Design and development of ultra-wideband 3 dB hybrid coupler for Ion cyclotron resonance frequency heating in tokamak

2014 ◽  
Vol 85 (4) ◽  
pp. 044706 ◽  
Author(s):  
Rana Pratap Yadav ◽  
Sunil Kumar ◽  
S. V. Kulkarni
Keyword(s):  
Resonance Frequency ◽  
Cyclotron Resonance ◽  
Ultra Wideband ◽  
Ion Cyclotron Resonance ◽  
Design And Development ◽  
Ion Cyclotron ◽  
Hybrid Coupler ◽  
Frequency Heating

Design and development of 2 kW, 3 dB hybrid coupler for the prototype Ion Cyclotron Resonance Frequency (ICRF) system

2018 ◽  
Vol 11 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Abhinav Jain ◽  
Rana Pratap Yadav ◽  
S. V. Kulkarni
Keyword(s):  
Resonance Frequency ◽  
High Frequency ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Design And Development ◽  
Very High Frequency ◽  
Ion Cyclotron ◽  
Hybrid Coupler ◽  
Reflected Power ◽  
Better Than

AbstractDesign and development of 2 kW, 3 dB tandem hybrid coupler for the frequency range of 155–225 MHz has been presented in this paper. The developed 3 dB coupler is to be used in a prototype of Ion Cyclotron Resonance Frequency (ICRF) system of Tokamak, which has been developed to test the resilience of ICRF network during continuously variable RF load excursions. The 3 dB coupler divides the RF power between two antennae of the prototype and protects the RF source by coupling of reflected power to the isolated port. The developed coupler shows excellent coupling flatness of −3 ± 0.3 dB over 38% of fractional bandwidth and also provides voltage standing wave ratio (VSWR) <1.3, isolation better than 32 dB and return loss better than 25 dB in full band. The presented work establishes a technique which can be useful for the development of high-power hybrid coupler in the range of high frequency (HF), very high frequency (VHF) and ultra high frequency (UHF).

scholarly journals Ion cyclotron resonance frequency heating in JET during initial operations with the ITER-like wall

2014 ◽  
Vol 21 (6) ◽  
pp. 061510 ◽  
Author(s):  
P. Jacquet ◽  
V. Bobkov ◽  
L. Colas ◽  
A. Czarnecka ◽  
E. Lerche ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Frequency Heating

Improved L-mode discharges using ion cyclotron resonance frequency heating on Tore Supra

1999 ◽  
Author(s):  
G. T. Hoang ◽  
P. Monier-Garbet ◽  
T. Aniel ◽  
C. Bourdelle ◽  
R. V. Budny ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Frequency Heating

scholarly journals Optimizing ion-cyclotron resonance frequency heating for ITER: dedicated JET experiments

2012 ◽  
Vol 54 (6) ◽  
pp. 069601
Author(s):  
E Lerche ◽  
D Van Eester ◽  
J Ongena ◽  
M-L Mayoral ◽  
M Laxaback ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Frequency Heating

scholarly journals Optimizing ion-cyclotron resonance frequency heating for ITER: dedicated JET experiments

2011 ◽  
Vol 53 (12) ◽  
pp. 124019 ◽  
Author(s):  
E Lerche ◽  
D Van Eester ◽  
J Ongena ◽  
M-L Mayoral ◽  
M Laxaback ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Frequency Heating
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