Phase detection using AD8302 evaluation board in the superheterodyne microwave interferometer for line average plasma electron density measurements

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this paper the use of AD8302 evaluation board from analog devices for phase detection and consequently line average electron density measurement in the superheterodyne microwave interferometer is described. The phase is directly measured from this board. This method is very cheap and easy to integrate. For the measurement, signals that were obtained from the IF of both the mixers in the interferometer were fed as inputs to the evaluation board. The output was connected to an oscilloscope to capture the voltage trace. The voltage reading was then converted to phase angle by using the calibration data provided with the evaluation board. The plasma used to test the phase detection system was a microwave plasma discharge. The phase measurements were obtained very quickly without the use of a computer. These were then translated to line average electron density. The values were agreeable to published results.

Original languageEnglish
Pages (from-to)849-853
Number of pages5
JournalMeasurement: Journal of the International Measurement Confederation
Volume40
Issue number9-10
DOIs
Publication statusPublished - 01 Nov 2007

Fingerprint

Electron density measurement
microwave interferometers
Interferometer
Interferometers
Microwave
Plasma
Microwaves
Electron
Plasmas
Phase measurement
evaluation
Line
Evaluation
Electric potential
Carrier concentration
signal measurement
oscilloscopes
Voltage
electric potential
Calibration

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

@article{8c21b52abc4341d6b486cf7478b92e50,
title = "Phase detection using AD8302 evaluation board in the superheterodyne microwave interferometer for line average plasma electron density measurements",
abstract = "In this paper the use of AD8302 evaluation board from analog devices for phase detection and consequently line average electron density measurement in the superheterodyne microwave interferometer is described. The phase is directly measured from this board. This method is very cheap and easy to integrate. For the measurement, signals that were obtained from the IF of both the mixers in the interferometer were fed as inputs to the evaluation board. The output was connected to an oscilloscope to capture the voltage trace. The voltage reading was then converted to phase angle by using the calibration data provided with the evaluation board. The plasma used to test the phase detection system was a microwave plasma discharge. The phase measurements were obtained very quickly without the use of a computer. These were then translated to line average electron density. The values were agreeable to published results.",
author = "Yee, {Y. F.} and {Kumar Chakrabarty}, Chandan",
year = "2007",
month = "11",
day = "1",
doi = "10.1016/j.measurement.2007.02.005",
language = "English",
volume = "40",
pages = "849--853",
journal = "Measurement: Journal of the International Measurement Confederation",
issn = "0263-2241",
publisher = "Elsevier",
number = "9-10",

}

TY - JOUR

T1 - Phase detection using AD8302 evaluation board in the superheterodyne microwave interferometer for line average plasma electron density measurements

AU - Yee, Y. F.

AU - Kumar Chakrabarty, Chandan

PY - 2007/11/1

Y1 - 2007/11/1

N2 - In this paper the use of AD8302 evaluation board from analog devices for phase detection and consequently line average electron density measurement in the superheterodyne microwave interferometer is described. The phase is directly measured from this board. This method is very cheap and easy to integrate. For the measurement, signals that were obtained from the IF of both the mixers in the interferometer were fed as inputs to the evaluation board. The output was connected to an oscilloscope to capture the voltage trace. The voltage reading was then converted to phase angle by using the calibration data provided with the evaluation board. The plasma used to test the phase detection system was a microwave plasma discharge. The phase measurements were obtained very quickly without the use of a computer. These were then translated to line average electron density. The values were agreeable to published results.

AB - In this paper the use of AD8302 evaluation board from analog devices for phase detection and consequently line average electron density measurement in the superheterodyne microwave interferometer is described. The phase is directly measured from this board. This method is very cheap and easy to integrate. For the measurement, signals that were obtained from the IF of both the mixers in the interferometer were fed as inputs to the evaluation board. The output was connected to an oscilloscope to capture the voltage trace. The voltage reading was then converted to phase angle by using the calibration data provided with the evaluation board. The plasma used to test the phase detection system was a microwave plasma discharge. The phase measurements were obtained very quickly without the use of a computer. These were then translated to line average electron density. The values were agreeable to published results.

UR - http://www.scopus.com/inward/record.url?scp=34848910136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34848910136&partnerID=8YFLogxK

U2 - 10.1016/j.measurement.2007.02.005

DO - 10.1016/j.measurement.2007.02.005

M3 - Article

VL - 40

SP - 849

EP - 853

JO - Measurement: Journal of the International Measurement Confederation

JF - Measurement: Journal of the International Measurement Confederation

SN - 0263-2241

IS - 9-10

ER -