Antennenanordnung und Funkgerät mit einer derartigen Antenne

摘要

The invention provides an antenna device (1), comprising: a substrate (2) made of an insulation material and including a first major surface and a second major surface face; a ground electrode (2a) provided substantially on the whole of the first major surface of said substrate (2); and an inverted F-shape antenna (3) and a microstrip antenna (4) respectively provided on the surface of the substrate (2). An open end of a radiation electrode (4a) of the microstrip antenna (4) and a feeding electrode (3c) of the inverted F-shape antenna (3) are capacitively coupled to each other. A first direction (3x) through the open end and ground end of the radiation electrode (3a) of the inverted F-shape antenna (3) is substantially perpendicular to a second direction (4x) through the open end and ground end of the radiation electrode (4a) of the microstrip antenna (4). By the above arrangement, a mutual interference hardly occurs between the two antennas (3, 4).