Electromagnetic Field Analysis for Microwave Discharge Ion Engine using Multi Mono-poles Antenna System
- Paper number
IAC-05-C4.P.03
- Author
Mr. Keisuke Izumi, Kyushu University, Japan
- Coauthor
Mr. Hirokazu Masui, Kyushu University, Japan
- Coauthor
Mr. Keisuke Shinyashiki, Kyushu University, Japan
- Coauthor
Dr. Naoji Ymamoto, Kyushu University, Japan
- Year
2005
- Abstract
Microwave discharge ion engines are adopted as a main engine for a planetary exploration satellite “HAYABUSA”, in a sample return mission of MUSES-C conducted by The Japan Aerospace Exploration Agency (JAXA). The engine has a high thrust efficiency exceeding 50However, there are still challenges to be overcome. One of them is a nonuniform ion production, which would cause the reduction of its lifetime. Thus, novel microwave transmission system, multi mono-pole antennas systems, was proposed. The multi mono-poles antenna system has a room, in which an emitting antenna and several receiver antennas are placed. This system would allow microwave to be provided in any desired place and have a role of DC block. We report here on optimal configuration of antennas using multi mono-pole systems. In order to optimize the position and length of antenna, the distribution of electromagnetic field and transmission efficiency are analyzed by finite difference time domain (FDTD) method, which is known for its usefulness and simplicity to calculate to electromagnetic field. The relation between the antenna length and transmission efficiency was investigated. The results showed that the length and the radial position of the antenna were critical to the transmission efficiency. Experimental results showed the same tendency as calculation results.
- Abstract document
- Manuscript document
IAC-05-C4.P.03.pdf (🔒 authorized access only).
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