiers, such as those used in microwave backhaul for cellular communication systems. By applying Digital Pre-distortion to a three-stage 15 GHz amplifier, linearity was improved more than 20 dB, efficiency at back off was improved from 2.5% to 8.9%, and average output power increased from 22.5 dBm to 26.3 dBm.
Keywords :
Linearity; Microwave amplifiers; Microwave circuits; Microwave communication; Power amplifiers; Power generation; microwave communication; microwave integrated circuit and quadrature amplitude modulation; power amplifiers; predistortion; radio link;
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2012.6258393
