Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment

Eiichirou Kawamori, Yu Hsiang Lin, Atsushi Mase, Yasushi Nishida, C. Z. Cheng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.

Original languageEnglish
Article number023507
JournalReview of Scientific Instruments
Volume85
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1

Fingerprint

Electron density measurement
microwave interferometers
Switching systems
Interferometers
antennas
Microwaves
Antennas
Plasmas
microwaves
electron density profiles
void ratio
Switches
quadratures
data acquisition
interferometry
switches
receivers
Experiments
Interferometry
Carrier concentration

All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

@article{5854474cb49a42168cd39488abe0af76,
title = "Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment",
abstract = "This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.",
author = "Eiichirou Kawamori and Lin, {Yu Hsiang} and Atsushi Mase and Yasushi Nishida and Cheng, {C. Z.}",
year = "2014",
month = "2",
day = "1",
doi = "10.1063/1.4865117",
language = "English",
volume = "85",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment. / Kawamori, Eiichirou; Lin, Yu Hsiang; Mase, Atsushi; Nishida, Yasushi; Cheng, C. Z.

In: Review of Scientific Instruments, Vol. 85, No. 2, 023507, 01.02.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment

AU - Kawamori, Eiichirou

AU - Lin, Yu Hsiang

AU - Mase, Atsushi

AU - Nishida, Yasushi

AU - Cheng, C. Z.

PY - 2014/2/1

Y1 - 2014/2/1

N2 - This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.

AB - This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.

UR - http://www.scopus.com/inward/record.url?scp=84894501080&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84894501080&partnerID=8YFLogxK

U2 - 10.1063/1.4865117

DO - 10.1063/1.4865117

M3 - Article

AN - SCOPUS:84894501080

VL - 85

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

SN - 0034-6748

IS - 2

M1 - 023507

ER -