VEHICLE WIRELESS DEVICE
A vehicle wireless device is used in a state being attached to an attachment surface of a vehicle. A circuit board includes a circuit that transmits or receives a radio wave at a predetermined target frequency. An antenna includes a board parallel portion parallel to the circuit board to receive a h...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | A vehicle wireless device is used in a state being attached to an attachment surface of a vehicle. A circuit board includes a circuit that transmits or receives a radio wave at a predetermined target frequency. An antenna includes a board parallel portion parallel to the circuit board to receive a horizontally polarized wave having a vibration direction of an electric field parallel to the circuit board. A case accommodates the circuit board and the antenna. The circuit board faces the attachment surface when the vehicle wireless device is attached to the attachment surface. The circuit board may have a board region overlapping the board parallel portion without a conductor plate being provided in the board region. An inner space of the case may have a case region extending by λ/4 downward from the board parallel portion without a conductor plate being provided in the case region. |
|---|