发明名称 |
ANTENNA FOR HIGH-FREQUENCY RADIO, HIGH-FREQUENCY RADIO DEVICE AND HIGH-FREQUENCY RADIO DEVICE OF WATCH TYPE |
摘要 |
An antenna device for a high frequency radio apparatus is equipped with an antenna element which is placed on a circuit board whose peripheral shape has a curve. The antenna element also follows the peripheral shape of the circuit board to have a curved part when viewed from above. The antenna device also has a ground pattern where the antenna element touches. The ground pattern can be placed at a constant distance from the antenna element toward the board. Furthermore, the ground pattern can be formed on almost the entire area of the circuit board other than where the antenna element is formed. Also, the circuit board may be a multilayer circuit board, and the ground pattern can be formed almost on the entire area of any one layer of the multilayer circuit board other than where the antenna element is formed. |
申请公布号 |
EP1291964(A4) |
申请公布日期 |
2003.03.12 |
申请号 |
EP20010917625 |
申请日期 |
2001.03.29 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
KOYAMA, SHUNSUKE;FUJISAWA, TERUHIKO |
分类号 |
G04G21/04;G04G99/00;H01Q1/27;H01Q1/38;H01Q9/04 |
主分类号 |
G04G21/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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