一种快速测量和诊断相控阵天线的新方法

A Fast Measurement Method and Diagnosis of Phased Array Antennas

介绍了一种测量相控阵天线的新方法——换相测量法,给出了该方法的数学模型及其基于最优配相控制的解。该方法新的特点是被测天线和探头均固定不动,仅要求对天线各单元的配相进行控制,实际上是用电扫描方法来代替传统的机械扫描的方法,能大大提高测试的效率和精度。该方法充分利用了相控阵天线本身的结构信息和特点,能大大减小相控阵天线的测量和诊断时间,对测试环境的要求也较低,因此具有很强的实用性。本文模拟了应用该方法测量和故障诊断的全过程,模拟结果表明,该方法是正确、快速有效的。

A fast measurement method of phased array antennas called phase- shift measurement method is introduced in this paper. The mathematic model and the corresponding solution based on the optimized phase - control are developed. Since the antennas under test and the probe are stationary and only the phase of antenna element is needed to control, the method is actually an electrical scanning approach substituting the traditional mechanical scanning. Some characteristic information about antennas such as the element positions and the electric - field radiation pattern of the radiating element in the phased array is needed using this method, which can shorten the measurement time and decrease the demand of the measurement environment. The simulation of the measurement and diagnosis process is demonstrated here to illustrate the efficiency and accuracy of this method.