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Volume 11
Issue 19
10.3390/electronics11193257
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Communication

A Five-Level RF-PWM Method with Third and Fifth Harmonic Elimination for All-Digital Transmitters

by
Haoyang Fu
1,
Qiang Zhou
1,*,
Lei Zhu
1,
Zhang Chen
1,
Zhihu Wei
1 and
Siyu Zeng
1,2
1
The Sixty-Third Research Institute, National University of Defense Technology, Nanjing 210007, China
2
School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
*
Author to whom correspondence should be addressed.
Electronics 2022, 11(19), 3257; https://doi.org/10.3390/electronics11193257
Submission received: 25 August 2022 / Revised: 4 October 2022 / Accepted: 5 October 2022 / Published: 10 October 2022
(This article belongs to the Special Issue Signal Processing in Wireless Communications)
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Abstract

An appropriate pulse-coding algorithm is the key to achieving an efficient switched-mode power amplification in all-digital transmitters. A five-level RF-PWM method with third and fifth harmonic elimination is proposed to relax the requirements of the filter and to reduce the control complexity of the SMPA for all-digital transmitters. By controlling the pulse width and the center position of three-level sub-pulses, third and fifth harmonic elimination is achieved. Meanwhile, the control complexity of the SMPA is reduced by the decrease in the output-signal-level number. Finally, the feasibility of the method is verified by simulation. For the 16QAM signal with a carrier frequency of 200 MHz, the proposed method can achieve third harmonic suppression of −46.24 dBc and fifth harmonic suppression of −54.05 dBc when coding efficiency reaches 77.51%.
Keywords: all-digital transmitter (ADTx); multilevel RF-PWM; harmonic elimination; radio communication; switched-mode power amplifier (SMPA) all-digital transmitter (ADTx); multilevel RF-PWM; harmonic elimination; radio communication; switched-mode power amplifier (SMPA)

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MDPI and ACS Style

Fu, H.; Zhou, Q.; Zhu, L.; Chen, Z.; Wei, Z.; Zeng, S. A Five-Level RF-PWM Method with Third and Fifth Harmonic Elimination for All-Digital Transmitters. Electronics 2022, 11, 3257. https://doi.org/10.3390/electronics11193257

AMA Style

Fu H, Zhou Q, Zhu L, Chen Z, Wei Z, Zeng S. A Five-Level RF-PWM Method with Third and Fifth Harmonic Elimination for All-Digital Transmitters. Electronics. 2022; 11(19):3257. https://doi.org/10.3390/electronics11193257

Chicago/Turabian Style

Fu, Haoyang, Qiang Zhou, Lei Zhu, Zhang Chen, Zhihu Wei, and Siyu Zeng. 2022. "A Five-Level RF-PWM Method with Third and Fifth Harmonic Elimination for All-Digital Transmitters" Electronics 11, no. 19: 3257. https://doi.org/10.3390/electronics11193257

APA Style

Fu, H., Zhou, Q., Zhu, L., Chen, Z., Wei, Z., & Zeng, S. (2022). A Five-Level RF-PWM Method with Third and Fifth Harmonic Elimination for All-Digital Transmitters. Electronics, 11(19), 3257. https://doi.org/10.3390/electronics11193257

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