OTA G/T Measurements of Active Phased Array Antenna Noise using a Vector Network Analyzer
OTA G/T Measurements of Active Phased Array Antenna Noise using a Vector Network Analyzer
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使用矢量网络分析仪对有源相控阵天线噪声进行 OTA G/T 测量
DOI：
10.1109/arftg47584.2020.9071660
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
J. Dunsmore
中科院分区：
文献类型：
--
作者：
J. Dunsmore
G/T是常用的品质因数，它取代了有源天线的噪声系数。有源天线具有来自元件的配置以及来自与天线集成的有源电子放大的天线增益。积分排除了直接测量有源元件的噪声系数。有源相控阵天线具有许多元件，每个元件贡献一些噪声（不相关）和一些信号（相关）。传统的Y因子（热/冷）方法不适用于有源天线;这里介绍了一种冷源和校准方法，可以利用集成噪声系数测量的矢量网络分析仪测量天线增益和G/T。
G/T is a common Figure of merit, which replaces noise Figure for active antennas. An active antenna has both antenna gain from the configuration of the elements as well as from active electronic amplification integrated with the antenna. The integration precludes measuring the noise Figure of the active element directly. Active phased-array antennas have many elements, each contributing some noise (uncorrelated)) and some signal (correlated). Traditional Y-factor (Hot/Cold) methods don’t work well for active antennas; here is introduced a cold-source and calibration method that can measure both the gain of the antenna and the G/T, utilizing a Vector Network Analyzer with integrated noise Figure measurement.