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此为使用DDS直接数字频率合成器之设计报告,作者相当的详细介绍DDS之原理以及使用Altera之FPGA做设计,供使用者参考.-This is the use of DDS Direct Digital Synthesizer Design report, the authors considerable detail on the principle of DDS and the use of Altera
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频率合成技术在现代电子技术中具有重要的地位。在通信、雷达和导航等设备中,它可以作为干扰信号发生器;在测试设备中,可作为标准信号源,因此频率合成器被人们称为许多电子系统的“心脏”。直接数字频率合成(DDS——Digital Direct Frequency Synthesis)技术是一种全新的频率合成方法,是频率合成技术的一次革命。本文主要分析了DDS的基本原理及其输出频谱特点,并采用VHDL语言在FPGA上实现。对于DDS的输出频谱,一个较大的缺点是:输出杂散较大。针对这一缺点本文使用了两个方法
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直接数字频率合成器AD9852的原理及应用-Direct Digital Synthesizer AD9852 and application of the principle
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本文主要介绍的是采用直接数字频率合成的短波信号发生器,它主要以微电脑控制部分、直接数字频率合成(DDS)部分、数字锁相环频率合成部分、背光液晶显示部分、功率放大部分等组成。该软件系统采用菜单形式进行操作,操作方便明了,增加了很多功能。它通过启动DDS后,把内存缓存区的数据送到DDS后输出相应的频率,并把数据转换为BCD码,送到液晶显示器进行显示。该系统输出稳定度、精度极高,适用于当代的尖端的通信系统和精密的高精度仪器。-This paper describes the use of direct
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AD9910说明书。AD9910是一款内置14 bit DAC的直接数字频率合成器(DDS),支持高达1 GSPS的采样速率。AD9910采用高级DDS专利技术,在不牺牲性能的前提下可极大降低功耗。DDS/DAC组合构成数字可编程的高频模拟输出频率合成器,能够在高达400 MHz的频率下生成频率捷变正弦波形。-AD9910 manual. AD9910 is a built-in 14 bit DAC for direct digital frequency synthesizer (DDS),
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AD9954: 400 MSPS, 14-Bit, 1.8 V CMOS, Direct Digital Synthesizer. IBIS model.
The AD9954 is a direct digital synthesizer (DDS) that uses advanced technology, coupled with an internal high speed, high performance DAC to form a complete, digitally p
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AD9910: 1 GSPS, 14-Bit, 3.3 V CMOS Direct Digital Synthesizer. IBIS model.
The AD9910 is a direct digital synthesizer (DDS) featuring an integrated 14-bit DAC and supporting sample rates up to 1 GSPS.-AD9910: 1 GSPS, 14-Bit, 3.3 V CMOS Direct
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AD9912: 1 GSPS Direct Digital Synthesizer with 14-Bit DAC. IBIS model.
The AD9912 is a direct digital synthesizer (DDS) featuring an integrated 14-bit DAC. The AD9912 features a 48-bit frequency tuning word (FTW), which can synthesize frequenci
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数字闹钟(Digital Clock)、直接数字频率合成器DDS(Direct Digital Synthesis)。-Digital Alarm Clock (Digital Clock), direct digital frequency synthesizer DDS (Direct Digital Synthesis).
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Designing of Direct Digital Synthesizer
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介绍直接数字频率合成器的论文,非常的详细,还有VHDL源代码-Introduction of Direct Digital Frequency Synthesizer papers, very detailed, as well as VHDL source code
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直接数字频率合成器(Direct Digital synthesizer)是从相位概念出发直接合成所需波形的一种频率合成技术。一个直接数字频率合成器由相位累加器、加法器、波形存储ROM、D/A转换器和低通滤波器(LPF)构成-Direct digital frequency synthesizer (Direct Digital synthesizer) is the concept of direct synthesis from the requirements phase of a wav
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The LogiCORE™ IP DDS (Direct Digital Synthesizer)
Compiler core sources sinusoidal waveforms for use in
many applications. A DDS consists of a Phase Generator
and a SIN/COS Lookup Table. These parts are available
individually or combined
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DDS直接数字频率合成器,能产生正弦波,方波,锯齿波,三角波四种波形,同时能在12864上显示波形类型和频率,用FPGA verilog实现的-DDS direct digital frequency synthesizer can produce sine, square wave, sawtooth wave, triangle wave four waveform, while in the 12864 on display the waveform type and frequency
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AD9914是一款直接数字频率合成器(DDS),内置一个12位数模转换器,目标工作速率最高达3.5 GSPS。该器件采用先进的DDS技术,连同高速、高性能数模转换器,构成数字可编程的完整高频合成器,能够产生最高1.4 GHz的频率捷变模拟输出正弦波。-The AD9914 is a direct digital synthesizer (DDS) featuring a 12-bit DAC targeted at operating up to 3.5 GSPS. The AD9914 use
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采用CORDIC算法的直接数字频率合成器的设计-CORDIC algorithm uses direct digital frequency synthesizer design
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