| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact and efficient antenna device capable of reducing an influence of a surrounding ground pattern. SOLUTION: A first pad electrode 121 of an antenna block 100 is connected to a first land pattern 212, and a second pad electrode 122 is connected to a second land pattern 213. A first radiation conductor 123 formed on the first side of a substrate 110 is formed vertically to a ground surface at the farthest position from a third edge line 220c of the ground pattern in an antenna mount region 211, thus minimizing an influence to the first radiation conductor from the ground pattern 220. A recess 117 is formed on a bottom surface 112 at the side of a second side 114 in the substrate 110, and air having low permittivity is interposed between the first radiation conductor 123 and the third edge line 220c of the ground pattern, thus further suppressing deterioration in antenna characteristics caused by the influence of the grand pattern. COPYRIGHT: (C)2009,JPO&INPIT
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