Waveguide bend

• US 20080018420A1
• Filed: 07/20/2007
• Published: 01/24/2008
• Est. Priority Date: 07/20/2006
• Status: Active Grant

• Current Assignee: Kathrein-Werke KG. (Kathrein SE)
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Prassmayer, Peter, Blaier, Werner, Kaczmarski, Krzysztof
• Granted Patent: US 7,750,763 B2
• Time in Patent Office: Days
• US Class Current: 333/249
• CPC Class Codes: H01P 1/022 in waveguides of polygonal cross-section H01P1/065 takes precedence

Abstract

An improved 90° waveguide bend has the following features:

• • the waveguide bend has two waveguide connectors located perpendicularly to each other,
  • the waveguide connectors have a square internal cross section having an edge length (a),
  • between the two waveguide connectors there is provided an angular portion producing the 90° change in direction,
  • the angular portion has externally to the 90° change in direction a chamfer as a delimiting wall for the waveguide bend, the waveguide channel being outwardly delimited by the chamfer, and
  • the chamfer has in the plane of curvature a length corresponding to the edge length (a) of the waveguide connectors which are square in cross section, ± less than 0.5%.

Claims

1. A 90°

waveguide bend having the following features;

the waveguide bend has two waveguide connectors located perpendicularly to each other,

the waveguide connectors have a square internal cross section having an edge length (a),

between the two waveguide connectors there is provided an angular portion producing the 90°

change in direction,

the angular portion has externally to the 90′

change in direction a chamfer as a delimiting wall for the waveguide bend, the waveguide channel being outwardly delimited by the chamfer,

characterized by the following further features;

the chamfer has in the plane of curvature a length corresponding to the edge length (a) of the waveguide connectors which are square in cross section, ±

less than 0.5%.

2. The 90°

waveguide bend as claimed in claim 1, wherein the delimiting wall, defined by the chamfer, of the waveguide bend is square.

3. The 90°

waveguide bend as claimed in claim 1, wherein the chamfer is oriented perpendicularly to the bisecting line of the 90°

waveguide bend.

4. The 90°

waveguide bend as claimed in claim 1, wherein the chamfer is located perpendicularly to an internal edge at which, internally to the 90′

bend, the two waveguide connectors abut each other with their internal wall portions.

5. The 90°

waveguide bend as claimed in claim 1, wherein the chamfer merges with two external compensating wall portions each located in the extension of the respective outer wall portion of the two waveguide connectors.

6. The 90°

waveguide bend as claimed in claim 1, wherein the length of the internal and the external wall portions is preselectable and/or variable in the direction of propagation of the electromagnetic waves on the connectors.

7. The 90°

waveguide bend as claimed in claim 1, wherein the waveguide bend is configured so as to allow a propagation of an electromagnetic wave in an angular range of from 85°

to 100°

, preferably 85°

to 95°

.

8. The 90°

waveguide bend as claimed in claim 1, wherein the waveguide bend is configured as a metal cast part.