| 主动谐波消除多电平射频脉宽调制策略及其性能分析 |
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| 引用本文： | 陈剑斌,周强,朱蕾,张江. 主动谐波消除多电平射频脉宽调制策略及其性能分析[J]. 国防科技大学学报, 2021, 43(4): 128-135 |
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| 作者姓名： | 陈剑斌 周强 朱蕾 张江 |
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| 作者单位： | 陆军工程大学通信工程学院,江苏南京210007;国防科技大学第六十三研究所,江苏南京210007;国防科技大学第六十三研究所,江苏南京210007 |
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| 基金项目： | 国家自然科学基金资助项目(61631021) |
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| 摘 要： | 为降低全数字发信机(All-Digital Transmitters,ADTx)的输出谐波要求,提高系统宽频带工作性能,提出并实现适用于全数字发信机的多电平射频脉宽调制(Radio Frequency Pulse Width Modulation,RF-PWM)策略.该方法通过控制各子脉冲的脉冲宽度,在基波分量加权之和...
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| 关 键 词： | 全数字发信机 脉冲宽度调制 谐波抑制 自适应门限 增益系数 |
| 收稿时间： | 2020-01-03 |
Selective harmonic elimination multi-level RF-PWM strategy and performance analysis |
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| CHEN Jianbin,ZHOU Qiang,ZHU Lei,ZHANG Jiang. Selective harmonic elimination multi-level RF-PWM strategy and performance analysis[J]. Journal of National University of Defense Technology, 2021, 43(4): 128-135 |
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| Authors: | CHEN Jianbin ZHOU Qiang ZHU Lei ZHANG Jiang |
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| Affiliation: | College of Communications Engineering, Army Engineering University, Nanjing 210007, China;The Sixty-third Research Institute, National University of Defense Technology, Nanjing 210007, China |
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| Abstract: | In order to relax the filtering requirements and improve the wideband performance of the all-digital transmitters, a novel multi-level RF-PWM(radio frequency pulse width modulation) method for all-digital transmitters was introduced. This method limits the selective harmonics of RF-PWM signals by 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. For the third harmonic elimination, the corresponding 5-level RF-PWM scheme was presented. And the optimal gain index for 5-level RF-PWM scheme was also analyzed and proved. On this basis, the proposed scheme was verified by extensive simulations. |
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| Keywords: | all-digital transmitter pulse width modulation harmonic elimination adaptive thresholding gain index |
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