车载多天线间的相互干扰特性

采用矩量法对车载多天线间的相互干扰特性进行了分析，将多天线系统等效为微波网络，然后采用矩量法求该网络的导纳矩阵Y.利用该导纳矩阵对天线间互耦特性进行分析,同时计算天线的近场分布.以实际工程中遇到的问题作为算例,其模型复杂,计算量大.算例中主要考虑发射天线的谐波干扰,计算天线间的最大耦合度和实际耦合度,并给出了实际耦合度.经计算分析证明,该方法理论正确,计算精度较高,对车载天线的安装、配置有较强的指导意义。

Analysis of interference among vehicula multipe antennas

The moment method is used for the analysis of interference among vehicular multiple antennas in this paper. The multiple antenna system is equivalent to a microwave network, and the admittance matrix of the network can be obtained. Using the admittance matrix, we can analyze the characterisitc of coupling between two antennas, with the near field of the antenna analyzed by the MOM. One of the engineering problems is presented with complex modules and great efforts. Harmonic interference among antennas is emphasized and the level of the highest and real coupling is computed. We give the real coupling level. It is proved by analysis that the method is theoretically correct gives high calculation accuracy and can be used as a guidance for the installation and disposition of vehicular multiple antennas.