| 基于FPGA的PSWF脉冲信号发生器设计 |
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| 引用本文： | 张晨亮 王红星 张 榛,等.基于FPGA的PSWF脉冲信号发生器设计[J].电子测量技术,2014(1):76-80,88. |
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| 作者姓名： | 张晨亮 王红星 张 榛 等 |
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| 作者单位： | 海军航空工程学院,烟台264001 |
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| 摘 要： | 椭圆球面波函数(PSWF)具有时频域最佳能量聚集性及双正交性等优良特性,是极具前途的非正弦函数。基于椭圆球面波函数的非正弦时域正交调制系统充分利用了PSWF的优点,与OFDM相比,其具有功率利用率高、系统结构简单的优点。在基于PSWF的非正弦时域正交调制样机中,为了产生多路PSWF脉冲信号,设计了具有调制功能的脉冲信号发生器。信号发生器以Virtex-6系列FPGA器件XC6VLX240T作为处理器,结合高速D/A转换器AD9764和宽带放大器AD8009,采用直接频率合成(DDS)技术实现了高速信号的产生,数据更新率高达125 Msps。经过测试,该信号发生器具有精度高、转换速度快、输出波形失真小等优点。
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| 关 键 词： | 椭圆球面波函数 AD AD 直接数字频率合成 Virtex- |
Design of PSWF pulse signal generator based on FPGA |
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| Zhang Chenliang Wang Hongxing Zhang Zhen Kang Jiafang.Design of PSWF pulse signal generator based on FPGA[J].Electronic Measurement Technology,2014(1):76-80,88. |
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| Authors: | Zhang Chenliang Wang Hongxing Zhang Zhen Kang Jiafang |
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| Affiliation: | Zhang Chenliang Wang Hongxing Zhang Zhen Kang Jiafang (Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001,China) |
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| Abstract: | Prolate spheroidal wave functions（PSWFs） are very promising non sinusoidal functions with the best energy concentration in time and frequency domain and the double orthogonality The nonsinusoidal orthogonal modulation system in time domain based on PSWF have higher power efficiency and simpler structure of system than communication based on orthogonal frequency division multiplexing （OFDM） technology. For the prototype system based on the nonsinusoidal orthogonal modulation method in time domain,in order to achieve multi-channel PSWF pulse signals,the pulse signal generator with modulation function has been designed. The PSWF pulse signal generator takes the Virtex-6 FPGA XC6VI.X240T as the processor,combined with high-speed digital-to-analog converter AD9764 and wideband amplifier AD8009, using DDS technology to achieve high-speed signal, the update rate reached 125 Msps. The testing results indicate that the PSWF pulse signal generator has the advantages of high precision,fast update rate and low output waveform distortion. |
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| Keywords: | PSWF（prolate spheroidal wave function） AD9764 AD8009 DDS Virtex 6 |
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