| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multi-frequency shared antenna which is small, low attitude and can be shared in two or more adjacent frequency bands. <P>SOLUTION: The multi-frequency shared antenna has a reflecting plate; main loop elements to be arranged at predetermined intervals to the reflecting plate; and at least one sub-loop element, wherein at least one sub-loop element is arranged inside the main loop elements, when it is observed from the direction perpendicular to the reflecting surface of the reflecting plate, in the main loop element, a first point is connected to an electrical supply line, a second point different from the first point is connected to the reflecting plate via a short-circuiting conductor, and in at least one sub-loop element, one point is connected to the electrical supply line, and an electrode pattern to be an electrode of a capacitor is formed at a part. The main loop elements are connected to the reflecting plate via the short-circuiting conductor, at positions of two or more points at locations which differ from the first point, respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT |
