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Technical Paper

IQ Detector Phase Measurement Algorithm Based on Center Aligned Fourier Transform

Pages 176-179 | Published online: 10 Aug 2017
 

Abstract

An FM reflectometer is developed to measure the density profile of the MP2 device. It operates in the frequency range of 7.78-12.38 GHz. Phase information is obtained by digitizing the IQ detector outputs. However, the measured signal is significantly contaminated by noise due to microwave reflection at various points because the emitting and receiving antennas are installed outside of the vacuum window. A center aligned Fourier transform is used to remove the noise and extract the correct phase information from the measurement. In this paper, data analysis techniques are introducedplasma density profile is shown.

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