基于DDS的幅度调制解调演示仪的设计  

Design of Demonstration Instrument for Amplitude Modulation and Demodulation Based on DDS

作　　者：蒲小年 李智豪 劳健涛 戚慧珊 陈泽业 唐小煜[1] Pu Xiaonian;Li Zhihao;Lao Jiantao;Qi Huishan;Chen Zeye;Tang Xiaoyu(College of Physics and Telecommunications Engineering, South China Normal Universit)

机构地区：[1]华南师范大学物理与电信工程学院

出　　处：《自动化与信息工程》2018年第2期17-22,共6页Automation & Information Engineering

摘　　要：基于直接数字合成技术,混频器、解调对数放大器等器件,设计一种简易幅度调制解调演示仪。该演示仪主要器件采用集成电路,简化电路规模,有效减少外部干扰。学生可接入示波器对调制、解调波形进行观测,实验现象明显,实验教学效果良好。By using the Direct Digital Synthesizer, Mixer and Logarithmic Amplifier, we designed a simple demonstration device for the amplitude modulation and demodulation demonstration. The device have lower working voltage, lower power consumption, its main component are integrated circuit, which can simplify the circuit and help to prevent the outerinterferences.

关 键 词：调制解调 直接数字合成技术 通信实验 演示仪 

分 类 号：TN915.05[电子电信—通信与信息系统]