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vector signal analyzer : ウィキペディア英語版
vector signal analyzer

A vector signal analyzer is an instrument that measures the magnitude and phase of the input signal at a single frequency within the IF bandwidth of the instrument. The primary use is to make in-channel measurements, such as error vector magnitude, code domain power, and spectral flatness, on known signals.
Vector signal analyzers are useful in measuring and demodulating digitally modulated signals like W-CDMA, LTE, and WLAN.〔National Institute of Technology and Standards (), ''Measurement to Support Modulated-Signal Radio Transmissions for the Public-Safety Sector'', pg. 15, April, 2008, accessed July 19, 2011.〕 These measurements are used to determine the quality of modulation and can be used for design validation and compliance testing of electronic devices.
==Operation==

The vector signal analyzer spectrum analysis process typically has a down-convert & digitizing stage and a DSP & display stage.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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