| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device easily adjusting an impedance and a resonance frequency. SOLUTION: In the antenna device 100, an antenna block 10 has a base body 11, a top-face conductor section 12 formed on the top face of the base body and first and second pad electrodes 13 and 14 formed at one end in the longitudinal direction of the base of the base body 11 and mutually divided by a slit 18a having a specified width. In the antenna device 100, the antenna block 10 further has a side-face conductor section 17 connecting one end in the longitudinal direction of the top-face conductor section 12 and the first and second pad electrodes. The side-face conductor section 17 has a notched section 18b continuously formed from the slit 18a. The first pad electrode 13 is connected to a feed line 16, and the second pad electrode 14 is connected to a ground pattern 22. The notched section 18b carries out an impedance matching and a trimming easily after an antenna mounting because an input impedance shifts in a higher direction when the notched section 18b is deepened upwards. COPYRIGHT: (C)2009,JPO&INPIT
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