基于ARM的毫米波微带天线测试系统

Millimeter Wave Microstrip Antenna Test System Based on ARM

以提升天线测试效果,设计基于ARM的毫米波微带天线测试系统。利用信号发生器产生单频信号,由射频电缆传输至网络控制模块;通过网络控制模块预处理单频信号,并传输至发射天线;发射天线接收预处理的单频信号后,将其转换成电磁波发射至自由空间;待测天线接收自由空间辐射的电磁波后,将其转变为窄带信号,并由射频电缆传输至网络控制模块;利用网络控制模块预处理窄带信号并传输至频谱分析仪;频谱分析仪依据接收的窄带信号,计算待测天线的方位角与天线增益等天线相关参数,完成毫米波微带天线测试;通过交换机传输测试结果至计算机内,由计算机为用户呈现天线测试结果;计算机根据天线测试结果,发送天线控制指令至ARM控制器;ARM控制器接收控制指令过后,解析控制指令并启动天线转台,控制待测天线。实验证明:该系统可有效计算毫米波微带天线的方位角与增益,且测试的方位角、增益,与仿真的方位角、增益吻合度较高,说明所测试的毫米波微带天线具备较优的使用效果。

Design a millimeter wave microstrip antenna testing system based on ARM to improve antenna testing effectiveness.U-sing a signal generator to generate a single frequency signal,which is transmitted by an RF cable to the network control module;Pre-process the single frequency signal through the network control module and transmit it to the transmitting antenna;After receiving the preprocessed single frequency signal,the transmitting antenna converts it into electromagnetic waves and emits them into free space;After receiving electromagnetic waves radiated from free space,the tested antenna converts them into narrowband signals and transmits them to the network control module through RF cables;The narrowband signal is preprocessed by the network control module and transmitted to the spectrum analyzer;The spectrum analyzer calculates the azimuth angle,antenna gain and other antenna related pa-rameters of the antenna to be tested according to the received narrowband signal,and completes the millimeter wave microstrip anten-na test;Transfer the test results to the computer through the switch,and the computer presents the antenna test results to the user;The computer sends antenna control commands to the ARM controller based on the antenna test results;After receiving the control command,the ARM controller parses the control command and starts the antenna turntable to control the antenna to be tested.Experi-ments have shown that the system can effectively calculate the azimuth and gain of millimeter wave microstrip antennas,and the tested azimuth and gain are in good agreement with the simulated azimuth and gain,indicating that the tested millimeter wave microstrip antenna has excellent performance.