| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure isolation by coping with each of a plurality of high-frequency circuits for radio communication separately to prevent the mutual interference between antennas connected electrically. <P>SOLUTION: The radio communication device has a circuit board 2. On the circuit board 2, a plurality of high-frequency circuits for radio communication and a ground connected to the high-frequency circuits for radio communication electrically are formed. The radio communication device comprises first and second antennas. In the first antenna, one end side is a feeding end connected to one of the high-frequency circuits for radio communication, the other is an open end, and current distribution α between the feeding and open ends forms a standing wave of λ/2. In the second antenna, one end side is a feeding end connected to another high-frequency circuit for radio communication electrically, the other is an open end, current is induced in the ground on the circuit board 2 by an energizing current between the feeding end and the open end, and current distribution β by a dielectric current and the energizing current between the feeding and open ends forms a standing wave of approximately λ/2. The maximum current distribution regions of the first and second antennas are separated at an interval for crosstalk reduction. <P>COPYRIGHT: (C)2008,JPO&INPIT |
