Highly integrated multiband shark fin antenna for a vehicle
View Patent ↗A multiband shark fin antenna for a vehicle may include at least one transmitting and one receiving antenna element from the group consisting of AM/FM antennas, telephone and RKE antennas, GPS antenna, SDARS antenna, stacked patch antenna, DAP antenna, WLAN antenna, WIMAX antenna or DRM antenna. The antenna elements are disposed beneath a joint shark fin-shaped outer cover on the exterior of the vehicle. On the inside, the shark fin-shaped outer cover includes an antenna circuit board having the antenna elements disposed thereon. Electronic adjustment or amplifier circuits including a transceiver, tuner or receiver are disposed on both the upper and lower faces of the antenna circuit board. Shielding plates, which shield the adjustment or amplifier circuits with respect to the antenna elements, are disposed on the upper side of the antenna circuit board.
1. A multiband shark fin antenna comprising:
a common shark-fin-shaped outer cover defining an interior;
a system arranged in the interior of the shark-fin-shaped outer cover, comprising:
an antenna circuit board having a top side and an underside;
antenna elements including at least one transmitting antenna element and at least one receiving antenna element, the antenna elements being arranged on the top side of the antenna circuit board,
a plurality of electronic circuits comprising at least one of matching circuits or amplifier circuits that include at least one of transceivers, tuners, or receivers, wherein at least one of the electronic circuits is arranged on the top side of the antenna circuit board and at least one other of the electronic circuits is arranged on the underside of the antenna circuit board, and
at least one shielding plate arranged on the top side of the antenna circuit board and configured to shield the at least one electronic circuit arranged on the top side of the antenna circuit board from the antenna elements arranged on the top side of the circuit board,
wherein the antenna circuit board comprises a conductive track extending around one or more electronic devices of the at least one electronic circuit arranged on the top side of the antenna circuit board, the conductive track being connected to ground; and
wherein the at least one shielding plate includes a first shielding plate having a plate portion and a perimeter wall extending around a perimeter of the plate portion, wherein the first shielding plate is mounted to the antenna circuit board with the perimeter wall of the first shielding plate mounted to the conductive track, to thereby electrically ground the first shielding plate and to enclose the one or more electronic devices between the first shielding plate and antenna circuit board.
2. The shark fin antenna of claim 1 , wherein the transmitting and receiving antenna elements comprise at least one of the following antenna elements:
AM/FM antennas,
telephone and remote keyless entry (RKE) antenna,
GPS antenna,
SDARS antenna,
stacked patch antenna,
DAB antenna,
WLAN antenna,
WIMAX antenna, and
DRM antennas.
3. The shark fin antenna of claim 1 , wherein the antenna circuit board, the transmitting and receiving antenna elements, and the electronic circuits are arranged on a bottom part of an antenna housing.
4. The shark fin antenna of claim 2 , wherein a protective cover, of the antenna housing, which forms a sheath for the antenna elements, is arranged between the antenna elements and the shark-fin-shaped outer cover.
5. The shark fin antenna of claim 3 , wherein the bottom part engages with openings in the outer surface of the vehicle.
6. The shark fin antenna of claim 4 , wherein the protective cover engages with the bottom part via snap-action hooks and snap-action lugs.
7. The shark fin antenna of claim 4 , wherein the equipped antenna circuit board is supported by the bottom part and covered by the protective cover.
8. The shark fin antenna of claim 4 , wherein the protective cover has a pivoting axis to which the shark-fin-shaped outer cover is pivotably attached.
9. The shark fin antenna of claim 1 , wherein plug-in connectors protrude out of the bottom part and into the vehicle and are connected to communication devices of the vehicle via feed lines of a cable tree.
10. The shark fin antenna of claim 2 , wherein the antenna elements comprise a telephone and remote keyless entry (RKE) antenna, wherein the telephone and RKE antenna has a blade protruding into the shark-fin-shaped outer cover, wherein the blade stands vertically on the antenna circuit board and has a recess in a bottom portion of the blade in which a GPS antenna is arranged as a patch antenna.
11. The shark fin antenna of claim 2 , wherein a GPS patch antenna is arranged on a shielding plate which encloses at least one of an amplifier and an antenna matching circuit.
12. The shark fin antenna of claim 2 , wherein an SDARS antenna is arranged as a patch antenna spaced apart from the GPS patch antenna on a shielding plate on the antenna circuit board, the shielding plate enclosing at least one of an amplifier and an antenna matching circuit.