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The Fundamentals of a Wireless Spectrum Analyzer

A Wireless Spectrum Analyzer can be described as a frequency-selective, peak-responding voltmeter adjusted to display the rms value of a sine wave. It can be used to display power directly but cannot be used as a power meter. This can only be done as long as we know some value of the sine wave and the resistance across which we measure this value, only then one can calibrate the Wireless Spectrum Analyzer to indicate power. Here is a study of the fundamentals of Wireless Spectrum Analyzer:

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