摘要
针对当前无线通信系统对高效射频功放技术的实际需求,梳理了射频开关功放(SMPA)技术的研究进展,同时对比了不同结构射频SMPA的应用特性。在此基础上,首次采用多比特带通Delta–Sigma调制器(BPDSM)和多电平SMPA,提出一种新的基于电压型D-类(VMCD)功放的全数字发信机架构,并基于现场可编程逻辑门阵列(FPGA)器件和分立元件实现了全数字发信机。硬件测试结果表明,30～88 MHz超短波频率下,系统平均输出功率为15.2 W,效率达到60%以上。
Focusing on the application requirements on high-efficiency radio frequency power amplifier in wireless communication system,the studies and applications of radio frequency Switch-Mode Power Amplifier(SMPA) technology are surveyed. The application characteristics of SMPA under different structures are also compared. By using the multi-bit Band-Pass Delta-Sigma Modulator(BPDSM) and multi-level SMPA, a novel full-digital transmitter structure based on Voltage-Mode Class-D(VMCD) power amplifier is proposed. And the full-digital transmitter is implemented based on the Field Programmable Gate Array(FPGA) and lump components. The hardware measurement results show that the transmitter achieves a power efficiency greater than 60% around an average output power of 15.2 W in 30-88 MHz frequency.
作者
陈剑斌
朱蕾
张江
周强
CHEN Jianbin;ZHU Lei;ZAHNG Jiang;ZHOU Qiang(Institute of Communication Engineering,Army Engineering University,Nanjing Jiangsu 210007,China;The 63rd Institute,National University of Defense Technology,Nanjing Jiangsu 210007,China)
出处
《太赫兹科学与电子信息学报》
北大核心
2019年第2期263-268,共6页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金重点资助项目(61631021)
关键词
开关功放
D-类
E-类
全数字发信机
射频
Switch-Mode Power Amplifier
Class-D
Class-E
full-digital transmitter
radio frequency
