Vehicle antenna device

A vehicle antenna device that forms two communication areas for a portable device at two opposite sides of a vehicle, wherein the two communication areas are symmetric with respect to a straight line extending along a longitudinal direction of the vehicle, the vehicle antenna device comprising:

• a first antenna unit arranged at a first lateral side of the vehicle;
• a second antenna unit arranged at a second lateral side of the vehicle, which differs from the first lateral side, wherein
• each of the first and second antenna units includes
• an antenna body including an antenna portion and a first terminal portion, wherein the antenna portion includes at least two antenna coils each having an axis, and the two axes of the at least two antenna coils intersect each other, and wherein the first terminal portion includes first terminals each arranged on two ends of the at least two antenna coils;
• and
• a second terminal portion arranged on the vehicle and including second terminals respectively connected to the first terminals, wherein
• the second terminal portion of the first antenna unit includes a first wire-connecting structure that series-connects the at least two antenna coils of the first antenna unit,
• the second terminal portion of the second antenna unit includes a second wire-connecting structure that series-connects the at least two antenna coils of the second antenna unit and differs from the first wire-connecting structure,
• the two axes of the at least two antenna coils of the first antenna unit and the two axes of the at least two antenna coils of the second antenna unit are symmetric with respect to the straight line extending along the longitudinal direction of the vehicle,
• the at least two antenna coils of the first antenna unit and the at least two antenna coils of the second antenna unit are wound in the same direction, and
• a signal is applied in opposite directions to the antenna coils of one of the two symmetric sets of the antenna coils and applied in the same direction to the antenna coils of the other one of the two symmetric sets of the antenna coils.