A REVIEW ON LIQUID STUB TUNER FOR IMPEDANCE MATHING
- Mrs. Ila Rahul Vaghela
- Mr. Rahul A. Vaghela
- Mrs. Nirali Shah
- Ms. Nidhi Bhatt
Liquid stub tuner, ICRF heating, LHD
Plasma is a variable load. It is a fourth state of matter. The plasma impedance varies over a wide range. This requires impedance matching with RF generator that is normally of 50 Ohm. An ion cyclotron range of frequencies (ICRF) system is an important system to heat plasmas and to drive anon-inductive current infusion devices. ICRF system will deliver 6 MW of RF power to plasma with a long-pulse length operation up to 300s. Therefore, high-power RF transmission components are required to transmit a MW level of RF power continuously in the ICRF heating and current drive systems. For impedance matching network consists of stub tuner and phase shifter. A conventional stub tuner has moving arrangement. At high power moving arrangement is not suitable because of high current flowing through it. Finger contacts are used to make electrical contacts between different conductors Finger contact may burn due to high localized current. To avoid this problem, liquid stub tuner is the best option for the impedance matching. A liquid stub tuner makes use of the difference between the RF wave lengths in liquid and in gas due to the different relative dielectric constants. It is to be very reliable RF component for high power transmission systems. Changing the height of the liquid in the phase shifter varies the phase.
Mrs. Ila Rahul Vaghela, Mr. Rahul A. Vaghela, Mrs. Nirali Shah, Ms. Nidhi Bhatt. "A REVIEW ON LIQUID STUB TUNER FOR IMPEDANCE MATHING".INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH ISSN:2321-9939, Vol.2, Issue 1, pp.670-674, URL :https://rjwave.org/ijedr/papers/IJEDR1401121.pdf
Volume 2 Issue 1
Pages. 670-674
