| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wide-band built-in antenna configured in inner portion of a mobile communication terminal and capable of processing a wide-band signal. <P>SOLUTION: The wide-band built-in antenna (40) includes first and second radiators (41, 42). The first radiator (41) has a configuration in which one or more coils each having different pitch distance are connected in series. The second radiator (42) has one or more conductive strip lines, and is disposed in parallel with a longitudinal direction of the first radiator (41). Since the second radiator (42) is winded in spiral shape, a path of a current flowed in the second radiator (42) has a current path having different direction from current flowed in the strip line of the first radiator (41) formed in linear shape. The antenna (40) can set a desirable wide-band by mutual electromagnetic coupling between the first and second radiators (41, 42) each having a different current path in direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
