基于DSP Builder的DDS设计及其应用(新)_毕业设计论文网 关键字:直接数字式频率合成; DSP Builder; 现场可编程门阵列 [gap=1374]Key Words：DDS;DSP Builder;FPGA
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直接数字式频率合成器 Direct Digital Synthesizer ; Direct Digital Frequency Synthesizer ; DDS ; DDS-Direct Digital Synthesizer
直接式数字频率合成器 direct digital frequency synthesizer
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着重研究了直接数字式频率合成器（DDS）的频谱特性。
The spectrumcharacteristic of the direct digital frequency synthesizer(DDS )is mainly stud-ied in this paper.
采用现场可编程门阵列（FPGA）基于小数分频器的原理，实现直接数字式频率合成器（DDS）。
The realization of direct digital synthesizer (DDS) by FPGA based on the principle of fraction division is introduced.
广泛采用的直接数字式频率合成方法，却面临输出频率上限难以提高和输出杂散的难以抑制两个难题。
Therefore, the frequency synthesizer works in millimeter wave band is mostly designed and realized by the way of indirect phase lock frequency synthesis, based on specific integrated circuit.
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