| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device that suppresses interference with an undesirable radio wave from an antenna device which is closest during use.SOLUTION: A radiation element 2 comprises a signal source 3 and a plasma generation part 4. The radiation element 2 can transmit and receive a high-frequency signal extracted from a radio wave. The signal source 3 can supply the high-frequency signal to the radiation element 2. The plasma generation part 4 generates plasma at a periphery of the radiation element 2. The plasma generation part 4 can control a propagation direction of a radio wave in the plasma by controlling an electron density distribution of the plasma at the periphery of the radiation element 2.SELECTED DRAWING: Figure 1 |
