OPTIMIZING UWB SATELLITE ANTENNA IN-VEHICLE POSITIONING
An electronic passive entry-passive start (ePEPS) system includes a first satellite ultra-wideband antenna, a second satellite ultra-wideband antenna, a third satellite ultra-wideband antenna, and a fourth satellite ultra-wideband antenna. A remote function actuator is in electronic communication with the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna. A body control module can be in electronic communication with remote function actuator. A key fob is in wireless communication with the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna such that predetermined functions in a vehicle are actuated depending on the position of a user.
1 . An electronic passive entry-passive start (peps) system comprising:
a first satellite ultra-wideband antenna positioned within or on a vehicle;
a second satellite ultra-wideband antenna positioned within or on a vehicle;
a third satellite ultra-wideband antenna positioned within or on a vehicle;
a fourth satellite ultra-wideband antenna positioned within or on a vehicle;
a remote function actuator in electronic communication with the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna; and
a key fob in wireless communication with the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna such that predetermined functions in a vehicle are actuated depending on the position of a user.
2 . The system of claim 1 wherein the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna are positioned within a vehicle with a maximum possible separation distance with respect to an axis system in a plane parallel to a vehicle floor.
3 . The system of claim 1 wherein at least one ultra-wideband antenna has a maximum separation from other anchors with respect to an axis perpendicular to a plane parallel a vehicle floor.
4 . The system of claim 1 operable to open at least one vehicle door when a user with the key fob is within a first predefined distance of a vehicle's B pillar.
5 . The system of claim 4 wherein the user with the key fob must be within the first predefined distance in order to remotely start the vehicle.
6 . The system of claim 4 operable to open a vehicle trunk when a user with the key fob is within a second predefined distance of a vehicle's trunk.
7 . The system of claim 6 wherein the second predefined distance is less than the first predefined distance.
8 . The system of claim 1 operable to lock the vehicle when a user with the key fob crosses from a distance less than a third predefined distance to a distance greater than the third predefined distance.
9 . The system of claim 8 wherein the third predefined distance is greater than the first predefined distance and the second predefined distance.
10 . The system of claim 7 wherein the first satellite ultra-wideband antenna, second satellite ultra-wideband antenna, third satellite ultra-wideband antenna, fourth satellite ultra-wideband antenna, and the key fob transmit and/or receive a signal in the range of 3 kHz to 300 GHz.
11 . The system of claim 7 wherein the first satellite ultra-wideband antenna, second satellite ultra-wideband antenna, third satellite ultra-wideband antenna, fourth satellite ultra-wideband antenna, and the key fob transmit and/or receive a signal with a bandwidth greater than or equal to 500 MHz or 20% of a center frequency.
12 . An electronic passive entry-passive start (peps) system comprising:
a first satellite ultra-wideband antenna positioned within or on a vehicle;
a second satellite ultra-wideband antenna positioned within or on a vehicle;
a third satellite ultra-wideband antenna positioned within or on a vehicle;
a fourth satellite ultra-wideband antenna positioned within or on a vehicle;
a remote function actuator in electronic communication with the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna;
a body control module in electronic communication with remote function actuator; and
a key fob in wireless communication with the first satellite ultra-wideband antenna, the second satellite ultra-wideband antenna, the third satellite ultra-wideband antenna, and the fourth satellite ultra-wideband antenna such that predetermined functions in a vehicle are actuated depending on the position of a user, wherein the first satellite ultra-wideband antenna, second satellite ultra-wideband antenna, third satellite ultra-wideband antenna, fourth satellite ultra-wideband antenna, and the key fob transmit and/or receive a signal in the range of 3 kHz to 300 GHz and wherein the first satellite ultra-wideband antenna, first satellite ultra-wideband antenna, first satellite ultra-wideband antenna, first satellite ultra-wideband antenna, and the key fob transmit and/or receive a signal with a bandwidth greater than or equal to 500 MHz or 20% of a center frequency.