skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Compact Probe for Power Detection from the Narrow Side of the Waveguide

Abstract

Phased array antennas with high directivity have a variety of applications. One of their applications is in RF heating for magnetically confined plasma fusion research. Among these RF heating schemes, waveguide arrays with careful phase control on each waveguide can act as a phased array antenna to deliver megawatts of power for heating fusion plasmas in the lower-hybrid range of frequencies (1 GHz-10 GHz). In order to achieve compactness, it is common to stack reduced height waveguide together to form the waveguide array. As long as the delivered power does not cause arcing in the waveguide, the waveguide height can be quite small. Due to this confined space in a stack of reduced height waveguides, power detection of the incident and reflected wave in the reduced height waveguide is extremely difficult. A new compact probe, which employs current loops, to monitor the incident and reflected wave from the narrow side of the reduced height waveguide has been developed. Its theory and performance will be reported in this paper.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
827934
Report Number(s):
PPPL-3950
TRN: US0403743
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 7 May 2004
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANTENNAS; DETECTION; HEATING; MONITORS; PERFORMANCE; PLASMA; PROBES; WAVEGUIDES; RF HEATING

Citation Formats

C.C. Kung, S. Bernabei, J. Gumbas, N. Greenough, E. Fredd, J.R. Wilson, and J. Hosea. Compact Probe for Power Detection from the Narrow Side of the Waveguide. United States: N. p., 2004. Web. doi:10.2172/827934.
C.C. Kung, S. Bernabei, J. Gumbas, N. Greenough, E. Fredd, J.R. Wilson, & J. Hosea. Compact Probe for Power Detection from the Narrow Side of the Waveguide. United States. doi:10.2172/827934.
C.C. Kung, S. Bernabei, J. Gumbas, N. Greenough, E. Fredd, J.R. Wilson, and J. Hosea. Fri . "Compact Probe for Power Detection from the Narrow Side of the Waveguide". United States. doi:10.2172/827934. https://www.osti.gov/servlets/purl/827934.
@article{osti_827934,
title = {Compact Probe for Power Detection from the Narrow Side of the Waveguide},
author = {C.C. Kung and S. Bernabei and J. Gumbas and N. Greenough and E. Fredd and J.R. Wilson and J. Hosea},
abstractNote = {Phased array antennas with high directivity have a variety of applications. One of their applications is in RF heating for magnetically confined plasma fusion research. Among these RF heating schemes, waveguide arrays with careful phase control on each waveguide can act as a phased array antenna to deliver megawatts of power for heating fusion plasmas in the lower-hybrid range of frequencies (1 GHz-10 GHz). In order to achieve compactness, it is common to stack reduced height waveguide together to form the waveguide array. As long as the delivered power does not cause arcing in the waveguide, the waveguide height can be quite small. Due to this confined space in a stack of reduced height waveguides, power detection of the incident and reflected wave in the reduced height waveguide is extremely difficult. A new compact probe, which employs current loops, to monitor the incident and reflected wave from the narrow side of the reduced height waveguide has been developed. Its theory and performance will be reported in this paper.},
doi = {10.2172/827934},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {5}
}