| 摘要 |
PROBLEM TO BE SOLVED: To provide an omnidirectional broadband antenna configured small in size and two-dimensional that can be built in desktop personal computers and AV equipment such as video players and television receivers. SOLUTION: The antenna is configured with: a first radiation element made of an elliptic or oval-shaped conductor plate; a second radiation element made of an annular conductor plate; a third radiation element made of an inverted U-shaped conductor; and a coaxial cable, a lower end of the first radiation element and a lower end of the second radiation element are connected by a conductor and connected to a center conductor of the coaxial cable, and a top part of the third radiation element is connected to an outer conductor of the coaxial cable. COPYRIGHT: (C)2005,JPO&NCIPI
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