基于Multisim仿真软件在高频实验教学中的应用研究

Research on application of simulation software in high frequency experimental teaching based on Multisim

针对传统高频电路实验箱实验教学的不足,分析了用电路仿真软件辅助实验教学的必要性,通过运用Multisim对二极管包络检波电路进行虚拟仿真实验,研究了二极管包络检波电路正常检波情况、惰性失真现象以及负峰切割失真现象等,通过不断改变电路元件参数,并进行对比,观察得到:二极管检波电路的相关特性、虚拟仿真实验结果和理论分析计算结果相一致。实践证明:将Multisim应用于高频电子线路仿真实验教学,可以克服实验教学中仪器仪表的不足以及各种干扰现象,使实验更加灵活,更具有创新性,也有利于提高学生的学习积极性和主动性。

In view of the traditional high frequency circuit experiment box practice teaching insufficient, this paper analyzes the application of circuit simulation software experimental teaching. Through the use of Multisim of diode envelope detection circuit for virtual simulation experiment, this paper researches diode envelope detection circuit, the normal detection, inert distortion phenomenon and the negative peak clipping distortion phenomenon. Through continuous change of circuit component parameters, this paper observes and compares diode detector circuit related characteristics, which shows that virtual simulation experiment results and theoretical calculation results are consistent. The results prove by practice that the application of Multisim in simulation experiment of high frequency electronic circuit teaching can overcome the experiment teaching instrument and all kinds of interferences, so that the experiment is more flexible, more innovative, more beneficial to improve students＇ learning enthusiasm and initiative.