| 摘要 |
PROBLEM TO BE SOLVED: To provide a balloon type antenna. SOLUTION: Part of the inner surface or outer surface of a balloon 102 forms a paraboloid after expansion, and the paraboloid constitutes an electrical reflecting body 104. A replenishing part (pump) 103 replenishes the balloon 102 with a gas and, when the balloon 102 is expanded, a power feeding part 105 is arranged at the focal position of the paraboloid and the balloon 102 is hardened by the gas replenished by the part 103.
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