Transition between a waveguide and a substrate integrated waveguide, where the transition includes a main body formed by symmetrical halves

Patent metadata

Field	Value
Publication number	US-11264689-B2
Application number	US-202016797930-A
Country	US
Kind code	B2
Filing date	Feb 21, 2020
Priority date	Feb 21, 2020
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A broadband transition coupling for transition between a waveguide and a printed circuit board with a substrate integrated waveguide is disclosed. The broadband transition coupling comprises a main body that encompasses an air-filled waveguide section and a transition section. The air-filled waveguide section comprises a first interface for the waveguide. The transition section provides a second interface for the printed circuit board. The transition section continuously tapers along the second interface in order to reduce a height of the transition section for transition coupling with the printed circuit board. Further, the present disclosure relates to a broadband system for processing electromagnetic signals.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A broadband transition coupling for transition between a waveguide and a printed circuit board with a substrate integrated waveguide, said broadband transition coupling comprising:
a main body that encompasses an air-filled waveguide section and a transition section, said air-filled waveguide section comprising a first interface for said waveguide, said transition section providing a second interface for said printed circuit board, said transition section continuously tapering along said second interface in order to reduce a height of said transition section for transition coupling with said printed circuit board, wherein said main body is established by two halves, wherein each half of the main body comprises a respective half of the air-filled waveguide section and a respective half of the transition section, and wherein both halves are symmetrically identical with respect to a center plane of said air-filled waveguide section and said transition section.

2. The broadband transition coupling according to claim 1 , wherein said air-filled waveguide section and said transition section merge into each other via a bent section having a defined curvature.

3. The broadband transition coupling according to claim 2 , wherein said bent section has a base, said base providing a supporting area for said broadband transition coupling, wherein said supporting area is located on a surface of said base, and wherein said surface faces away from said waveguide section towards said printed circuit board.

4. The broadband transition coupling according to claim 1 , wherein said air-filled waveguide section and said transition section extend in substantially perpendicular directions.

5. The broadband transition coupling according to claim 1 , wherein said waveguide section has a rectangular cross section.

6. The broadband transition coupling according to claim 1 , wherein said transition section continuously tapers along said second interface in a step-less manner.

7. The broadband transition coupling according to claim 1 , wherein each half is established by a monolithic part.

8. The broadband transition coupling according to claim 1 , wherein each half provides a channel-like portion of said air-filled waveguide section and a channel-like portion of said transition section.

9. A broadband system for processing electromagnetic signals, said broadband system comprising:
a printed circuit board with a substrate integrated waveguide, and a broadband transition coupling for transition between a waveguide and said printed circuit board,
wherein said printed circuit board has a top layer on which said broadband transition coupling is placed, said printed circuit board comprising a recessed coupling region in said top layer, said recessed coupling region having an air-filled portion;
wherein said broadband transition coupling comprises a main body that encompasses an air-filled waveguide section and a transition section, said air-filled waveguide section comprising a first interface for said waveguide, said transition section providing a second interface for said printed circuit board, said transition section tapering along said second interface in order to reduce a height of said transition section for transition coupling with said printed circuit board; and
wherein said air-filled portion of said recessed coupling region interacts with said transition section of said broadband transition coupling.

10. The broadband system according to claim 9 , wherein said air-filled waveguide section and said transition section merge into each other via a bent section having a defined curvature, said bent section having a base, said base providing a supporting area, said broadband transition coupling contacting a surface within said recessed coupling region via said supporting area.

11. The broadband system according to claim 9 , wherein a matching structure is provided in said recessed coupling region, said matching structure being located between said substrate integrated waveguide and said air-filled portion of said recessed coupling region.

12. The broadband system according to claim 9 , wherein said recessed coupling region merges into said substrate integrated waveguide.

13. The broadband system according to claim 9 , wherein said transition section continuously tapers along said second interface in order to reduce a height of said transition section to a height of said air-filled portion of said recessed coupling region.

14. A broadband transition coupling for transition between a waveguide and a printed circuit board with a substrate integrated waveguide, said broadband transition coupling comprising:
a main body that encompasses an air-filled waveguide section and a transition section, said air-filled waveguide section comprising a first interface for said waveguide, said transition section providing a second interface for said printed circuit board, said transition section continuously tapering along said second interface in order to reduce a height of said transition section for transition coupling with said printed circuit board;
wherein said air-filled waveguide section and said transition section merge into each other via a bent section having a defined curvature;
wherein said bent section has a base with a supporting area; and
wherein said supporting area provided on said base directly contacts a surface within a recessed coupling region of said printed circuit board.

15. The broadband transition coupling according to claim 14 , wherein said transition section continuously tapers along said second interface in a step-less manner.

Assignees

• Rohde & Schwarz

Inventors

• Sporer Michael

Classifications

• H01P1/02

  Bends; Corners; Twists · CPC title

• H05K1/0237

  High frequency adaptations (H05K1/0216 takes precedence) · CPC title

• H01P3/121

  integrated in a substrate · CPC title

• H01P3/12

  Hollow waveguides (H01P3/20 takes precedence) · CPC title

• H01P5/024 Primary

  between hollow waveguides · CPC title