Experimental Measurement of Noise Figure and Radiation Efficiency With the Antenna Y-Factor Method at X-Band
Experimental Measurement of Noise Figure and Radiation Efficiency With the Antenna Y-Factor Method at X-Band
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DOI：
10.1109/tap.2023.3256482
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发表时间：
2023-05
影响因子：
5.7
通讯作者：
David Buck;M. Burnett;K. Warnick
中科院分区：
文献类型：
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作者：
David Buck;M. Burnett;K. Warnick
为了优化高灵敏度接收机的设计，能够将噪声预算贡献分配给系统的各个部分是有价值的。系统噪声和孔径效率可以使用天线Y因子方法来表征，该方法最近已添加到IEEE天线测量推荐实践标准149-2021中。我们扩展了天线Y因子法，表明它可以用来测量有源天线和接收机系统的噪声系数。通过对接收机噪声的附加测量，可以确定天线辐射效率。我们证明了扩展的天线Y因子方法实验在X波段的天线测试，包括喇叭与近100%的效率，微带贴片天线与效率接近80%，和贴片天线阵列与40%的标称效率。
To optimize the design of a high-sensitivity receiver, it is valuable to be able to assign noise budget contributions to various parts of the system. The system noise and aperture efficiency can be characterized using the antenna Y-factor method, which has been added recently to the IEEE Recommended Practice for Antenna Measurements, Std 149-2021. We extend the antenna Y-factor method by showing that it can be used to measure the noise figure of an active antenna and receiver system. With an additional measurement of the receiver noise, the antenna radiation efficiency can be determined. We demonstrate the extended antenna Y-factor method experimentally at X-band for antennas under test, including a horn with near 100% efficiency, microstrip patch antenna with efficiency near 80%, and a patch antenna array with 40% nominal efficiency.