| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna system with excellent manufacturability by realizing a circularly polarized wave characteristics with a comparatively simple configuration. SOLUTION: A plurality of dipole elements 2, 3 are arranged along a transmission line 1 at an interval of a logarithmic value. The dipole elements 2, 3 have a structure of inverted feeding with each other. The transmission line 1 comprises parallel two-wires, and the dipole elements 2, 3 are disposed while being turned by 90-degrees difference each clockwise or counterclockwise when viewing from a feeder side or a termination side.
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