| 摘要 |
PURPOSE:To receive also a TV broadcast by extracting directly an output from an antenna wire provided additionally to a window glass of an automobile and obtaining a reception output at a different band via a shortening capacitor so as to utilize a window antenna tuned for, e.g., an FM broadcast. CONSTITUTION:A received output of an antenna wire 5 provided additionally to the inside of a rear wind shield 1 is led to a feeding point 6 from a folded position of a main element 5a. The feeding point 6 has a wide face electrode 12. A reception output of a radio broadcast radio wave is led out of a terminal board 13 soldered to one end of the face electrode 12. Further, a capacitive coupler 11 is formed by opposing an opposed electrode 16 and the face electrode 12 via an insulation board 15 made of glass or the like in order to extract a reception output of another band, e.g., a TV broadcast from the feeding point 6. The capacitive coupler 11 plays a role of a shortening capacitor and the effective length of the antenna wire 5 viewed from the TV side is reduced remarkably than the effective length viewed from the radio set side. Thus, the TV reception with high sensitivity is attained without changing the antenna pattern turned for FM. |
