通过实验比较，使用微波透镜后测试结果明显改善，天线增益明显提高，使近场测试的结果更接近于远场测试的结果。
The experimental results show that the measurement obtained is apparently improved, and the antenna gain greatly increased, therefore the efficiency is more close to that by the far-field measurement.
天线增益外场测试的关键是提高增益测试精度。
How to improve the test precision of antenna gain is the key point for antenna gain test in the outfield.
经过外场测试，天线在S/X双频段具有高增益、低噪声温度的优良性能，天馈系统在S波段能进行精密跟踪及S/X双频高效率接收。
Antenna have high gain, low noise temperature characteristic under test in experimentation, and it can precision tracking at S-band, high efficiency receive at S/X-band.
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