Planar Archimedean antenna has some advantages as wideband, small volume and good performance in circularly polarizing, so it has broad appliance prosperity.
平面螺旋宽带天线具有频带较宽、体积较小、圆极化性能较好等特点，应用范围很广。
Although the planar spiral antenna has characteristics of wide bandwidth, small volume, wide main beam and easy to be mounted, it still can not meet the needs of practice usages.
平面螺旋天线虽然具有频带宽、体积小、主瓣宽、易封装等特点，但是在具体应用中常常不能适应实际的需要。
In this paper, a simple and practical electrically small planar unipole antenna is presented, and the dependences of input impedance on dimension of the antenna and frequency are investigated.
本文提出一种简单而实用的平面结构的单极子电小天线，研究输入阻抗随天线外形尺寸和频率的变化规律。
The planar slot array antenna can satisfy a radar screen's request for antenna high gain, low side lobe, small volume, and light weight etc. So it gets extensively applied in the airborne radar.
平板裂缝天线可满足雷达系统对天线增益高、副瓣低、体积小、重量轻的要求，所以在机载雷达中得到广泛应用。
The planar slot array antenna can satisfy a radar screen's request for antenna high gain, low side lobe, small volume, and light weight etc. So it gets extensively applied in the airborne radar.
平板裂缝天线可满足雷达系统对天线增益高、副瓣低、体积小、重量轻的要求，所以在机载雷达中得到广泛应用。
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