波导行波阵单元电导的计算

Computation of the element conductances in traveling wave fed arrays

用传输线理论计算分析了串馈行波天线阵中每个辐射单元的反射对天线阵口径幅度和相位的影响 ,提出严格计算线阵各辐射单元电导的迭代方法 ,在这种方法中考虑了损耗和反射因素 .对考虑反射与否两种情况下的天线方向图进行了比较 .结果表明 ,当线阵较大时 ,因反射引起的幅度和相位误差对天线方向图的影响较小 ,常规的计算方法即可满足要求 ;而当线阵较小时 ,这种影响明显 .为实现所需的线阵口面分布 。

The effect of the reflection from each radiating element in a series traveling wave fed array on the amplitude and phase of the array aperture distribution is studied using the transmision line theory. With the loss and reflection in mind, a rigorous iterative computation of the conductance of the radiating elements meeting the distribution of an array is presented. The pattern including the effect of the reflection and loss is compared with the ideal pattern. The result indicates that the effect on the pattern caused by the amplitude and phase errors is serious when the array is small, and this method is suitable for solving the problem. The effect is small when the array is large, in case the general method is satisfactory.