Plasma and Fusion Research
Volume 14, 3402111 (2019)
Regular Articles
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
- 1)
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
Abstract
A two-dimensional (2D) phased-array-antenna (PAA) for electron cyclotron emission is one of the diagnostics for finding the window area of mode conversion from electron cyclotron waves to electron Bernstein wave. Spatial resolution of the reconstructed emission field pattern is improved with a lot of the antenna elements. The study proposes a phased-array patch loop antenna (PAPA) as a promising system to increase the elements of PAA. A 2D image reconstruction of a 6 GHz radio frequency source emission shows that the source position is detected within millimeter range by applying the prototype PAPA. This result indicates that the 2D image reconstruction with multi-element PAPA is feasible.
Keywords
electron cyclotron emission, phased array antenna, patch antenna, adaptive-array technique
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