| 摘要 |
PROBLEM TO BE SOLVED: To improve frequency selectivity for the different frequency band of an antenna. SOLUTION: An earth conductor 4 is arranged near a radiation conductor 2 which composes an antenna 1 in a radio communication device. Frequency characteristic of the antenna can be freely adjusted by a distance between the radiation conductor and the earth electrode by this composition, then, frequency selectivity of the antenna can be improved. COPYRIGHT: (C)2006,JPO&NCIPI
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