Planar Transformer and Electrical Component

• US 20150170825A1
• Filed: 12/15/2014
• Published: 06/18/2015
• Est. Priority Date: 12/16/2013
• Status: Active Application

• Current Assignee: Siemens AG
• Original Assignee: Horst Krockel
• Inventors: Krckel, Horst
• Application Number:
  US14/571,277
• Publication Number:
  US 20150170825A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/2885 with shields or electrodes shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/363 made of electrically conductive material

Abstract

A planar transformer includes a printed circuit board, at least two conductor tracks, a base plate, and a recess that is formed in the base plate. A shroud that is formed from an at least partially electrically conductive material is arranged in the recess. The shroud is electrically connected to the printed circuit board.

Claims

1. A planar transformer comprising:

a printed circuit board;

at least two conductor tracks;

a base plate;

a recess that is formed in the base plate; and

a shroud that is formed from an at least partially electrically conductive material,

wherein the shroud is arranged in the recess, and

wherein the shroud is electrically connected to the printed circuit board.

2. The planar transformer of claim 1, wherein a flux return space is formed in an interior of the shroud.

3. The planar transformer of claim 1, wherein the shroud is formed from an electrically conductive metal sheet.

4. The planar transformer of claim 1, wherein the shroud has smaller dimensions than the recess in the base plate, and the shroud is at a distance from the base plate in an assembled state.

5. The planar transformer of claim 1, wherein the shroud is fixed to the printed circuit board.

6. The planar transformer of claim 5, wherein the fixing is a circumferential soldering.

7. The planar transformer of claim 1, wherein the shroud comprises at least one fixing device for additional fixing to the printed circuit board.

8. The planar transformer of claim 7, wherein the printed circuit board has at least one hole.

9. The planar transformer of claim 1, wherein the shroud is integrated into the base plate.

10. The planar transformer of claim 9, wherein the base plate having the shroud has a circumferential, partial-area connection to the printed circuit board.

11. The planar transformer of claim 10, wherein the partial-area connection is in the form of a contact edge or contact spring on the base plate.

12. The planar transformer of claim 10, wherein the base plate has attenuation ribs.

13. An electrical component comprising:

at least one planar transformer comprising;

a printed circuit board;

at least two conductor tracks;

a base plate;

a recess that is formed in the base plate; and

a shroud that is formed from an at least partially electrically conductive material,

wherein the shroud is arranged in the recess, and

wherein the shroud is electrically connected to the printed circuit board.

14. The electrical component of claim 13, wherein the electrical component is in the form of a high-frequency amplifier for magnetic resonance devices.

15. The electrical component of claim 13, wherein a flux return space is formed in an interior of the shroud.

16. The electrical component of claim 13, wherein the shroud is formed from an electrically conductive metal sheet.

17. The electrical component of claim 13, wherein the shroud has smaller dimensions than the recess in the base plate, and the shroud is at a distance from the base plate in an assembled state.

18. The electrical component of claim 13, wherein the shroud is fixed to the printed circuit board.

19. The electrical component of claim 18, wherein the fixing is a circumferential soldering.

20. The electrical component of claim 13, wherein the shroud comprises at least one fixing device for additional fixing to the printed circuit board.