Investigation of OversizEd Wave Transport System for Microwave Reflectometry for SST-1 tokamak |
Author(s): |
| Patel Jaykumar Girishkumar , Sankalchand Patel College of Engineering, Visnagar; Janmejay U. Buch, Institute for Plasma Research, Gandhinagar; Gautam D. Makwana, Sankalchand Patel College of Engineering, Visnagar; Surya Kumar Pathak, Institute for Plasma Research, Gandhinagar |
Keywords: |
| Ka-Band FMCW Reflecometer, SST-1 Tokamak, Mitre Bend, Pyramidal Horn Antenna, Oversized Rectangular Waveguides |
Abstract |
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A Wave Transport System (WTS) to transport the electromagnetic waves from the microwave Reflectometer transmitter to the tokamak and back has been designed and simulated using the CST Microwave Studio. Operating frequency range of the reflectometer is the Ka-band (26.5-40 GHz) which is decided based on the plasma parameters of the SST-1. To reduce propagation losses oversized waveguides (WR-90) were selected over the fundamental waveguides (WR-28). Oversized waveguides also reduce group delay of propagation in waveguides. To avoid generation of higher order modes linear transitions from WR-28 to WR-90 were utilized. The overall losses of the system reduce significantly on using oversized waveguides while avoiding mode conversion is a major drawback of using oversized waveguides. |
Other Details |
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Paper ID: IJSRDV4I31566 Published in: Volume : 4, Issue : 3 Publication Date: 01/06/2016 Page(s): 1702-1706 |
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