A Novel Multi-level RF-PWM Method for Selective Harmonic Elimination

被引：0
|
作者：
Zhou Q. [1 ]
Yao F.-Q. [1 ]
Wei Z.-H. [1 ]
Zhu L. [1 ]
Chen J.-B. [1 ]
机构：
[1] The Sixty-third Research Institute, National University of Defense Technolog, Nanjing, 210007, Jiangsu
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2019年 / 47卷 / 03期
关键词：
Adaptive thresholding; All-digital transmitter; Multi-level; Pulse-width modulation; Selective harmonic elimination;
D O I：
10.3969/j.issn.0372-2112.2019.03.011
中图分类号：
学科分类号：
摘要：
To eliminate the selective harmonics of radio frequency pulse width modulation (RF-PWM) signals, a novel multi-level RF-PWM method for all-digital transmitters (ADTx) is proposed.This method compares the adaptive thresholds in real-time with the phase modulated signal, and controls the pulsewidth of the corresponding subpulses to make the selected harmonics cancel each other out and keep the weighted superposition of fundamental frequency components proportional to input envelope.Compared with the existing techniques, the proposed method can significantly relax the filtering requirements and improve the wideband performance of the ADTx.For the third harmonic elimination, the corresponding 5-level RF-PWM scheme is presented in this paper.Finally, the proposed scheme is verified by extensive simulations and offline measurements. © 2019, Chinese Institute of Electronics. All right reserved.
引用
收藏
页码：591 / 599
页数：8
相关论文
共 19 条
  • [1] Nuyts P.A.J., Singerl P., Dielacher F., Reynaert P., Dehaene W., A fully digital delay line based GHz range multimode transmitter front-end in 65nm CMOS, IEEE Journal Solid-State Circuits, 47, 7, pp. 1681-1692, (2012)
  • [2] Maroldt S., Quay R., Haupt C., Ambacher O., Broadband GaN-based switch-mode core MMICs with 20 W output power operating at UHF, Proceeding of 2011 IEEE Compound Semiconductor Integrated Circuit Symposium, pp. 1-4, (2011)
  • [3] Chen J.-B., Zhou Q., Tan X., Zhao Z.-Y., The research of level-transform strategy for switching amplifier based on 2 bit delta-sigma modulator, Acta Electronica Sinica, 43, 7, pp. 1413-1417, (2015)
  • [4] Chi S., Singerl P., Vogel C., Coding efficiency optimization for multi-level PWM based switched-mode RF transmitters, Proceeding of 54th IEEE International Midwest Symposium on Circuits and Systems, pp. 1-4, (2011)
  • [5] Keyzer J., Hinrichs J., Metzger A., Iwamoto M., Galton I., Asbeck P., Digital generation of RF signals for wireless communications with bandpass delta-sigma modulation, Proceeding of 2001 IEEE MTT-S International Microwave Symposium, pp. 2127-2130, (2001)
  • [6] Ge L.-J., Wang S., Xu W., A novel sigma-delta modulator based on OFDM signals, Acta Electronica Sinica, 45, 1, pp. 61-66, (2017)
  • [7] Raab F.H., Radio frequency pulse width modulation, IEEE Transactions on Communications, 21, 8, pp. 958-966, (1973)
  • [8] Feng H., Qin Y.-N., Lin Z.-H., The method of nonlinear error calibration for digital PWM structure in class D amplifier, Acta Electronica Sinica, 35, 8, pp. 1442-1445, (2007)
  • [9] Haslach C., Markert D., Frotzscher A., Pascht A., New efficient architectures for RF pulse width modulators, Proceeding of 2013 IEEE MTT-S International Microwave Symposium, pp. 1-3, (2013)
  • [10] Nuyts P.A.J., Reynaert P., Dehaene W., Afully digital PWM-based 1 to 3 GHz multistandard transmitter in 40-nm CMOS, Proceedings of the IEEE Radio Frequence Integrated Circuits Symposium, pp. 419-422, (2013)
12