| 摘要 |
PROBLEM TO BE SOLVED: To reduce deterioration in antenna characteristics and communication quality by arranging a plurality of antennas at an interval as close as 0.5λeven when it is difficult to arrange a plurality of the antennas at an interval of 0.5λin a small apparatus such as a wireless communication terminal. SOLUTION: Built-in antennas 1, 2, 3, 4 configuring an array antenna are arranged inside the cases 11, 12 of a mobile phone. In this case, the built-in antennas 1, 2, 3, 4 are located on a diagonal line of a rectangular part of the rectangular cases at an equal interval d in linear arrangement as illustrated. Thus, a maximum antenna interval close to 0.5λcan be achieved in the case of configuring the array antenna by arranging the plurality of antenna elements inside the cases. COPYRIGHT: (C)2005,JPO&NCIPI
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