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本文从势垒的角度 ,分析了金属结的非线性伏安特性 ,并将其作幂级数展开 ,讨论了金属结在单频和多频微波场激励下 ,由于再辐射特性产生的二次和三次谐波电流的表达式以及它们与入射激励场大小的关系 .论文详细地讨论了数值分析过程 ,并给出样例的数值结果 .此种方法具有很大的通用性 ,可以用于各类金属结点的分析 .计算结果表明 :当入射激励场较小时 ,再辐射产生的三次谐波幅度将大于二次谐波幅度 ,这与PN结的再次辐射特性 (二次谐波幅度大于三次谐波幅度 )正好相反 .但当入射激励场的场强过大时 ,则二次谐波幅度将会大于三次谐波幅度 ,这与PN结的区别将会减小 .较低功率照射下金属结与PN结再辐射特性的区别正是许多实用探测仪器工作的理论依据 ,但本文提醒使用它们时注意在功率上的限制
In this paper, the non-linear voltammetric characteristics of the metal junction are analyzed from the perspective of the potential barrier. The power series of the metal junction is expanded. The effects of the re-radiation characteristics of the metal junction under the single-frequency and multi- And the third harmonic current expression and their relationship with the size of the incident excitation field.This paper discusses in detail the numerical analysis process and gives the numerical results of the sample.This method has great versatility and can be used for The results show that when the incident excitation field is small, the amplitude of the third harmonic generated by reradiation will be greater than the amplitude of the second harmonic, which is related to the re-radiation characteristics of the PN junction (the second harmonic amplitude is greater than three times Harmonic amplitude) is the opposite, but when the field strength of the incident excitation field is too large, the amplitude of the second harmonic will be greater than the third harmonic amplitude, which will reduce the difference between the PN junction lower metal irradiation under the metal The difference between the junction and PN junction re-radiation characteristics is the theoretical basis for many practical detection instruments work, but this article reminds us to pay attention to the power limitations when using them