双边耦合振荡器阵列自由振荡频率调节方法仿真及实验研究

Simulations and Experiments Study on Natural Frequencies Tuning Method of Nearest-Neighbor Coupled Oscillators

耦合振荡器阵列可以通过调节单元的自由振荡频率实现阵面的特定相位分布,从而不用移相器实现有源天线阵波束电扫描。文中推导了双边耦合振荡器阵列实现阵面特定的相位分布时各单元自由振荡频率应满足的方程组。从方程中得到,如果调节首单元的自由振荡频率稍高于阵列内部单元,同时调节末单元的自由振荡频率稍低于阵列内部的单元,则可得到阵面正梯度的相位分布。但从另外几篇公开发表的相关论文的分析中却得到了相反的结论,文中提出了验证方法,并利用仿真和实验进行了验证,证明了文中结论的正确性。

Coupled oscillators can realize desired phase distribution on the array by tunning natural frequencies of the elements, so it can be used in nonlinear active antenna array to control beam scanning. According to the phase dynamics and desired phase gradient in the nearest-neighbor coupled oscillator array, conditions that the natural frequencies of oscillator elements should be satisfied are gotten in the article. From the conditions we must tune natural frequency of the first element lower and tune natural ...