| 摘要 |
PROBLEM TO BE SOLVED: To provide an integrated antenna capable of preventing radiation power from being reduced locally. SOLUTION: The present invention relates to an integrated antenna including: a ground plate; a first antenna which is disposed in a central portion on one side of the ground plate and has directivity in a direction vertical to the one side of the ground plate; and a second antenna and a third antenna which operate at frequencies, different from that of the first antenna, approximately equal to each other and are disposed in a portion around the central portion on the one side of the ground plate while holding the first antenna therebetween. The second antenna and the third antenna have a horizontal part including a component along with the one side of the ground plate, respectively, and in a portion of a shortest distance from an electrical center of the first antenna in the horizontal part, the phase of an induction current induced by a current flowing on the first antenna is made different between the second antenna and the third antenna. COPYRIGHT: (C)2009,JPO&INPIT
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