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Telecommunications and Radio Engineering

Publicado 12 números por año

ISSN Imprimir: 0040-2508

ISSN En Línea: 1943-6009

SJR: 0.185 SNIP: 0.268 CiteScore™:: 1.5 H-Index: 22

Indexed in

THREE-CHANNEL PHASE METERS BASED ON THE AD8302 AND FIELD PROGRAMMABLE GATE ARRAYS FOR HETERODYNE MILLIMETER WAVE INTERFEROMETER

Volumen 75, Edición 11, 2016, pp. 1009-1025
DOI: 10.1615/TelecomRadEng.v75.i11.50
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SINOPSIS

The paper presents the results of research and development of two types of phase meters for heterodyne two-wave "unambiguous" interferometer designed to measure the plasma density in tokamak COMPASS. The aim of this work is the creation of a phase meter capable of measuring fast phase changes of each probing wave, and their phase difference. Plasma is probed by two microwave signals with different wavelengths propagating along identical paths to meet each other. Each analyzed signal acquires a certain phase shift φ1 and φ2, and the "unambiguous" interferometer determines the difference (φ1 − φ2). The phase measurement is carried out by using three-channel phase meters: a phase meter based on the pairs of the AD8302 and a phase meter based on field programmable gate arrays (FPGA). The proposed circuit decisions and algorithms of signal processing allow to measure phases in the range O...360°in real time.

CITADO POR
  1. Perez-Diaz Baltasar, Arana-Pulido Victor, Cabrera-Almeida Francisco, Dorta-Naranjo B. Pablo, Phase Shift and Amplitude Array Measurement System Based on 360° Switched Dual Multiplier Phase Detector, IEEE Transactions on Instrumentation and Measurement, 70, 2021. Crossref

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