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How to Design an Outphasing Power Amplifier with Digital Predistortion
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Summary :
For improving the fifth-generation mobile communication system, a highly efficient power amplifier must be designed for the base station. An outphasing amplifier is expected to be a solution for achieving high efficiency. We designed a combiner, one of the key components of the outphasing amplifier, using a serial Chireix combiner and fabricated an amplifier with a GaN HEMT, achieving 70% or more high efficiency up to 9 dB back-off power in an 800 MHz band. We also fabricated a 2 GHz-band outphasing amplifier with the same design. We applied digital predistortion (DPD) to control the balance of amplifying units in this amplifier and achieved an average efficiency of 65% under a 20 MHz modulation bandwidth.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E104-C No.10 pp.472-479
- Publication Date
- 2021/10/01
- Publicized
- 2021/04/09
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.2021MMI0006
- Type of Manuscript
- Special Section INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
- Category
Authors
Shigekazu KIMURA
Fujitsu
Toshio KAWASAKI
Fujitsu
Keyword
Latest Issue
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Shigekazu KIMURA, Toshio KAWASAKI, "How to Design an Outphasing Power Amplifier with Digital Predistortion" in IEICE TRANSACTIONS on Electronics,
vol. E104-C, no. 10, pp. 472-479, October 2021, doi: 10.1587/transele.2021MMI0006.
Abstract: For improving the fifth-generation mobile communication system, a highly efficient power amplifier must be designed for the base station. An outphasing amplifier is expected to be a solution for achieving high efficiency. We designed a combiner, one of the key components of the outphasing amplifier, using a serial Chireix combiner and fabricated an amplifier with a GaN HEMT, achieving 70% or more high efficiency up to 9 dB back-off power in an 800 MHz band. We also fabricated a 2 GHz-band outphasing amplifier with the same design. We applied digital predistortion (DPD) to control the balance of amplifying units in this amplifier and achieved an average efficiency of 65% under a 20 MHz modulation bandwidth.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2021MMI0006/_p
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@ARTICLE{e104-c_10_472,
author={Shigekazu KIMURA, Toshio KAWASAKI, },
journal={IEICE TRANSACTIONS on Electronics},
title={How to Design an Outphasing Power Amplifier with Digital Predistortion},
year={2021},
volume={E104-C},
number={10},
pages={472-479},
abstract={For improving the fifth-generation mobile communication system, a highly efficient power amplifier must be designed for the base station. An outphasing amplifier is expected to be a solution for achieving high efficiency. We designed a combiner, one of the key components of the outphasing amplifier, using a serial Chireix combiner and fabricated an amplifier with a GaN HEMT, achieving 70% or more high efficiency up to 9 dB back-off power in an 800 MHz band. We also fabricated a 2 GHz-band outphasing amplifier with the same design. We applied digital predistortion (DPD) to control the balance of amplifying units in this amplifier and achieved an average efficiency of 65% under a 20 MHz modulation bandwidth.},
keywords={},
doi={10.1587/transele.2021MMI0006},
ISSN={1745-1353},
month={October},}
Copy
TY - JOUR
TI - How to Design an Outphasing Power Amplifier with Digital Predistortion
T2 - IEICE TRANSACTIONS on Electronics
SP - 472
EP - 479
AU - Shigekazu KIMURA
AU - Toshio KAWASAKI
PY - 2021
DO - 10.1587/transele.2021MMI0006
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E104-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2021
AB - For improving the fifth-generation mobile communication system, a highly efficient power amplifier must be designed for the base station. An outphasing amplifier is expected to be a solution for achieving high efficiency. We designed a combiner, one of the key components of the outphasing amplifier, using a serial Chireix combiner and fabricated an amplifier with a GaN HEMT, achieving 70% or more high efficiency up to 9 dB back-off power in an 800 MHz band. We also fabricated a 2 GHz-band outphasing amplifier with the same design. We applied digital predistortion (DPD) to control the balance of amplifying units in this amplifier and achieved an average efficiency of 65% under a 20 MHz modulation bandwidth.
ER -
English
