Antenna device, radar sensor device and method for producing an antenna device

Patent metadata

Field	Value
Publication number	US-12438282-B2
Application number	US-202218064539-A
Country	US
Kind code	B2
Filing date	Dec 12, 2022
Priority date	Feb 10, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

An antenna device. The antenna device includes a carrier element having at least one first strip conductor and having a second strip conductor; at least one fastening structure, which is formed in or on the carrier element; at least one antenna element, which is arranged or fastened on or in the fastening structure and is connected to the strip conductor; a transmitter device, which is arranged on the carrier element and is connected to the second strip conductor, and is designed to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element.

First claim

What is claimed is:

1. An antenna device, comprising:
a carrier element having a strip conductor;
at least one fastening structure, which is formed in or on the carrier element, wherein the fastening structure includes a slot or a microstrip line or a patch coupling;
at least one antenna element, which is arranged or fastened on or in the fastening structure and is connected to the strip conductor; and
a transmitter device, which is arranged on the carrier element and is connected to the strip conductor, and is configured to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element.

2. The antenna device as recited in claim 1 , which is formed as a chip and wherein the at least one antenna element is configured to emit and receive radar radiation.

3. The antenna device as recited in claim 1 , wherein the at least one antenna element includes a dielectric resonator antenna.

4. The antenna device as recited in claim 3 , wherein the dielectric resonator antenna has a cylindrical form or cuboidal form.

5. The antenna device as recited in claim 1 , wherein the transmitter device includes an IC chip and is arranged on an underside or upper side of the carrier element, and the at least one antenna element is arranged on an upper side or on the underside of the carrier element, the strip conductor including a first strip conductor and a second strip conductor, the antenna element being connected to the first strip conductor and the transmitter device being connected to the second strip conductor.

6. A radar sensor device comprising:
an antenna device, wherein the antenna device includes:
a carrier element having a strip conductor;
at least one fastening structure, which is formed in or on the carrier element;
at least one antenna element, which is arranged or fastened on or in the fastening structure and is connected to the strip conductor; and
a transmitter device, which is arranged on the carrier element and is connected to the strip conductor, and is configured to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element;

a printed circuit board on which the antenna device is arranged;
a radome, which covers the printed circuit board and allows radar radiation to pass through; and
a heat conductor, which is thermally connected to the printed circuit board and/or to the antenna device,
wherein the antenna device is arranged on an underside of the printed circuit board and the at least one antenna element extends through an opening in the printed circuit board in a direction of the radome.

7. A method for producing a radar sensor device, the method comprising the following steps:
forming an antenna device, the forming of the antenna device comprising:
providing a carrier element having a strip conductor;
forming at least one fastening structure, which is formed in or on the carrier element, wherein the fastening structure includes a slot or a microstrip line or a patch coupling;
arranging at least one antenna element, which is arranged or fastened on or in the fastening structure and is connected to the strip conductor; and
arranging a transmitter device, which is arranged on the carrier element, is connected to the strip conductor, and is configured to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element; and
integrating the antenna device into an arrangement by which radar radiation can reach the antenna device from an environment surrounding the radar sensor device and/or be emitted by the antenna device into the environment.

8. The method as recited in claim 7 , wherein the integrating includes:
arranging the antenna device on a circuit board; and
covering the antenna device that is on the circuit board with a radome that allows radar radiation to pass through.

9. The method as recited in claim 8 , further comprising thermally connecting a heat conductor to the printed circuit board and/or to the antenna device.

10. A radar sensor device comprising:
an antenna device, wherein the antenna device includes:
a carrier element having a strip conductor;
at least one fastening structure, which is formed in or on the carrier element;
at least one antenna element, which is arranged or fastened on or in the fastening structure and is connected to the strip conductor; and
a transmitter device, which is arranged on the carrier element and is connected to the strip conductor, and is configured to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element;

a printed circuit board on which the antenna device is arranged;
a radome, which covers the printed circuit board and allows radar radiation to pass through; and
a heat conductor, which is thermally connected to the printed circuit board and/or to the antenna device,
wherein the fastening structure includes a slot or a microstrip line or a patch coupling.

11. The radar sensor device as recited in claim 10 , wherein the antenna device is arranged on an upper side of the printed circuit board and the at least one antenna element extends away from the printed circuit board in a direction of the radome.

12. The radar sensor device as recited in claim 10 , wherein the antenna device is formed as a chip.

13. The radar sensor device as recited in claim 10 , wherein the antenna device is configured to emit and receive the radar radiation.

14. The radar sensor device as recited in claim 10 , wherein the at least one antenna element includes a dielectric resonator antenna.

15. The radar sensor device as recited in claim 14 , wherein the dielectric resonator antenna has a cylindrical form.

16. The radar sensor device as recited in claim 14 , wherein the dielectric resonator antenna has a cuboidal form.

17. The radar sensor device as recited in claim 10 , wherein:
the transmitter device includes an IC chip and is arranged on an underside or upper side of the carrier element;
the at least one antenna element is arranged on the upper side or on the underside of the carrier element;
the strip conductor includes a first strip conductor and a second strip conductor;
the at least one antenna element is connected to the first strip conductor; and
the transmitter device is connected to the second strip conductor.

18. The radar sensor device as recited in claim 10 , wherein the antenna element include a pair of individual antennas.

Assignees

• Bosch Gmbh Robert

Inventors

• Hollaender Christian
• Hildebrandt Juergen
• Baur Klaus
• Schoor Michael
• Pham Minh Nhat

Classifications

• H01Q21/28

  Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} · CPC title

• H01Q9/0407

  Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40) · CPC title

• G01S7/032

  Constructional details for solid-state radar subsystems · CPC title

• H01Q9/0485

  Dielectric resonator antennas · CPC title

• H01Q1/42

  Housings not intimately mechanically associated with radiating elements, e.g. radome · CPC title