| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a memory card having a proximity wireless transfer function and used by being inserted into a digital camera etc. <P>SOLUTION: The longitudinal length of a pattern of a ground 14 is shortened in order to reduce the amount of electric current flowing in the longitudinal direction within a high-frequency coupling device, which contributes to the radiant gain for a far field. A coupling electrode 11 and the ground 14 do not integrally act as a half-wave dipole antenna. It is possible to suppress the strength of a radiation electromagnetic field for the far field radiated in the lateral direction down to the standard prescribed under the Radio Law or less. The transmitting power is efficiently allocated to the proximity wireless transfer using an induction field for a near field, and sufficient communication performance can be ensured. <P>COPYRIGHT: (C)2013,JPO&INPIT |
