| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna system the directivity characteristic of which can be optimized, even if a low profile and thinner making are realized by closely arranging antennas to each other. SOLUTION: First to fourth antennas 20a to 20d are formed on a printed circuit board 2a close to each other. Feeding lines 22a to 22d respectively led out of the first to fourth antennas 20a to 20d via baluns 21a to 21d are collected at a connection part 24. Selection of any of "feeding", "opening", "short-circuit", and "termination" at the connection part 24 as a connection mode of the feeding lines 22a to 22d can bring the directivity characteristics of the antenna system 2 to directivity characteristics, depending on the selection. COPYRIGHT: (C)2007,JPO&INPIT
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