NON-DIRECTIONAL ANTENNA, AND NON-DIRECTIONAL ANTENNA ARRAY

摘要

PROBLEM TO BE SOLVED: To provide a non-directional antenna capable of implementing downsizing of the antenna and easily performing phase adjustment.

SOLUTION: A non-directional antenna 100 comprises: an oblong dielectric board 1; a conductive film 12 formed on one face of the dielectric board 1; U-shaped slots 2 and 3 formed on the conductive film; a metal tube 4 that is arranged so as to cover the U-shaped slots 2 and 3 and configures a passive element; and microstrip lines 5 and 6 that are formed on another face of the dielectric board 1 and supply the U-shaped slots 2 and 3 with power. The entire length of each of the U-shaped slots 2 and 3 is λ/4 to λ/2, and the length of the metal tube 4 is equal to or shorter than λ/2.

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