ANTENNA DEVICE, RADIO COMMUNICATION EQUIPMENT, SURFACE-MOUNTED ANTENNA, PRINTED CIRCUIT BOARD, AND MANUFACTURING METHOD OF THE SURFACE-MOUNTED ANTENNA AND THE PRINTED CIRCUIT BOARD

摘要

PROBLEM TO BE SOLVED: To achieve impedance matching between resonance antennas of a direct power feed type surface-mounted multiple-resonance antenna with a simple structure.

SOLUTION: This antenna device 1 includes a substrate 20 having a power supply line 27, and a surface-mounted multiple-resonance antenna 10 having a base 11 and a conductor pattern formed on the base 11 and installed on the substrate 20, wherein the conductor pattern includes antenna conductor patterns 13A, 13B, and a plane conductor pattern 16 which connects each of the antenna conductor patterns 13A, 13B to the power supply line 27; the plane conductor pattern 16 includes a slit 16a which controls the connection distance between at least a portion of each of the antenna conductor patterns 13A, 13B and the power supply line 27; and the substrate 20 does not include a conductor pattern in a region corresponding to the slit 16a.

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