摘要
利用Multisim 10.1软件对通信接收机中变频电路进行了虚拟仿真分析,通过改变调幅信号的载波频率大小和改变正弦波振荡器电路的某些参数来分析变频前和变频后的波形变化规律。得出的虚拟仿真结果与实际理论分析相吻合,从而客观地体现了变频电路的实际工作特征。通过实例验证了将Multisim 10.1合理引入到电子电路实验教学后,使许多抽象、枯燥的电子线路理论教学变得具体和生动。
The frequency conversion circuit in communication receiving machine is simulated and analyzed by Multisim 10, 1 software, The wavefornl changing of belt）re and after frequency conversion is obserwved via changiilg the carrier wave＇s frequency of amplitude modulation and some of the parameters in the sinusoidal oscillation circuit. The resuhs of virtual simulation art, consistent with the lheoretical analysis and the characteristics of frequency conversion circuit are embodied objectively. The instance results prove that it could nmkc some abstract and boring teaching become concretely and lively by properly introducing Muhisim 10. 1 to electronic circuit experimental teaching.
出处
《实验技术与管理》
CAS
北大核心
2014年第3期84-86,90,共4页
Experimental Technology and Management
基金
国家青年科学基金项目(11103002)
河南大学民生学院教育教学改革研究项目资助计划(MSJG2013-12)
关键词
通信接收机
变频电路
虚拟仿真
MULTISIM
communication receiving machine
frequency conversion circuit
virtual slmulation
Multisim
