UWB antenna integrated lamp assembly without EMI noise

Patent metadata

Field	Value
Publication number	US-12439501-B2
Application number	US-202318393120-A
Country	US
Kind code	B2
Filing date	Dec 21, 2023
Priority date	Dec 21, 2023
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A method includes energizing a light source of a vehicular lamp assembly according to a duty cycle. The light source emits light responsive to being energized. While energizing the light source, and during an off-cycle of the duty cycle, the method includes transmitting an outgoing short-range wireless communication to a user device. The outgoing short-range wireless communication is transmitted from an antenna at the vehicular lamp assembly. During the off-cycle of the duty cycle, the method includes receiving an incoming short-range wireless communication at the antenna at the vehicular lamp assembly. The incoming short-range wireless communication is transmitted from the user device responsive to the outgoing short-range wireless communication.

First claim

What is claimed is:

1. A computer implemented method executed by data processing hardware that causes the data processing hardware to perform operations comprising:
energizing a light source of a vehicular lamp assembly according to a duty cycle, the light source emitting light responsive to being energized;
while energizing the light source, and during an off-cycle of the duty cycle, transmitting an outgoing short-range wireless communication to a user device, the outgoing short-range wireless communication transmitted from an antenna at the vehicular lamp assembly; and
during the off-cycle of the duty cycle, receiving an incoming short-range wireless communication at the antenna at the vehicular lamp assembly, the incoming short-range wireless communication transmitted from the user device responsive to the outgoing short-range wireless communication.

2. The method of claim 1 , wherein:
the operations further comprise, while energizing the light source, adjusting the duty cycle from a first duty cycle to a zero (0) percent duty cycle; and
transmitting the first short-range wireless communication and receiving the second short-range wireless communication occurs during the zero (0) percent duty cycle of the duty cycle.

3. The method of claim 2 , wherein the operations further comprise, responsive to receiving the incoming short-range wireless communication, adjusting the duty cycle to the first duty cycle.

4. The method of claim 1 , wherein energizing the light source of the vehicular lamp assembly is responsive to determining presence of the user device at a distance from the vehicular lamp assembly that is less than a first threshold distance.

5. The method of claim 4 , wherein transmitting the outgoing short-range wireless communication to the user device is responsive to determining presence of the user device at a distance from the vehicular lamp assembly that is less than a second threshold distance, the second threshold distance less than the first threshold distance.

6. The method of claim 1 , wherein the light source comprises a light emitting diode (LED) disposed on a circuit element.

7. The method of claim 6 , wherein the antenna is disposed on the circuit element.

8. The method of claim 1 , wherein the antenna comprises a conductive trace disposed at one selected from the group consisting of:
a light guide of the vehicular lamp assembly;
a reflector of the vehicular lamp assembly;
a housing of the vehicular lamp assembly; and
a bezel of the vehicular lamp assembly.

9. The method of claim 8 , wherein at least a portion of the conductive trace forms a graphical design at the light guide or the reflector of the vehicular lamp assembly.

10. The method of claim 1 , wherein the outgoing short-range wireless communication and the incoming short-range wireless communication comprise ultra-wideband (UWB) communications.

11. A system, the system comprising:
data processing hardware; and
memory hardware in communication with the data processing hardware, the memory hardware storing instructions executed on the data processing hardware that cause the data processing hardware to perform operations comprising:
energizing a light source of a vehicular lamp assembly according to a duty cycle, the light source emitting light responsive to being energized;
while energizing the light source, and during an off-cycle of the duty cycle, transmitting an outgoing short-range wireless communication to a user device, the outgoing short-range wireless communication transmitted from an antenna at the vehicular lamp assembly; and
during the off-cycle of the duty cycle, receiving an incoming short-range wireless communication at the antenna at the vehicular lamp assembly, the incoming short-range wireless communication transmitted from the user device responsive to the outgoing short-range wireless communication.

12. The system of claim 11 , wherein:
the operations further comprise, while energizing the light source, adjusting the duty cycle from a first duty cycle to a zero (0) percent duty cycle; and
transmitting the first short-range wireless communication and receiving the second short-range wireless communication occurs during the zero (0) percent duty cycle of the duty cycle.

13. The system of claim 11 , wherein:
energizing the light source of the vehicular lamp assembly is responsive to determining presence of the user device at a distance from the vehicular lamp assembly that is less than a first threshold distance; and
transmitting the outgoing short-range wireless communication to the user device is responsive to determining presence of the user device at a distance from the vehicular lamp assembly that is less than a second threshold distance, the second threshold distance less than the first threshold distance.

14. The system of claim 11 , wherein the light source comprises a light emitting diode (LED) disposed on a circuit element, the antenna disposed on the circuit element.

15. The system of claim 11 , wherein the antenna comprises a conductive trace disposed at one selected from the group consisting of:
a light guide of the vehicular lamp assembly;
a reflector of the vehicular lamp assembly;
a housing of the vehicular lamp assembly; and
a bezel of the vehicular lamp assembly.

16. The system of claim 11 , wherein the outgoing short-range wireless communication and the incoming short-range wireless communication comprise ultra-wideband (UWB) communications.

17. A vehicle, the vehicle comprising:
a lamp assembly comprising:
a light source including a light emitting diode (LED) disposed on a circuit element;
a light guide; and
a reflector;

data processing hardware disposed at the lamp assembly; and
memory hardware in communication with the data processing hardware, the memory hardware storing instructions executed on the data processing hardware that cause the data processing hardware to perform operations comprising:
energizing the light source of the lamp assembly according to a duty cycle, the light source emitting light responsive to being energized;
while energizing the light source, and during an off-cycle of the duty cycle, transmitting an outgoing ultra-wideband (UWB) wireless communication to a user device, the outgoing UWB wireless communication transmitted from an antenna at the lamp assembly; and
during the off-cycle of the duty cycle, receiving an incoming UWB wireless communication at the antenna at the lamp assembly, the incoming UWB wireless communication transmitted from the user device responsive to the outgoing UWB wireless communication.

18. The vehicle of claim 17 , wherein:
the operations further comprise, while energizing the light source, adjusting the duty cycle from a first duty cycle to a zero (0) percent duty cycle; and
transmitting the first UWB wireless communication and receiving the second UWB wireless communication occurs during the zero (0) percent duty cycle of the duty cycle.

19. The vehicle of claim 17 , wherein:
energizing the light source of the lamp assembly is responsive to determining presence of the user device at a distance from the vehicle that is less than a first threshold distance; and
transmitting the outgoing UWB wireless communication to the user device is responsive to determining presence of the user device at a distance from the vehicle that is less than a second threshold distance, the second threshold distance less than the first threshold distance.

20. The vehicle of claim 17 , wherein the antenna comprises a con

Assignees

• Gm Global Tech Operations Llc

Inventors

• Park Jonglee
• Oh Jang Hwan
• Carlesimo Daniel Pinheiro

Classifications

• B60Q1/30

  for indicating rear of vehicle, e.g. by means of reflecting surfaces · CPC title

• B60Q1/04

  the devices being headlights · CPC title

• H01Q5/25

  Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems · CPC title

• H01Q1/3283

  side-mounted antennas, e.g. bumper-mounted, door-mounted (mounted on windscreens H01Q1/1271) · CPC title

• F21W2102/40

  the light being emitted to facilitate access to the vehicle · CPC title