Tunable waveguide resonator

Patent metadata

Field	Value
Publication number	US-11264690-B2
Application number	US-201817051404-A
Country	US
Kind code	B2
Filing date	May 4, 2018
Priority date	May 4, 2018
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

The present disclosure relates to a tunable waveguide resonator comprising a rectangular waveguide part having electrically conducting inner walls, a first waveguide port and a second waveguide port. The resonator comprises at least one tuning element positioned between the waveguide ports, where each tuning element comprises an electrically conducting body and a holding rod. The holding rod is attached to the electrically conducting body and is movable from the outside of the resonator such that the electrically conducting body can be moved between a plurality of positions within the waveguide part by means of the holding rod.

First claim

The invention claimed is:

1. A tunable waveguide resonator comprising: a rectangular waveguide part having electrically conducting inner walls, a first waveguide port and a second waveguide port, where the resonator comprises at least one tuning element positioned between the waveguide ports, wherein each tuning element comprises an electrically conducting body and a holding rod, where the holding rod is attached to the electrically conducting body and is movable from the outside of the resonator such that the electrically conducting body can be moved between a plurality of positions within the waveguide part by the holding rod, wherein an interior of the rectangular waveguide part between the waveguide ports comprises only the electrically conducting body and the holding rod for each tuning element.

2. The tunable waveguide resonator according to claim 1 , wherein the waveguide ports are constituted by iris openings, wherein each iris opening partially closes the waveguide part.

3. The tunable waveguide resonator according to claim 1 , wherein the holding rod is electrically conducting.

4. The tunable waveguide resonator according to claim 1 , wherein the holding rod is extending through the waveguide part via corresponding apertures, where these apertures cross a plane running through the waveguide part parallel to an extension axis of the holding rod when mounted, where only a mode with an electrical wall in the plane is excited within the apertures such that power leakage via the apertures is avoided.

5. The tunable waveguide resonator according to claim 1 , wherein the holding rod is connected to an electrically controllable motor.

6. The tunable waveguide resonator according to claim 1 , wherein the electrically conducting body is a cylindrical part.

7. The tunable waveguide resonator according to claim 1 , wherein the tuning element is integrally formed as one part.

8. The tunable waveguide resonator according to claim 1 , wherein the holding rod comprises two separate rod parts that are attached to opposite sides of the electrically conducting body.

9. The tunable waveguide resonator according to claim 1 , wherein the holding rod comprises one integral part that is running through the electrically conducting body.

10. The tunable waveguide resonator of claim 1 , wherein the holding rod is extending through the waveguide part via corresponding apertures, where the apertures comprise threads that engage corresponding threads in the holding rod and wherein by means of the threads angular rotation of the holding rod is converted to linear movement of the electrically conducting body inside the waveguide part.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Deleniv Anatoli
• Persson Ove

Classifications

• H01P7/06 Primary

  Cavity resonators · CPC title

• H01P1/207

  Hollow waveguide filters (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence) · CPC title