Design of a Dual-Band Load-Modulated Sequential Amplifier with Extended Back-off
Summary :
This letter presents a dual-band load-modulated sequential amplifier (LMSA). The proposed amplifier changed the attenuator terminated at the isolation port of the four-port combiner of the traditional sequential power amplifier (SPA) architecture into a reactance modulation network (RMN) for load modulation. The impedance can be maintained pure resistance by designing RMN, thus realizing high efficiency and a good portion of the output power in the multiple bands. Compared to the dual-band Doherty power amplifier with a complex dual-band load modulation network (LMN), the proposed LMSA has advantages as maintaining high output power back-off (OBO) efficiency, wide bandwidth and simple construction. A 10-watt dual-band LMSA is simulated and measured in 1.7-1.9GHz and 2.4-2.6GHz with saturated efficiencies 61.2-69.9% and 54.4-70.8%, respectively. The corresponding 9dB OBO efficiency is 46.5-57.1% and 46.4-54.4%, respectively.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E106-C No.12 pp.808-811
- Publication Date
- 2023/12/01
- Publicized
- 2023/06/07
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.2023ECS6002
- Type of Manuscript
- BRIEF PAPER
- Category
- Microwaves, Millimeter-Waves
Authors
Minghui YOU
Hangzhou Dianzi University
Guohua LIU
Hangzhou Dianzi University
Zhiqun CHENG
Hangzhou Dianzi University
Keyword
Latest Issue
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Minghui YOU, Guohua LIU, Zhiqun CHENG, "Design of a Dual-Band Load-Modulated Sequential Amplifier with Extended Back-off" in IEICE TRANSACTIONS on Electronics,
vol. E106-C, no. 12, pp. 808-811, December 2023, doi: 10.1587/transele.2023ECS6002.
Abstract: This letter presents a dual-band load-modulated sequential amplifier (LMSA). The proposed amplifier changed the attenuator terminated at the isolation port of the four-port combiner of the traditional sequential power amplifier (SPA) architecture into a reactance modulation network (RMN) for load modulation. The impedance can be maintained pure resistance by designing RMN, thus realizing high efficiency and a good portion of the output power in the multiple bands. Compared to the dual-band Doherty power amplifier with a complex dual-band load modulation network (LMN), the proposed LMSA has advantages as maintaining high output power back-off (OBO) efficiency, wide bandwidth and simple construction. A 10-watt dual-band LMSA is simulated and measured in 1.7-1.9GHz and 2.4-2.6GHz with saturated efficiencies 61.2-69.9% and 54.4-70.8%, respectively. The corresponding 9dB OBO efficiency is 46.5-57.1% and 46.4-54.4%, respectively.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2023ECS6002/_p
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@ARTICLE{e106-c_12_808,
author={Minghui YOU, Guohua LIU, Zhiqun CHENG, },
journal={IEICE TRANSACTIONS on Electronics},
title={Design of a Dual-Band Load-Modulated Sequential Amplifier with Extended Back-off},
year={2023},
volume={E106-C},
number={12},
pages={808-811},
abstract={This letter presents a dual-band load-modulated sequential amplifier (LMSA). The proposed amplifier changed the attenuator terminated at the isolation port of the four-port combiner of the traditional sequential power amplifier (SPA) architecture into a reactance modulation network (RMN) for load modulation. The impedance can be maintained pure resistance by designing RMN, thus realizing high efficiency and a good portion of the output power in the multiple bands. Compared to the dual-band Doherty power amplifier with a complex dual-band load modulation network (LMN), the proposed LMSA has advantages as maintaining high output power back-off (OBO) efficiency, wide bandwidth and simple construction. A 10-watt dual-band LMSA is simulated and measured in 1.7-1.9GHz and 2.4-2.6GHz with saturated efficiencies 61.2-69.9% and 54.4-70.8%, respectively. The corresponding 9dB OBO efficiency is 46.5-57.1% and 46.4-54.4%, respectively.},
keywords={},
doi={10.1587/transele.2023ECS6002},
ISSN={1745-1353},
month={December},}
Copy
TY - JOUR
TI - Design of a Dual-Band Load-Modulated Sequential Amplifier with Extended Back-off
T2 - IEICE TRANSACTIONS on Electronics
SP - 808
EP - 811
AU - Minghui YOU
AU - Guohua LIU
AU - Zhiqun CHENG
PY - 2023
DO - 10.1587/transele.2023ECS6002
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E106-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2023
AB - This letter presents a dual-band load-modulated sequential amplifier (LMSA). The proposed amplifier changed the attenuator terminated at the isolation port of the four-port combiner of the traditional sequential power amplifier (SPA) architecture into a reactance modulation network (RMN) for load modulation. The impedance can be maintained pure resistance by designing RMN, thus realizing high efficiency and a good portion of the output power in the multiple bands. Compared to the dual-band Doherty power amplifier with a complex dual-band load modulation network (LMN), the proposed LMSA has advantages as maintaining high output power back-off (OBO) efficiency, wide bandwidth and simple construction. A 10-watt dual-band LMSA is simulated and measured in 1.7-1.9GHz and 2.4-2.6GHz with saturated efficiencies 61.2-69.9% and 54.4-70.8%, respectively. The corresponding 9dB OBO efficiency is 46.5-57.1% and 46.4-54.4%, respectively.
ER -
English
