单元天线 meaning in Chinese

element antenna
elementary antenna

In the purpose of enhance the circular polarization , the sub - array have used a phase transfer circuit which made each patch have 90deg phase difference in turn . matching branches are added to the full array to enhance the bandwidth of the antenna
在4单元天线子阵的设计过程中采用了移相电路,使4单元间的相位依次相差90 ,展宽了天线的圆极化轴比带宽。