To provide an antenna system for vehicles which attains compatibility of reception sensitivity between a plurality of radio waves without calling for a complicated antenna structure and an increase in the manufacturing cost in particular in the case of receiving a plurality of the radio waves with different frequencies by an antenna whose installation space is limited.
The antenna system A1 for vehicles provided with a feeder Fd and antenna elements E1, E2, E3 connected to the feeder is characterized in that the antenna elements comprise: the first antenna element E1 extended in a parting direction from a vehicle body; and the second and third antenna elements E2, E3 branched from the first antenna element and substantially extended in directions opposite to each other in a direction in crossing with the first antenna element.
TANIGUCHI TATSUAKI
SHIGETA KAZUO
MAZDA MOTOR
Osamu Kawamiya