| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an antenna apparatus which can actualize two collinear antennas with the same length as in one antenna, while maintaining antenna performance. Ž<P>SOLUTION: The antenna apparatus is provided with a slender ground conductor 5, a slender first radiating element 1 arranged in parallel in an identical plane with the ground conductor 5 and short-circuited to the ground conductor 5 in the vicinity of the center in a longitudinal direction, a slender second radiating element 2 arranged in parallel in an identical plane with the ground conductor 5 at an axisymmetric position opposite to the first radiating element 1 in regard to the ground conductor 5 and short-circuited to the ground conductor 5 in the vicinity of the center in a longitudinal direction, a slender third radiating element 3 arranged in parallel in an identical plane with the first radiating element 1 in opposite side to the ground conductor 5 in regard to the first radiating element 1, a slender fourth radiating element 4 arranged in parallel in an identical plane with the ground conductor 5 at an axisymmetric position opposite to the third radiating element 3 in regard to the ground conductor 5, a first feeder 6 connected between the ground conductor 5 and the first radiating element 1, and a second feeder 7 connected between the first radiating element 1 and the third radiating element 3. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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