超宽带单极子天线脉冲传输特性的分析

以超宽带单极子天线为对象,提出一种实验测量结合数值模拟的简便方法,并将其推广用于脉冲体制超宽带通信系统的设计与性能分析,测量天线系统在特定频段上的频域传输幅度和相位特性并将其转换成时域传输特性.然后利用实验数据,结合数值仿真,分析了几种脉冲信号在系统中的传输特性.接着通过比较系统采用不同收发天线对情况下的传输特性,探讨了超宽带天线的性能评估和选择.实验与仿真结果表明,这种方法对脉冲信号的波形设计、超宽带天线的性能评估与优选具有良好的效果.

Analysis of Pulse Transmission Properties of UWB Monopole Antennas

In this paper,a simple method of combining antenna measurement with numerical simulation is proposed to study UWB monopole antennas. It is extended to the design of pulse based UWB communication system and the analysis of their transmission properties.First the transmission characteristics including the transmission amplitude and phase property at specified frequency band is measured and transformed into that in time domain.Using this experiment data together with numerical simulation,transmission properties of several shapes of pulses in the system are analyzed.Then through the comparison of the transmission properties of system employing different pairs of transceiver antennas,performance evaluation and selection of UWB antennas are explored.The results of experiment and simulation have shown that this method is good for in the pulse shape design performance evaluation and optimization of UWB antennas.