数字阵列天线测量方法研究

提出了数字阵列天线应测量的技术指标体系。基于数字阵列天线各通道的幅度相位可控,推导出了数字阵列天线方向图的中场测量公式。在已知数字阵列TR组件接收电路增益的基础上,给出了数字阵列天线接收增益测量方法。为避免分别测量数字阵列天线的有源电压驻波比和发射增益,给出了等效全向辐射功率的测量方法。实验结果验证了数字阵列天线方向图和接收增益测量方法的正确性。

Measurement methods for a digital array antenna

The technical parameters to be measured for a digital array antenna are proposed. The mid-field measurement formula is deduced for the antenna pattern based on the controllable phases and amplitudes in each channel. With the gain of the receiving circuit of the TR module known, the measurement method for the receiving gain is given. The Effective Isotropic Radiated Power （EIRP） measurement method is also presented to avoid measuring the active VSWR and the transmitting gain respectively. The test results verify the correctness of the measurement methods for the antenna pattern and the receiving gain.