变容管的非线性性能及时变参量的分析

在变容管的各种参量应用中,变容管的非线性性能成为最基本的重要资料。提高变容管的非线性度,在应用中可以相应减小注入功率。在研究低注入或其他非正弦波注入应用的特性时,更应对变容管时变参量的基波及谐波分量与变容管非线性度及注入电压比等之间的关系深入研究。本文目的在于分析上述问题,选用合适的非线性性能的表示法,采用图解法求出变容管归一化时变参量的基波及谐波分量的特性,并绘出这些分量与变容管非线性度γ,注入电压比m₁之间的关系曲线。这些通用曲线在分析变容管的各种参量应用中可作为重要参考资料,并举例示出这些曲线的用途。

ANALYSIS OF THE NONLINEAR CHARACTERISTICS AND THE PUMPED TIME-VARYING PARAMETERS OF THE VARACTORS

One of the most fundamental quantities in the study of various parametric applications of the varactors is its nonlinear characteristics. The required pumping power can be greatly reduced if a varactor having much higher nonlinearity is employed. For the purpose of studying either lower pumping applications or non-sinusoidal pumping applications of the varactor, a knowledge of both the fundamental and the harmonics of the pumped time-varying parameters of the varactors is highly desirable. An analysis on the proper selection and normalization of the non-linear characteristics of the varactor is offered. A graphical method to analyze the fundamental and the harmonics of the pumped time-varying parameters was employed, and curves relating these components to the nonlinearity of the varactor γ, and the pumping voltage ratio m₁ were obtained. These curves serve as one of the fundamental references in various varactor parametric applications. Sample applications are also included as illustrations.