| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antenna device that emits orthogonal polarization by simple power supply structure.SOLUTION: The antenna device includes: cavities 1-3; a conductor line layer 6; and feeder circuit layers 4, 5. The cavity 1 has a square top opening 1a. The cavities 2, 3 have through holes 2a, 3a. A ground part of the feeder circuit layer 4 is electrically connected to the cavity 2. The feeder circuit layer 4 has a feeder line 7 and a feeder probe 9. A ground part of the feeder circuit layer 5 is electrically connected to the cavity 3. The feeder circuit layer 5 has a feeder line 8 and a feeder probe 10. The feeder probes 9, 10 are formed so as to orthogonally cross each other, and constituted of a pair of elements facing each other at each tip part of feeder lines extended from branching parts 7a, 8a and fed in the opposite phases. The conductor line layer 6 is constituted of a metal conductor line 6a arranged in parallel in the same direction as the direction of polarization to be emitted by the feeder probe 10. Height from the bottom surface to the conductor line layer 6 is set to a value equal to an interval between the feeder probes 9, 10. |
