本文叙述了单个有源发射天线、单个有源接收天线、有源发射天线阵及有源接收天线阵的工作原理和基本特性。详细讨论了计算有源发射天线阵和有源接收天线阵的自阻抗与互阻抗的公式。并给出了一些实验结果。 This paper describes the working principle and basic characteristics of single active transmitting antenna, single active receiving antenna, active transmitting antenna array and active receiving antenna array. The formulas for calculating the self-impedance and trans-impedance of active transmitting antenna array and active receiving antenna array are discussed in detail. Some experimental results are given.