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Description: 用modelsim仿真一个正弦波产生程序-modelsim simulation using a sine wave generated procedures
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Size: 68608 |
Author: 阿乐 |
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Description: 摘要：AD9852是美国ANALOGDEVICES公司生产的新型直接数字频率合成器(DDS)，具有频率转换速度快(小于lt~s)、频谱纯度高、工作温度范围宽(一25℃～+85℃)、集成度高等特点，是一种使用方便灵活、功能较强的芯片。AD9852由带有48位相位累加的数控振荡器、可墒程参考时钟倍乘器、反向正弦滤波器、计数倍乘器、两个300MHz12住数模转换器、高速模拟比较器和接口逻辑组成。可用于本振合成回路，高精度时钟发生器和FSK／／3PSK调制。文中介绍了AD9852的工作原理、引脚功能以厦具体应用。 -Abstract: AD9852 is Analog Devices Inc. The United States produced a new type of direct digital synthesizers (DDS), with frequency conversion speed (less than lt ~ s), the spectrum of high purity, the working temperature range of width (1 25 ℃ ~+ 85 ℃) , high integration, is a flexible and easy to use, more powerful chips. AD9852 by a cumulative 48 DCO phase can be moisture-way Multiplier times the reference clock, reverse sine filter, multiplying count, two 300MHz12 live digital, high-speed analog comparator, and interface logic composition. Can be used in the synthesis loop vibration, high-precision clock generator and FSK// 3PSK modulation. This paper introduces the working principle of AD9852, pin functions to specific application of Xiamen.
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Size: 126976 |
Author: 梅名 |
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Description: 本设计采用AT89552单片机，辅以必要的模拟电路，实现了一个基于直接数字频率合成技术(DDS)的正弦谊号发生器。设计中采用DDS芯片AD9850产生频率1KHZ~10MHZ范围内正弦波，采用功放AD811控制输出电压幅度， 由单片机AT89S52控制调节步进频率1HZ。在此基础上，用模拟乘法器MC1496实现了正弦调制信号频率为1KHZ的模拟相度调制信号；用FPGA芯片产生二进制NRZ码,与AD9850结合实现相移键控PSK、幅移键控ASK、频移镇键FSK。-AT89552 the single-chip design, supplemented by the necessary analog circuits, based on the realization of a direct digital frequency synthesis (DDS) generator of sinusoidal No. Friends. The design of DDS chip AD9850 produced using 1KHZ ~ 10MHZ frequency range of sine wave, the AD811 control amplifier output voltage range of from single-chip AT89S52-conditioning step frequency control 1HZ. On this basis, the use of analog multiplier MC1496 has sinusoidal frequency modulation signal 1KHZ degree analog phase modulated signal generated by FPGA chip NRZ binary code, combined with the AD9850 to achieve phase shift keying PSK, ASK ASK, frequency Shift key town of FSK.
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Size: 208896 |
Author: 何蓓 |
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Description: DDS频率精确步进100HZ，拔码选择FSK，PSK，FM，ASK功能。-dds base on vhdl
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Size: 4042752 |
Author: 李逵 |
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Description: 用简单的DDS方法产生的波形来调制ASK以及FSK,使其调制更简单-The DDS with a simple way to generate the waveform modulation ASK, PSK, FSK, make it more simple modulation
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Size: 105472 |
Author: JINJIN |
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Description: dds芯片的FSK调制程序 控制芯片是2407a-dds chip FSK modulation process control chip is a 2407a
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Size: 29696 |
Author: xiaoyin |
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Description: DSP浮点处理器实现FFT,A/D转化器采集DDS发出的FSK信号，对其信号进行FFT变换-DSP floating-point processor realize FFT, A/D converter FSK signal A DDS collection of the signal for FFT transformation
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Size: 110592 |
Author: 肖信纳 |
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Description: 在QUARTUS II 8.0下做的基于DDS的多功能调制器，可实现ASK、FSK、BPSK调制。用SIGNALTAP仿真测试正确。-A In multi-function modulator based on DDS in QUARTUS II 8.0 , can realize the ASK, FSK, BPSK modulation. With SIGNALTAP simulation test right.
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Size: 3817472 |
Author: 高飞 |
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