| 摘要 |
PROBLEM TO BE SOLVED: To provide an array antenna device changing directivity characteristics without using a semiconductor element. SOLUTION: In the array antenna device 100, a parasitic element A1 and a parasitic element A2 each consisting of a coil body formed by spirally winding a conductor wire are disposed in parallel to a feeding element A0 with the element A0 sandwiched so that each coil body thereof can freely be expanded and shrunk in a longitudinal direction. With this configuration, a resonant frequency of each parasitic element is changed, and one of the parasitic elements is used as a waveguide, and the other as a reflector. COPYRIGHT: (C)2005,JPO&NCIPI
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