Oberflächenmontierte Antenne und Kommunikationsgerät mit einer derartigen Antenne

摘要

The invention discloses a compact surface-mounted antenna having a wide frequency band. In the surface-mounted antenna, a first radiation electrode (6) is formed on the left-half region of the upper surface (5) of a base dielectric substrate (1). A multi-layer dielectric substrate (10) is laminated on the upper surface (5) of the base dielectric substrate (1) to be bonded and fixed thereto. A second radiation electrode (12) is formed on the right-half region of the upper surface (11) of the multi-layer dielectric substrate (10). The first and second radiation electrodes (6, 12) are not vertically opposed to each other. Opposing edges (7, 13) of the first and second radiation electrodes (6, 12) are oblique lines. A feeding signal of a signal source (4) is supplied to the first radiation electrode (6) by a capacitive coupling (C1) from a feeding connection electrode (2), and then, is supplied to the second radiation electrode (12) from the first radiation electrode (6) by a capacitive coupling between the first and second radiation (6, 12) electrodes. A direction (A1) in which the first radiation electrode (6) excites is set to be substantially perpendicular to a direction (B) in which the second radiation electrode (12) excites.