| 摘要 |
PROBLEM TO BE SOLVED: To reduce a first side lobe level of an E surface in the radiation pattern of a tapered slot antenna. SOLUTION: The tapered slot antenna includes: a dielectric substrate 1; a metal thin film 2 formed on the dielectric substrate 1; a slot 3 formed on the metal thin film 2; and a tapered part 4a formed on the metal thin film 2, connected to one end of the slot 3 and formed by a notch whose slot width gradually expands along the extending direction of the slot 3. A boundary line between the tapered part 4a and the metal thin film 2 is defined by a hyperbolic tangent curve. COPYRIGHT: (C)2011,JPO&INPIT
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