TY - JOUR
T1 - Conceptual Design of Dual Baseline-Frequency Fast Directional Switch using Square Corrugated Waveguide Splitter/Combiner
AU - Idei, H.
AU - Kobayashi, T.
AU - Moriyama, S.
AU - Isayama, A.
AU - Sakaguchi, M.
AU - Kasparek, W.
N1 - Funding Information:
This work was performed with the support and under the auspices of the JAEA Collaboration Research Program. This work was also supported in part by the International Collaborative Research Program of the Research Institute for Applied Mechanics, Kyushu University.
Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2015/7/5
Y1 - 2015/7/5
N2 - A FAst DIrectional Switch(FADIS) performance based on steep slope in a diplexer function was considered for dual-frequency (dual-f) applications to switch the transmission line with small frequency control. A diplexer of FADIS using a Square Corrugated Waveguide (SCW) splitter was designed as one of the most attractive candidates for the dual-f operation. The splitter performance was a key issue for the dual-f operation, and extended operation regions in splitter operations have been considered and surveyed using mode contents analysis based on matching coefficient evaluation. Some operational branches with high matching coefficients (>0.9) were found, and a new operating parameters were proposed for the dual-f operation in the JT-60SA Electron Cyclotron Hearing and Current Drive (ECHCD) system. Radiation pattern distributions from the SCW splitter were defined very well with no serious side lobes in the dual-f operation. In double loop ring resonator system, the diplexer frequency response was sufficiently steep to switch the outputs of the JT-60SA dual-f gyrotron.
AB - A FAst DIrectional Switch(FADIS) performance based on steep slope in a diplexer function was considered for dual-frequency (dual-f) applications to switch the transmission line with small frequency control. A diplexer of FADIS using a Square Corrugated Waveguide (SCW) splitter was designed as one of the most attractive candidates for the dual-f operation. The splitter performance was a key issue for the dual-f operation, and extended operation regions in splitter operations have been considered and surveyed using mode contents analysis based on matching coefficient evaluation. Some operational branches with high matching coefficients (>0.9) were found, and a new operating parameters were proposed for the dual-f operation in the JT-60SA Electron Cyclotron Hearing and Current Drive (ECHCD) system. Radiation pattern distributions from the SCW splitter were defined very well with no serious side lobes in the dual-f operation. In double loop ring resonator system, the diplexer frequency response was sufficiently steep to switch the outputs of the JT-60SA dual-f gyrotron.
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U2 - 10.1007/s10762-014-0138-0
DO - 10.1007/s10762-014-0138-0
M3 - Article
AN - SCOPUS:84930373478
VL - 36
SP - 662
EP - 674
JO - Journal of Infrared, Millimeter, and Terahertz Waves
JF - Journal of Infrared, Millimeter, and Terahertz Waves
SN - 1866-6892
IS - 7
ER -