Fully digital implementation of a high dynamic fast vector voltmeter

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Abstract

To overcome the analog technology limits a fully Digital Vector Voltmeter has been developed and characterized showing that the apparatus gives better performances than commercial equipment. In particular it can perform measures up to half GHz RF signals, obtaining a phase accuracy up to 0.03° including the linearity error, at output rate of 2 MHz. The apparatus covers a full dynamic range of 80 dB with the accuracy depending on the input level. The apparatus is based on a fixed FPGA Hardware architecture allowing to host different firmware to cope with various applications. In particular the apparatus has been adapted to two different plasma diagnostics of the FTU ENEA Frascati Tokamak: an RF reflectometer and a laser interferometer. Both diagnostics need a difference of phase measure between an IF signal and a reference, but in quite different conditions. The same hardware system has been used for both diagnostics just replacing its firmware to fulfill the requirement of the detection. ©2009 IEEE.
Original languageEnglish
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009 - , United States
Duration: 1 Jan 2009 → …

Conference

Conference2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009
CountryUnited States
Period1/1/09 → …

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Neri, C., Pollastrone, F., & Tudisco, O. (2009). Fully digital implementation of a high dynamic fast vector voltmeter. Paper presented at 2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009, United States. https://doi.org/10.1109/FUSION.2009.5226464