包络检波基本电路非自治状态方程的分析

纺织高校基础科学学报990403

纺织高校基础科学学报

BASIC SCIENCES JOURNAL OF TEXTILE UNIVERSITIES

1999年　第12卷　第4期　Vol.12　No.4　1999

包络检波基本电路非自治状态方程的分析

潘　文　庄玉欢

摘要　对包络检波的基本电路建立非自治状态方程,并根据其稳定解的周期性,推导出电路的电荷量守恒方程,并通过假设的条件近似和简化方程.分别分析了输入信号为脉冲波、三角波、余弦波3种波形,得到其近似解,与其它资料或实验的结果完全一致.指出了本分析方程存在的不足之处,使检波电路得到更加全面的分析与认识.

关键词　检波　电荷量守恒方程　非自治　非线性

中图分类号　TN 763.1

Analysis on the Non-autonomy Statement Equation

of Envelope Detection Basic Circuit

Pan Wen　Zhuang Yuhuan

(Elec.Dept.,Changzhou Industrial Technology College,Changzhou,Jiangsu 213002,PRC)

Abstract　The non-autonomy statement equation basic circuit was established in this paper,and the conservation electric-charge equation was worked out basing the periodicity of its stable solution.The approximate equation was simplified under conditions of some hypothesis.The solutions were gotten when the input signals were the pluse-wave,the trigonometric-wave and the cosine-wave respectively that are identical with other s reference or the experiment results.At last,the shortcoming of this method was pointed out as that the envelope detection circuit is understood and analyzed.

Keywords　detection circuit,conservation electric-charge,non-autonomy equation,non-lineal

大信号包络检波电路如图1所示.该电路由二极管D和R L,C低通滤波器相串接构成.本电路可根据D, R L,C参数的不同而构成整流电容滤波电路.

图 1　包络检波基本电路原理图

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