集成天线的多通道瓦片式T/R组件测试

Test on multi-channel tiled T/R components with integrated antenna

雷达T/R组件的集成度越来越高,已出现了将天线也集成在组件上的多通道瓦片式收发T/R组件。由于天线的集成,传统的传导测试方法无法对这种新结构T/R组件的电路性能进行直接测量。针对该问题,提出一种辐射对比测试方法,采用辐射法先对T/R组件天线单元进行测试,然后对集成天线的T/R组件进行测试,最后将天线对T/R组件电路性能的影响扣除,得到T/R组件电路的各项性能参数。在分析测试原理的基础上,对一种集成天线的多通道X波段的瓦片式T/R组件发射峰值功率、通道间相位一致性和接收增益等指标进行了试验测试,测试结果与电路直接测试对比,幅度误差<0.69 dB,相位误差<10.5°,满足工程应用需求。

The integration of radar T/R modules has become higher due to the rapid development of integrated circuits,and multi-channel tile type T/R modules that are integrated with antennas have emerged.Due to the integration of the antenna,the original component test method is no longer applicable to the transceiver of the new structure.An auxiliary radiation contrast test method is proposed,which uses the radiation method to test the component antenna unit firstly,then tests the components of the integrated antenna,and finally deducts the influence of the antenna on the component circuit performance,and obtains the performance parameters of the component circuit.Based on the analysis and testing principle,a multi-channel X-band tile T/R component with integrated antenna is utilized to test the transmit power,receive gain and phase consistency.The test results are compared with that of direct test of the circuit.The amplitude error is<0.63 dB and the phase error is<10.5°,which meets the engineering application requirements.