[1] Ji Lianqing, Xu Zhiming, Zhou Jianyi, Zhai Jianfeng, et al. Highly efficient class-F power amplifierwith digital predistortion for WCDMA applications [J]. Journal of Southeast University (English Edition), 2013, 29 (2): 125-128. [doi:10.3969/j.issn.1003-7985.2013.02.003]
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Highly efficient class-F power amplifierwith digital predistortion for WCDMA applications(
)
应用于WCDMA的高效率F类功率放大器及数字预失真
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 29
- Issue:
- 2013 2
- Page:
- 125-128
- Research Field:
- Electronic Science and Engineering
- Publishing date:
- 2013-06-20
Info
- Title:
- Highly efficient class-F power amplifierwith digital predistortion for WCDMA applications
- 应用于WCDMA的高效率F类功率放大器及数字预失真
- Author(s):
- Ji Lianqing, Xu Zhiming, Zhou Jianyi, Zhai Jianfeng
- State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
- Keywords:
- digital predistortion; peak power-added efficiency; drain efficiency; adjacent channel power ratio; efficiency; linearity; class-F power amplifier
- PACS:
- TN722
- DOI:
- 10.3969/j.issn.1003-7985.2013.02.003
- Abstract:
- A digital predistorted class-F power amplifier(PA)using Cree GaN HEMT CGH40010 operating at 2.12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access(WCDMA)applications. Measurement results with the continuous wave(CW)signals indicate that the designed class-F PA achieves a peak power-added efficiency(PAE)of 75.2% with an output power of 39.4 dBm. The adjacent channel power ratio(ACPR)of the designed PA after digital predistortion(DPD)decreases from -28.3 and -27.5 dBc to -51.9 and -54.0 dBc, respectively, for a 4-carrier 20 MHz WCDMA signal with 7.1 dB peak to average power ratio(PAPR). The drain efficiency(DE)of the PA is 37.8% at an average output power of 33.3 dBm. The designed power amplifier can be applied in the WCDMA system.
- 采用Cree公司的GaN晶体管CGH40010, 设计了一个工作在2.12GHz, 用于WCDMA的带有数字预失真的高效率F类功率放大器, 以实现其高效率和高线性度.经过连续波信号测试, 设计完成的F类功率放大器实现了75.2%的功率附加效率和39.4 dBm的最大输出功率.对峰均比为7.1 dB、带宽为20 MHz的4载波WCDMA信号, 经过数字预失真线性化技术后, F类功放在33.3 dBm的平均输出功率下, 输出信号的邻信道功率比分别由-28.3和-27.5 dBc降低到-51.9和-54.0 dBc.功放的漏极效率达到37.8%.所设计的功率放大器可用于WCDMA系统中.
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Memo
- Memo:
-
Biographies: Ji Lianqing(1986—), male, graduate; Zhou Jianyi(corresponding author), male, doctor, professor, jyzhou@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.60702163), the National Science and Technology Major Project(No.2010ZX03007-002-01, 2011ZX03004-003).
Citation: Ji Lianqing, Xu Zhiming, Zhou Jianyi, et al. Highly efficient class-F power amplifier with digital predistortion for WCDMA applications[J].Journal of Southeast University(English Edition), 2013, 29(2):125-128.[doi:10.3969/j.issn.1003-7985.2013.02.003]