Waveguide device

Patent metadata

Field	Value
Publication number	US-10027011-B2
Application number	US-201515322767-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Sep 9, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

The waveguide device, in which first/second openings are formed at end parts of a waveguide path, comprises a waveguide path obtained by uniting first/second waveguides. The first waveguide is provided with a first recessed part which has an opening with a same shape as the first opening and has a bottom part formed in a first direction as seen from the opening. The second waveguide is provided with a second recessed part which has an opening with a same shape as the second opening and has a bottom part formed in a second direction as seen from the opening. The first/second waveguides are united in a manner such that, positions of the bottom parts of the first/second recessed parts are different from each other in a direction differing from the first/second directions, and the first/second recessed parts connect with each other at the respective bottom parts.

First claim

The invention claimed is:

1. A waveguide device ( 100 ) in which a first opening ( 11 ) and a second opening ( 12 ) are formed at end parts of a waveguide path, the waveguide device ( 100 ) comprising:
a waveguide path obtained by uniting a first waveguide ( 1101 ) and a second waveguide ( 1201 ), wherein
the first waveguide ( 1101 ) is provided with a first recessed part ( 2101 b ) which has an opening with a same shape as the first opening ( 11 ) and also has a bottom part being formed in a first direction ( 1010 ) as seen from the opening of the first recessed part ( 2101 b ),
the second waveguide ( 1201 ) is provided with a second recessed part ( 2201 b ) which has an opening with a same shape as the second opening ( 12 ) and also has a bottom part being formed in a second direction ( 1020 ) as seen from the opening of the second recessed part ( 2201 b ), and
the first waveguide ( 1101 ) and the second waveguide ( 1201 ) are united in a manner such that,
center positions of the first and second openings ( 11 , 12 ) are different from each other in a direction being different from the first and second directions ( 1010 , 1020 ),
spatial regions of the bottom parts of the first and second recessed part ( 2101 b , 2201 b ) partly overlap with each other in the different direction,
a length of a region ( 1305 ) where the spatial regions of the bottom parts of the first and second recessed part ( 2101 b , 2201 b ) partly overlap is equal to or less than ½of an in-tube wavelength of electromagnetic waves propagating in the waveguide path, and
the first and second recessed parts ( 2101 b , 2201 b ) connect with each other at the respective bottom parts.

2. The waveguide device ( 100 ) according to claim 1 , further comprising an iris-like internal wall ( 1501 ; 1502 ) which is formed on at least one of the first and second recessed parts ( 2101 b , 2201 b ).

3. The waveguide device ( 100 ) according to claim 1 , further comprising a protruding face ( 1104 ; 1204 ) which is formed on at least one of the bottom parts of the first and second recessed parts ( 2101 b , 2201 b ).

4. The waveguide device ( 100 ) according to claim 3 , wherein the protruding face ( 1104 ; 1204 ) is formed in a step-like shape, and allows dividing the wavelength device ( 100 ) at a position of one plane closest to an opening part side of the step-like protruding face ( 1104 ; 1204 ).

5. The waveguide device ( 100 ) according to claim 1 , wherein
the first opening ( 11 ) has a first shape having a long side direction and a short side direction,
the second opening ( 12 ) has a second shape having a long side direction and a short side direction, and
the long side directions of the first and second shapes are different from each other.

6. The waveguide device ( 100 ) according to claim 5 , wherein the first and second shapes are both rectangles, rounded-cornered squares, or ellipses.

7. The waveguide device ( 100 ) according to claim 5 , wherein
the first and second shapes are both rectangles or rounded-cornered squares,
the first recessed part ( 2101 b ) is defined by a first internal wall ( 1101 a ) including: a pair of first planes ( 1106 a , 1106 b ) which are separately formed in the long side direction of the first shape; a pair of second planes ( 1105 a , 1105 b ) which are separately formed in the short side direction of the first shape; and a first end plane ( 1103 ) which is formed on the bottom part of the first recessed part,
the second recessed part ( 2201 b ) is defined by a second internal wall ( 1201 a ) including: a pair of third planes ( 1205 a , 1205 b ) which are disposed in the long side direction of the second shape; a pair of fourth planes ( 1206 a , 1206 b ) which are disposed in the short side direction of the second shape; and a second end plane ( 1203 ) which is formed on the bottom part of the second recessed part ( 2201 b ), and
a plane included in at least one of plane sets has an overlap range, said plane sets being a set of the first end plane ( 1103 ) of the first recessed part ( 2101 b ) and one of the pair of third planes ( 1205 a , 1205 b ) of the second recessed part ( 2201 b ), and a set of one of the pair of second planes ( 1105 a , 1105 b ) of the first recessed part ( 2101 b ) and the second end plane ( 1203 ) of the second recessed part ( 2201 b ).

Assignees

• Mitsubishi Electric Corp

Inventors

• Hirota Akimichi
• Tahara Yukihiro
• Maruyama Takashi
• Takahashi Tomohiro
• Yamashita Kazuyoshi

Classifications

• H01P1/022

  in waveguides of polygonal cross-section (H01P1/065 takes precedence) · CPC title

• H01P1/02 Primary

  Bends; Corners; Twists · CPC title

• H01P3/12 Primary

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