Power amplifier device for a magnetic resonance device and magnetic resonance device

Patent metadata

Field	Value
Publication number	US-10254359-B2
Application number	US-201414574275-A
Country	US
Kind code	B2
Filing date	Dec 17, 2014
Priority date	Dec 17, 2013
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

A power amplifier device for a magnetic resonance device includes a circuit board with at least one power amplifier module, and at least one electronics structure including coupled conductor paths arranged on opposing sides of the circuit board. The power amplifier device also includes a cooling plate operable for cooling components on the circuit board that heat up during operation and abutting the circuit board on one side. The cooling plate has a depression that follows the course of the conductor path and faces the conductor path in the region of the conductor path of the electronics structure that is arranged on the side of the circuit board facing the cooling plate.

First claim

The invention claimed is:

1. A power amplifier device for providing power to a magnetic resonance device, the power amplifier device comprising:
a circuit board;
at least one power amplifier module comprising at least one power electronics component implemented on the circuit board;
at least one electronics structure comprising coupled conductor paths arranged on opposing sides of the circuit board; and
a cooling plate operable for cooling components on the circuit board that heat up during operation, the cooling plate abutting the circuit board on one side,
wherein the cooling plate has a depression that follows a course of a conductor path of the coupled conductor paths and faces the conductor path in a region of the conductor path of the electronics structure that is arranged on a side of the circuit board facing the cooling plate.

2. The power amplifier device of claim 1 , wherein the cooling plate is connected at least partially along an edge of the depression in an electrically conductive manner to a grounded electrically conductive, flat rear-side coating of the circuit board using a connector.

3. The power amplifier device of claim 2 , wherein the connector is an elastic electrically conductive material that is press-mounted between the cooling plate and the circuit board.

4. The power amplifier device of claim 3 , wherein the elastic electrically conductive material is an electrically conductive elastomer.

5. The power amplifier device of claim 1 , wherein the cooling plate is attached to the circuit board by at least one attachment device.

6. The power amplifier device of claim 5 , wherein the at least one attachment device is attached to the circuit board by at least one attachment device by screwing.

7. The power amplifier device of claim 1 , wherein when the at least one electronics structure emits heat during operation, the depression is filled at least partially by a heat-conducting material.

8. The power amplifier device of claim 7 , wherein when the at least one electronics structure emits heat during operation, the depression is filled completely by the heat-conducting material.

9. The power amplifier device of claim 1 , wherein the electronics structure is a balun, a resonator, or the balun and the resonator coupled via a magnetic field.

10. The power amplifier device of claim 1 , wherein the cooling plate is made of aluminum, copper, or aluminum and copper.

11. A transmit unit of a magnetic resonance device, the transmit unit comprising:
a power amplifier device comprising:
a circuit board;
at least one power amplifier module comprising at least one power electronics component implemented on the circuit board;
at least one electronics structure comprising coupled conductor paths arranged on opposing sides of the circuit board; and
a cooling plate operable for cooling components on the circuit board that heat up during operation, the cooling plate abutting the circuit board on one side,

wherein the cooling plate has a depression that follows a course of a conductor path of the coupled conductor paths and faces the conductor path in a region of the conductor path of the electronics structure that is arranged on a side of the circuit board facing the cooling plate.

12. The transmit unit of claim 11 , wherein the cooling plate is connected at least partially along an edge of the depression in an electrically conductive manner to a grounded electrically conductive, flat rear-side coating of the circuit board using a connector.

13. The transmit unit of claim 12 , wherein the connector is an elastic electrically conductive material that is press-mounted between the cooling plate and the circuit board.

14. The transmit unit of claim 13 , wherein the elastic electrically conductive material is an electrically conductive elastomer.

15. The transmit unit of claim 11 , wherein the cooling plate is attached to the circuit board by at least one attachment device.

16. The transmit unit of claim 15 , wherein the at least one attachment device is attached to the circuit board by at least one attachment device by screwing.

17. The transmit unit of claim 1 , wherein when the at least one electronics structure emits heat during operation, the depression is filled at least partially by a heat-conducting material.

18. The transmit unit of claim 17 , wherein when the at least one electronics structure emits heat during operation, the depression is filled completely by the heat-conducting material.

19. The transmit unit of claim 11 , wherein the electronics structure is a balun, a resonator, or the balun and the resonator coupled via a magnetic field.

20. The transmit unit of claim 11 , wherein the cooling plate is made of aluminum, copper, or aluminum and copper.

Assignees

• Albrecht Adam
• Siemens Ag

Inventors

• Albrecht Adam

Classifications

• H10W90/00

  Package configurations · CPC title

• H10W40/611

  Bolts or screws · CPC title

• H10W40/47

  by flowing liquids, e.g. forced water cooling · CPC title

• H10W40/10

  Arrangements for heating · CPC title

• G01R33/3614 Primary

  RF power amplifiers · CPC title