| 摘要 |
PROBLEM TO BE SOLVED: To provide a cabinet built-in antenna which can form radiation directivity and be used so that a direction of the user may be avoided when upper and lower cabinets of a folded type portable radio communication device with a receiving function of digital television broadcasting, are opened. SOLUTION: The antenna is provided with an upper side antenna element 2 which is built-in in the upper cabinet 1 of the portable radio communication device, a lower side antenna element 4 which is built in the lower cabinet 3, a connecting wire 5 which connects a terminal 2a of the upper side antenna element 2 and a terminal 4b of the lower side antenna element 4, and a connecting wire 6 which connects another terminal 2b of the upper side antenna elements 2 and another terminal 4a of the lower side antenna elements 4. The antenna is composed to make a twisted loop of a character "8" shape by nearly symmetrical of upper and lower parts as a total by crossing the connecting wire 5 and the connecting wire 6 in a hinge part 7. COPYRIGHT: (C)2005,JPO&NCIPI
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