“高频”课程中抽头变换的应用条件分析  

Analysis of Application Conditions of Tap Transformation in High Frequency Electronic Circuit

作　　者：于红旗[1] 盖龙杰 杜湘瑜[1] 罗笑冰 YU Hongqi;GAI Longjie;DU Xiangyu;LUO Xiaobing(School of Electronic Science,National University of Defense Technology,Changsha 410005,China)

机构地区：[1]国防科技大学电子科学学院,长沙410073

出　　处：《电气电子教学学报》2022年第3期64-67,共4页Journal of Electrical and Electronic Education

基　　金：2018年湖南省教学改革研究项目;国防科技大学2019年学校本科和任职教育教学研究课题(U2019105)。

摘　　要：在“高频电子线路”中,抽头电路可以减小信号源内阻和负载对LC回路的影响,得到广泛应用。在教材中,对抽头变换的条件未做出明确说明,也未对多负载情况下(包含电容)的抽头变换作深入的研究,导致出现相同的题目在不同教辅材料中有不同答案的情况。针对教材中出现的两种多负载抽头变换计算方法进行分析,从理论上推导了抽头变换的适用条件,并通过Multisim来验证计算结果。In High Frequency Electronic Circuits, tap circuit can reduce the influence of internal resistance of signal source and load on LC circuit, so it is widely used. In the textbook, the conditions of tap changing are not clearly explained, and the tap changing under multi-load(including capacitance) is not deeply studied, which leads to the situation that the same topic has different answers in different teaching materials. Analyzing the two calculation methods of multi-load tap transform in textbooks, this paper theoretically deduces the applicable conditions of tap transform, and verifies the calculation results by Multisim.

关 键 词：抽头变换 MULTISIM仿真 谐振频率 

分 类 号：G426[文化科学—课程与教学论]