Multisim在高频电路实验中的应用
摘 要:针对传统高频电路实验教学中存在的问题,提出在实验教学中引入Multisim进行辅助分析与设计。利用Multisim对高频电路中的典型电路振幅调制及解调、丙类功率放大器进行了仿真研究,其各项结果与理论一致,且可以很方便地改变元件或电路中参数,观察不同条件下电路的工作情况。将虚拟实验和传统实验有机结合起来,能更好地提高学生的动手能力和探索精神。
关键词:Multisim; 高频电子线路; 振幅调制; 丙类功放
中图分类号:TP274 文献标识码:A
文章编号:1004-373X(2010)12-0048-03
Application of Multisim in High Frequency Circuit Experiment
ZHANG Ning, XIN Xiu-fang
(Department of Physics and Information Engineering, Shangqiu Normal University, Shangqiu 476000, China)
Abstract: The Multisim simulation tool is introduced in experimental teaching for assisted analysis and design to solve the problems existed in traditional high frequency circuit experiment. The class-C high-frequency resonance power amplifier, amplitude modulation and demodulation are simulated by Multisim, which are typical circuits of high frequency circuit. All of the results are identical with the theory, and it is convenient to change the parameters and component of circuit, as well as observe the working flow of circuit in different conditions. The virtual experiment is integrated with traditional experiment, what can improve the students′ operational and groping ability.
Keywords: Multisim; high frequency circuit; amplitude modulation; class-C power amplifier
0 引 言
高频电路在通信系统和设备中占有重要的地位,是电子信息工程专业的必修课,是理论和技术性都很强的一门课程。高频电路实验是对专业理论学习的补充、延伸、巩固和提高。通过实验教学达到加深理解所学的理论知识,培养理论联系实际、分析与处理实际问题的能力。但是高频实验中存在着一个最大的问题就是实验不好做,由于实验对仪器精度要求高,高频电路易受外界的干扰,分布电容、分布电感的存在对实验电路影响大,实验...
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