| 摘要 |
PROBLEM TO BE SOLVED: To provide a double frequency sharing dipole antenna device in which vertical directionality in an array antenna device can be enhanced and horizontal non-directionality can be obtained by sharing double frequency sharing vertically horizontally polarized waves that have been impossible configurationally. SOLUTION: The present invention relates to a double frequency sharing dipole antenna comprised of a first dipole resonating at a first frequency f<SB>1</SB>and two second dipoles resonating at a second frequency f<SB>2</SB>(f<SB>2</SB>>f<SB>1</SB>) and disposed in a linear direction as a unit antenna comprising an array antenna device 51. For vertical polarization (1), a first dipole 12 is powered at two points and two second dipoles 13, 14 are powered in the center. For horizontal polarization (2), first and second dipole elements 22, 23, 24 are powered at a central feed point via a feed circuit board 47 including a simplified demultiplexer 47a. The plurality of antenna devices for vertical and horizontal polarization are alternately vertically arranged. COPYRIGHT: (C)2007,JPO&INPIT
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