TY - JOUR
T1 - Faraday Shield Effects on a Half-Turn Loop Antenna Used for ICRF Plasma Heating
AU - Sawaya, Kunio
AU - Adachi, Saburo
N1 - Funding Information:
Manuscript received October 26, 1987; revised May 18, 1988. This work was supported in part by a scientific grant-in-aid (Energy Special Research Project, “Antennas and related problems for wave heating of plasmas”) from the Ministry of Education, Science and Culture of Japan. K. Sawaya and S. Adachi are with the Department of Electrical Engineering, Tohoku University, Sendai, 980 Japan. Y. Sato is with the National Space Development Agency of Japan, Tsu-kuba, 305 Japan. IEEE Log Number 8822660.
PY - 1988/10
Y1 - 1988/10
N2 - Characteristics of a half-turn loop antenna having a Faraday shield have been systematically investigated. The main interest is to clarify the Faraday shield effects on the near-zone electric field distribution. For analytical simplicity, a loop antenna located on an infinite conducting plane and radiating into semi-infinite vacuum space has been analyzed by using the moment method. Some important results have been obtained: In the presence of the Faraday shield, undesirable field components have been confirmed to be sufficiently suppressed and the heating component Ey, which otherwise is strongly localized as an end effect, has been found to be distributed uniformly along the antenna in the case of a short electric length. It is found that the shielding strips should be uniformly distributed over the entire region around the half-turn loop antenna. An experimental investigation is also performed to confirm the validity of the analysis.
AB - Characteristics of a half-turn loop antenna having a Faraday shield have been systematically investigated. The main interest is to clarify the Faraday shield effects on the near-zone electric field distribution. For analytical simplicity, a loop antenna located on an infinite conducting plane and radiating into semi-infinite vacuum space has been analyzed by using the moment method. Some important results have been obtained: In the presence of the Faraday shield, undesirable field components have been confirmed to be sufficiently suppressed and the heating component Ey, which otherwise is strongly localized as an end effect, has been found to be distributed uniformly along the antenna in the case of a short electric length. It is found that the shielding strips should be uniformly distributed over the entire region around the half-turn loop antenna. An experimental investigation is also performed to confirm the validity of the analysis.
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U2 - 10.1109/27.8968
DO - 10.1109/27.8968
M3 - Article
AN - SCOPUS:0024090825
SN - 0093-3813
VL - 16
SP - 574
EP - 580
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 5
ER -