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手机接收通道噪声系数测试
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2009-10-31
靓仔峰
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手机接收通道噪声系数测试:针对手机等接收机整机噪声系数测试问题，该文章提出两种简单实用的方法，并分别讨论其优缺点，一种方法是用单独频谱仪进行测试，精度较低；另一种方法是借助噪声测试仪的噪声源来测试，利用冷热负载测试噪声系数的原理，能够得到比较精确的测量结果。
Abstract：Often we face to test noise figure of a receiver with RF input and I/Q analogue output, normal
noise figure instrument is not adequate for the limited frequency range, here we introduce two
methods, one is to use spectrum analyzer, another method is to use standard noise source, and use Y-coefficient method to calculate the noise figure.
Abstract：Often we face to test noise figure of a receiver with RF input and I/Q analogue output, normal
noise figure instrument is not adequate for the limited frequency range, here we introduce two
methods, one is to use spectrum analyzer, another method is to use standard noise source, and use Y-coefficient method to calculate the noise figure.
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