| 摘要 |
PROBLEM TO BE SOLVED: To further improve the antenna characteristics of a slot type bow tie antenna provided with a parasitic antenna according to an publicly unknown prior application (Japanese patent application No.2000-266273), without impairing the advantages (thinness, high gain and wide band) of the antenna. SOLUTION: Four slot bow tie antenna elements 5A, 5B, 5C, 5D each having a parasitic element are disposed in symmetrical positions on a copper foil 10a of one side of a both-side printed circuit board 10, and power is fed to the four elements by a manifold strip line 11. A feeding coaxial cable (not shown) is connected to a feeding section h an array antenna. COPYRIGHT: (C)2004,JPO
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