| 摘要 |
PROBLEM TO BE SOLVED: To improve antenna performance by reducing the number of lines disposed between the antenna and a main board, and to achieve a simplified structure as well as cost reduction by reducing the number of terminals. SOLUTION: In a dipole antenna device, an antenna end portion of a high-frequency signal feed line (La) is connected to an antenna end portion of the other high-frequency signal feed line (Lb) through a resistor (15). A tuning voltage (Vt) is applied to the antenna from the main board through one high-frequency signal feed line (La). Further, the tuning voltage (Vt) is applied to a cathode side of each of varactor diodes (3, 4) (12, 13), and each of anode connection points of the varactor diodes (3, 4) (12, 13) is connected to a ground pattern of the main board side through the other high-frequency signal feed line (Lb). COPYRIGHT: (C)2009,JPO&INPIT
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