direct digital synthesizer meaning in Chinese
直接数字式频率合成器
Examples
- Design of bessel low pass filter in direct digital synthesizer
直接数字合成器中贝塞尔低通滤波器设计 - Through the research of direct digital synthesizer ( dds ) used as a divider in phase lock loop ( pll ) , a frequency synthesizer with small frequency resolution ratio and high purity frequency spectrum can be realized
摘要通过对直接数字合成器在锁相环路中作为分频器应用的研究，使频率合成器可以在实现超细频率分辨率的同时达到高的频谱纯度。 - This paper studies the system and hardware design of the arbitrary waveform generator based direct digital synthesizer in detail . and a theoretical analysis of the system performance is also given
本文主要研究了基于直接数字合成( directdigitalsynthesizer )技术的任意波形发生器( arbitrarywaveformgenerator )的整体方案和核心部分的硬件设计。 - The developed module are the arbitrary waveform generator based on dos ( direct digital synthesizer ) technology as a signal source of testing system and the common testing device such as virtual spectrum analyzer - , virtual digital storage oscilloscopes virtual frequency counter etc
所开发的模块有，采用dds技术实现的任意波形发生器作为测试系统中的信号源，以及常见的信号测量设备，如虚拟频谱分析仪，虚拟数字存储示波器，虚拟频率计数器等虚拟仪器。 - This paper deals with fundamental principles and characters of direct digital synthesizer ( dds ) , analyzes the principle of dds in modulation , also presents various basic schemes to implement gmsic 4dqpsk and qam , and makes an initial analysis on their performances
本文介绍了直接数字频率合成( directdigitalsynthesizer ， dds )的基本原理及特性，分析了dds用于调制的原理，并给出了实现gmsk 、 / 4dqpsk和qam等调制的多种方案，同时对其性能进行初步分析。