CN104538719A - Broadband ortho-mode coupler - Google Patents
Broadband ortho-mode coupler Download PDFInfo
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- CN104538719A CN104538719A CN201510057700.9A CN201510057700A CN104538719A CN 104538719 A CN104538719 A CN 104538719A CN 201510057700 A CN201510057700 A CN 201510057700A CN 104538719 A CN104538719 A CN 104538719A
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Abstract
The invention discloses a broadband ortho-mode coupler which comprises a metal casing, wherein a chamber is arranged inside the metal casing, the chamber penetrates through the head surface and the tail surface of the metal casing and one side surface of the metal casing; a square waveguide and a first standard waveguide are respectively arranged at the head end and the tail end of the chamber, a second standard waveguide is arranged at the side end of the chamber; the square waveguide serves as a common port of the broadband ortho-mode coupler, the first standard waveguide serves a direct-connection port of the broadband ortho-mode coupler, the second standard waveguide serves a coupling port of the broadband ortho-mode coupler; a waveguide assembly the size of which gradually varies is arranged between the common port and the direct-connection port to replace a metal diaphragm, so that a vertical polarization electromagnetic wave and a horizontal polarization electromagnetic wave are separated through the waveguide assembly the size of which gradually varies and are respectively output through the direct-connection port and the coupling port. According to the broadband ortho-mode coupler, the metal diaphragm is not used, so that the processing difficulty is reduced; meanwhile, because the metal diaphragm is not provided, the risk of breaking the metal diaphragm does not exists, so that the reliability of a device is improved.
Description
Technical field
The present invention relates to coupler technologies field, particularly relate to a kind of broadband orthomode coupler.
Background technology
Orthomode coupler, as the vitals realizing dual polarization antenna feeder, is nowadays widely used in satellite communication and military radar etc., is a kind of very common device.Existing orthomode coupler includes a metallic membrane usually.The Main Function of this metallic membrane is to be separated perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave.
But along with the development of remote sensing technology, the frequency of radiometer work improves constantly, and its frequency enters millimere-wave band, and the size of orthomode coupler has also reached a millimeter magnitude, and its requirement on machining accuracy even reaches centimillimetre magnitude.The metallic membrane of conventional orthogonal mode coupler causes the technological requirement of machining more and more higher under so high required precision on the one hand; On the other hand because metallic membrane is very thin, being subject to vibrating, under the effect of extruding or other ballistic factors, distortion may being caused even to rupture, thus cause the inefficacy of orthomode coupler.
Thus, be necessary to improve existing orthomode coupler.
Summary of the invention
The object of the present invention is to provide a kind of broadband orthomode coupler, to solve the problem that existing orthomode coupler needs metallic membrane.
In order to realize above object, the invention provides a kind of broadband orthomode coupler, comprising metal-back, described metal-back inside is provided with a chamber, and the head and the tail that described chamber runs through described metal-back are relative to a side of two sides and described metal-back;
Be separately positioned on the rectangular waveguide at the head and the tail two ends of described chamber, the first standard waveguide, and be arranged on second standard waveguide of side of described chamber; Wherein, described rectangular waveguide is as the public port of this broadband orthomode coupler, and described first standard waveguide is as the straight-through port of this broadband orthomode coupler, and described second standard waveguide is as the coupling port of this broadband orthomode coupler; The waveguide assembly substituted metal diaphragm of size gradation is set between described public port and described straight-through port, perpendicular polarization electromagnetic wave is separated with the waveguide assembly of horizontally-polarized electromagnetic wave by described size gradation, and exports respectively by described straight-through port and described coupling port.
Preferably, the waveguide assembly of described size gradation comprises First Transition waveguide, the second transition waceguide, the 3rd transition waceguide, the first straight-through transition waceguide, the second straight-through transition waceguide, the 3rd straight-through transition waceguide, the 4th straight-through transition waceguide, the first coupling transition waceguide, the second coupling transition waceguide, the 3rd coupling transition waceguide; If the Electromagnetic Wave Propagation direction in coupling port is X-axis positive direction, the Electromagnetic Wave Propagation direction in straight-through port is Y-axis positive direction, and the direction perpendicular to the plane at X-direction and Y direction place is Z-direction; Wherein:
Described First Transition waveguide, the second transition waceguide, the 3rd transition waceguide, the first straight-through transition waceguide, the second straight-through transition waceguide, the 3rd straight-through transition waceguide, the 4th straight-through transition waceguide are connected successively;
Described first coupling transition waceguide is positioned at the bottom of described 3rd transition waceguide, and is symmetrically distributed in the both sides of described 3rd transition waceguide in Z-direction, and is connected with described 3rd transition waceguide; And the tail end of described first coupling transition waceguide flushes with the tail end of described 3rd transition waceguide, the length being shorter in length than described 3rd projection of transition waceguide in Y-axis of described first projection of coupling transition waceguide in Y-axis;
Described second coupling transition waceguide is positioned at the bottom of the described first straight-through transition waceguide, and is symmetrically distributed in the both sides of the described first straight-through transition waceguide in Z-direction, and is connected with the described first straight-through transition waceguide; And the head end of described second coupling transition waceguide is connected with the described first tail end being coupled transition waceguide;
Described 3rd coupling transition waceguide is positioned at the bottom of the described second straight-through transition waceguide, and is symmetrically distributed in the both sides of the described second straight-through transition waceguide in Z-direction, and is connected with the described second straight-through transition waceguide; And the head end of described 3rd coupling transition waceguide is connected with the described second tail end being coupled transition waceguide;
Described First Transition waveguide is connected with described public port, and the described 4th straight-through transition waceguide is connected with described straight-through port; Described 3rd coupling transition waceguide and the described second straight-through transition waceguide are connected with described coupling port;
Further, the length of described First Transition waveguide, the second transition waceguide, the 3rd projection of transition waceguide on Z axis is successively decreased successively relative to the length of the projection of described public port on Z axis; The length of the described first straight-through transition waceguide, the second straight-through projection of transition waceguide on Z axis is successively decreased successively relative to the length of described 3rd projection of transition waceguide on Z axis; The length of the described 3rd straight-through projection of transition waceguide on Z axis is less than the length of the described second straight-through projection of transition waceguide on Z axis, the length of the described 4th straight-through projection of transition waceguide on Z axis is less than or equal to the length of the described 3rd straight-through projection of transition waceguide on Z axis, and the length of the described 4th straight-through projection of transition waceguide on Z axis is more than or equal to the length of the projection of described straight-through port on Z axis; Be coupled with first of its both sides total length of the projection of transition waceguide on Z axis of described 3rd transition waceguide is more than or equal to the length of the projection of described coupling port on Z axis; Be coupled with second of its both sides total length of the projection of transition waceguide on Z axis of described first straight-through transition waceguide is more than or equal to the length of the projection of described coupling port on Z axis; Be coupled with the 3rd of its both sides total length of the projection of transition waceguide on Z axis of described second straight-through transition waceguide is more than or equal to the length of the projection of described coupling port on Z axis.
Preferably, described 3rd coupling transition waceguide is formed by connecting by a rectangular waveguide and a triangle waveguide.
Preferably, described First Transition waveguide, the second transition waceguide, the 3rd transition waceguide are rectangular waveguide, and the length of side of described First Transition waveguide is less than the length of side of described public port, the length of side of described second transition waceguide is less than the length of side of described First Transition waveguide, and the length of side of described 3rd transition waceguide is less than the length of side of described second transition waceguide.
Preferably, the length of the described first straight-through projection of transition waceguide in X-axis is equal with the length of described 3rd projection of transition waceguide in X-axis, the length of the described second straight-through projection of transition waceguide in X-axis is equal with the length of the described first straight-through projection of transition waceguide in X-axis, the length of the described 3rd straight-through projection of transition waceguide in X-axis is greater than the length of the described second straight-through projection of transition waceguide in X-axis, the length of the described 4th straight-through projection of transition waceguide in X-axis is greater than the length of the described 3rd straight-through projection of transition waceguide in X-axis, the length of the described 4th straight-through projection of transition waceguide in X-axis is less than the length of the projection of described straight-through port in X-axis.
Preferably, described metal-back is provided with a groove, for alleviating the weight of broadband orthomode coupler.
Preferably, described metal-back is provided with several installing holes.
In order to realize above object, the invention provides a kind of broadband orthomode coupler, comprising:
Metal-back, described metal-back inside is provided with a chamber, and the head and the tail that described chamber runs through described metal-back are relative to a side of two sides and described metal-back;
Be separately positioned on the rectangular waveguide at described chamber head and the tail two ends, the first standard waveguide, and be arranged on the second standard waveguide of side; Wherein, described rectangular waveguide is as the public port of this broadband orthomode coupler, and described first standard waveguide is as the straight-through port of this broadband orthomode coupler, and described second standard waveguide is as the coupling port of this broadband orthomode coupler; Between described public port with described straight-through port, be disposed with First Transition waveguide, the second transition waceguide, the 3rd transition waceguide, the first straight-through transition waceguide, the second straight-through transition waceguide, the 3rd straight-through transition waceguide, the 4th straight-through transition waceguide, first transition waceguide, second transition waceguide, the 3rd that is coupled that is coupled is coupled transition waceguide; If the Electromagnetic Wave Propagation direction in coupling port is X-axis positive direction, the Electromagnetic Wave Propagation direction in straight-through port is Y-axis positive direction, and the direction perpendicular to the plane at X-direction and Y direction place is Z-direction; Wherein:
Described First Transition waveguide, the second transition waceguide, the 3rd transition waceguide, the first straight-through transition waceguide, the second straight-through transition waceguide, the 3rd straight-through transition waceguide, the 4th straight-through transition waceguide are connected successively;
Described first coupling transition waceguide is positioned at the bottom of described 3rd transition waceguide, and is symmetrically distributed in the both sides of described 3rd transition waceguide in Z-direction, and is connected with described 3rd transition waceguide; And the tail end of described first coupling transition waceguide flushes with the tail end of described 3rd transition waceguide, the length being shorter in length than described 3rd projection of transition waceguide in Y-axis of described first projection of coupling transition waceguide in Y-axis;
Described second coupling transition waceguide is positioned at the bottom of the described first straight-through transition waceguide, and is symmetrically distributed in the both sides of the described first straight-through transition waceguide in Z-direction, and is connected with the described first straight-through transition waceguide; And the head end of described second coupling transition waceguide is connected with the described first tail end being coupled transition waceguide;
Described 3rd coupling transition waceguide is positioned at the bottom of the described second straight-through transition waceguide, and is symmetrically distributed in the both sides of the described second straight-through transition waceguide in Z-direction, and is connected with the described second straight-through transition waceguide; And the head end of described 3rd coupling transition waceguide is connected with the described second tail end being coupled transition waceguide;
Described First Transition waveguide is connected with described public port, and the described 4th straight-through transition waceguide is connected with described straight-through port; Described 3rd coupling transition waceguide and the described second straight-through transition waceguide are connected with described coupling port;
Further, the length of described First Transition waveguide, the second transition waceguide, the 3rd projection of transition waceguide on Z axis is successively decreased successively relative to the length of the projection of described public port on Z axis; The length of the described first straight-through transition waceguide, the second straight-through projection of transition waceguide on Z axis is successively decreased successively relative to the length of described 3rd projection of transition waceguide on Z axis; The length of the described 3rd straight-through projection of transition waceguide on Z axis is less than or equal to the length of the described second straight-through projection of transition waceguide on Z axis, the length of the described 4th straight-through projection of transition waceguide on Z axis is less than or equal to the length of the described 3rd straight-through projection of transition waceguide on Z axis, and the length of the described 4th straight-through projection of transition waceguide on Z axis is more than or equal to the length of the projection of described straight-through port on Z axis; Be coupled with first of its both sides total length of the projection of transition waceguide on Z axis of described 3rd transition waceguide is more than or equal to the length of the projection of described coupling port on Z axis; Be coupled with second of its both sides total length of the projection of transition waceguide on Z axis of described first straight-through transition waceguide is more than or equal to the length of the projection of described coupling port on Z axis; Be coupled with the 3rd of its both sides total length of the projection of transition waceguide on Z axis of described second straight-through transition waceguide is more than or equal to the length of the projection of described coupling port on Z axis.
Preferably, described First Transition waveguide, the second transition waceguide, the 3rd transition waceguide are rectangular waveguide, and the length of side of described First Transition waveguide is less than the length of side of described public port, the length of side of described second transition waceguide is less than the length of side of described First Transition waveguide, and the length of side of described 3rd transition waceguide is less than the length of side of described second transition waceguide.
Preferably, the length of the described first straight-through projection of transition waceguide in X-axis is equal with the length of described 3rd projection of transition waceguide in X-axis, the length of the described second straight-through projection of transition waceguide in X-axis is equal with the length of the described first straight-through projection of transition waceguide in X-axis, the length of the described 3rd straight-through projection of transition waceguide in X-axis is greater than the length of the described second straight-through projection of transition waceguide in X-axis, the length of the described 4th straight-through projection of transition waceguide in X-axis is greater than the length of the described 3rd straight-through projection of transition waceguide in X-axis, the length of the described 4th straight-through projection of transition waceguide in X-axis is less than the length of the projection of described straight-through port in X-axis.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
1) broadband orthomode coupler of the present invention utilizes the waveguide assembly of size gradation that perpendicular polarization electromagnetic wave is separated with the waveguide assembly of horizontally-polarized electromagnetic wave by described size gradation, thus does not need to use metallic membrane, because this reducing the difficulty of processing; And owing to there is no metallic membrane, just there is not the risk that metallic membrane breaks, add the reliability of device.
2) broadband orthomode coupler of the present invention, its metal-back is provided with a groove, thus can alleviate the weight of broadband orthomode coupler; Make device lighter.
Accompanying drawing explanation
The overall structure figure of the broadband orthomode coupler that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the profile of Fig. 1 along A-A direction;
Fig. 3 is the standing-wave ratio curve that the coupling port of broadband orthomode coupler of the present invention and straight-through port measurement obtain.
Embodiment
Below in conjunction with the drawings and specific embodiments, the broadband orthomode coupler that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only for object that is convenient, the aid illustration embodiment of the present invention lucidly.
Embodiment 1
Refer to Fig. 1 to Fig. 2, the overall structure figure of the broadband orthomode coupler that Fig. 1 provides for the embodiment of the present invention, Fig. 2 are the profile of Fig. 1 along A-A direction; As shown in Figures 1 and 2, broadband orthomode coupler provided by the invention comprises metal-back 100, and described metal-back 100 inside is provided with a chamber, and this chamber runs through the relative two sides of head and the tail of metal-back 100 and a side of metal-back 100;
Be respectively arranged with rectangular waveguide, the first standard waveguide at the head and the tail two ends of this chamber, and be arranged on second standard waveguide of side of described chamber; Wherein, rectangular waveguide as public port 1, first standard waveguide of this broadband orthomode coupler as straight-through port 9, second standard waveguide of this broadband orthomode coupler as the coupling port 10 of this broadband orthomode coupler; The waveguide assembly substituted metal diaphragm of size gradation is set between public port 1 and described straight-through port 9, perpendicular polarization electromagnetic wave is separated with the waveguide assembly of horizontally-polarized electromagnetic wave by described size gradation, and exports with described coupling port 10 respectively by described straight-through port 9.
The present invention is separated perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave owing to adopting the waveguide assembly of size gradation, does not thus need in this broadband orthomode coupler to arrange metallic membrane, thus reduces the difficulty of processing; And owing to there is no metallic membrane, just there is not the risk that metallic membrane breaks, add the reliability of device.
Below for convenience of description, if the Electromagnetic Wave Propagation direction in coupling port 10 is X-axis positive direction, Electromagnetic Wave Propagation direction in straight-through port 9 is Y-axis positive direction, be that Z axis positive direction (is generically explained as follows specific in Fig. 1: X-axis positive direction is the outside direction of vertical paper perpendicular to X-direction and the plane direction upwards at Y direction place, Y-axis positive direction refers to along paper direction to the right, and Z axis positive direction refers to along paper direction upwards).
Wherein, the waveguide assembly of above-mentioned size gradation comprises First Transition waveguide 2, second transition waceguide 3, the straight-through transition waceguide 6 of the 3rd transition waceguide 4, first straight-through transition waceguide 5, second, the 3rd leads directly to transition waceguide 7, the 4th straight-through transition waceguide 8, first coupling transition waceguide 11, second is coupled transition waceguide 12, the 3rd coupling transition waceguide 13; Wherein:
First Transition waveguide 2, second transition waceguide 3, the straight-through transition waceguide 6 of the 3rd transition waceguide 4, first straight-through transition waceguide 5, second, the 3rd straight-through transition waceguide 7, the 4th straight-through transition waceguide 8 are connected successively;
First coupling transition waceguide 11 is positioned at the bottom of the 3rd transition waceguide 4, and (bottom refers to toward X forward side, hereafter do similar explanation), and (be namely symmetrically distributed in the both sides of the 3rd transition waceguide 4 along Z axis both forward and reverse directions in the both sides that Z-direction is symmetrically distributed in the 3rd transition waceguide 4, hereafter do similar explanation), and be connected with the 3rd transition waceguide 4; And (tail end refers to the end of the first coupling transition waceguide 11 in Y-axis positive direction to the tail end of the first coupling transition waceguide 11, hereafter do similar explanation) flush with the tail end (tail end refers to the end of the 3rd transition waceguide 4 in Y-axis positive direction) of the 3rd transition waceguide 4, the length being shorter in length than the 3rd projection of transition waceguide 4 in Y-axis of the first projection of coupling transition waceguide 11 in Y-axis;
Second coupling transition waceguide 12 is positioned at the bottom of the first straight-through transition waceguide 5, and is symmetrically distributed in the both sides of the first straight-through transition waceguide 5 in Z-direction, and is connected with the first straight-through transition waceguide 5; And the head end of the second coupling transition waceguide 12 is connected with the first tail end being coupled transition waceguide 11;
3rd coupling transition waceguide 13 is positioned at the bottom of the second straight-through transition waceguide 6, and is symmetrically distributed in the both sides of the second straight-through transition waceguide 6 in Z-direction, and is connected with the second straight-through transition waceguide 6; And the head end of the 3rd coupling transition waceguide 13 is connected with the second tail end being coupled transition waceguide 12;
First Transition waveguide 2 is connected with public port 1, and the 4th straight-through transition waceguide 8 is connected with straight-through port 9; 3rd coupling transition waceguide 13 and the second straight-through transition waceguide 6 are connected with coupling port 10;
Further, the length of First Transition waveguide 2, second transition waceguide 3, the 3rd projection of transition waceguide 4 on Z axis is successively decreased successively relative to the length of the projection of public port 1 on Z axis; The length of the straight-through projection of transition waceguide 6 on Z axis of the first straight-through transition waceguide 5, second is successively decreased successively relative to the length of the 3rd projection of transition waceguide 4 on Z axis; The length of the 3rd straight-through projection of transition waceguide 7 on Z axis is less than or equal to the length of the second straight-through projection of transition waceguide 6 on Z axis, the length of the 4th straight-through projection of transition waceguide 8 on Z axis is less than or equal to the length of the 3rd straight-through projection of transition waceguide 7 on Z axis, and the length of the 4th straight-through projection of transition waceguide 8 on Z axis is more than or equal to the length of the projection of straight-through port 9 on Z axis; Be coupled with first of its both sides total length of the projection of transition waceguide 11 on Z axis of 3rd transition waceguide 4 is more than or equal to the length of the projection of coupling port 10 on Z axis; Be coupled with second of its both sides total length of the projection of transition waceguide 12 on Z axis of first straight-through transition waceguide 5 is more than or equal to the length of the projection of coupling port 10 on Z axis; Be coupled with the 3rd of its both sides total length of the projection of transition waceguide 13 on Z axis of second straight-through transition waceguide 6 is more than or equal to the length of the projection of coupling port 10 on Z axis
.
Further, the 3rd coupling transition waceguide 13 is formed by connecting by a rectangular waveguide and a triangle waveguide.
First Transition waveguide 2, second transition waceguide 3, the 3rd transition waceguide 4 are rectangular waveguide, and particularly, First Transition waveguide 2, second transition waceguide 3, the 3rd transition waceguide 4 are rectangular waveguide in XZ plane; The length of side of First Transition waveguide 2 is less than the length of side of public port 1, and the length of side of the second transition waceguide 3 is less than the length of side of First Transition waveguide 2, and the length of side of the 3rd transition waceguide 4 is less than the length of side of the second transition waceguide 3.
The length of the first straight-through projection of transition waceguide 5 in X-axis is equal with the length of the 3rd projection of transition waceguide 4 in X-axis, the length of the second straight-through projection of transition waceguide 6 in X-axis is equal with the length of the first straight-through projection of transition waceguide 5 in X-axis, the length of the 3rd straight-through projection of transition waceguide 7 in X-axis is greater than the length of the second straight-through projection of transition waceguide 6 in X-axis, the length of the 4th straight-through projection of transition waceguide 8 in X-axis is greater than the length of the 3rd straight-through projection of transition waceguide 7 in X-axis, the length of the 4th straight-through projection of transition waceguide 8 in X-axis is less than the length of the projection of straight-through port 9 in X-axis.And, the length of the first projection of coupling transition waceguide 11 in X-axis is less than the length of the 3rd projection of transition waceguide 4 in X-axis, the length of the second projection of coupling transition waceguide 12 in X-axis is less than the length of the first straight-through projection of transition waceguide 5 in X-axis, and the length of the 3rd projection of coupling transition waceguide 13 in X-axis is less than the length of the second straight-through projection of transition waceguide 6 in X-axis; The length of the first projection of coupling transition waceguide 11 in X-axis is less than the length of the second projection of coupling transition waceguide 12 in X-axis, thus the first coupling transition waceguide 11 and second is coupled stepped between transition waceguide 12 being connected; The length being less than the projection of square wave in X-axis in the 3rd coupling transition waceguide 13 of the length of the second projection of coupling transition waceguide 12 in X-axis, thus the second coupling transition waceguide 12 and the 3rd is coupled stepped between transition waceguide 13 being connected.
In a preferred embodiment, metal-back 100 is provided with a groove 200, for alleviating the weight of broadband orthomode coupler.And metal-back 100 is provided with several installing holes 300, installation when using for broadband orthomode coupler of the present invention.
Embodiment 2
Refer to Fig. 1 to Fig. 2, below for convenience of description, if the Electromagnetic Wave Propagation direction in coupling port 10 is X-axis positive direction, Electromagnetic Wave Propagation direction in straight-through port 9 is Y-axis positive direction, be that Z axis positive direction (is generically explained as follows specific in Fig. 1: X-axis positive direction refers to the direction that vertical paper is outside perpendicular to X-direction and the direction of the plane at Y direction place, Y-axis positive direction refers to along paper direction to the right, and Z axis positive direction refers to along paper direction upwards).
As shown in Figure 1 to Figure 2, broadband orthomode coupler provided by the invention, comprising:
Metal-back 100, metal-back 100 inside is provided with a chamber, and chamber runs through the relative two sides of head and the tail of metal-back 100 and a side of metal-back 100;
Be separately positioned on the rectangular waveguide at chamber head and the tail two ends, the first standard waveguide, and be arranged on the second standard waveguide of side; Wherein, rectangular waveguide as public port 1, first standard waveguide of this broadband orthomode coupler as straight-through port 9, second standard waveguide of this broadband orthomode coupler as the coupling port 10 of this broadband orthomode coupler; Between public port 1 with straight-through port 9, be disposed with First Transition waveguide 2, second transition waceguide 3, the straight-through transition waceguide 6 of the straight-through transition waceguide of the 3rd transition waceguide 4, first 5, second, the 3rd straight-through transition waceguide 7, the 4th straight-through transition waceguide 8, first transition waceguide 11, second transition waceguide 12, the 3rd that is coupled that is coupled is coupled transition waceguide 13; Wherein:
First Transition waveguide 2, second transition waceguide 3, the straight-through transition waceguide 6 of the 3rd transition waceguide 4, first straight-through transition waceguide 5, second, the 3rd straight-through transition waceguide 7, the 4th straight-through transition waceguide 8 are connected successively;
First coupling transition waceguide 11 is positioned at the bottom of the 3rd transition waceguide 4, and (bottom refers to toward X-direction side, hereafter do similar explanation), and (be namely symmetrically distributed in the both sides of the 3rd transition waceguide 4 along Z axis both forward and reverse directions in the both sides that Z-direction is symmetrically distributed in the 3rd transition waceguide 4, hereafter do similar explanation), and be connected with the 3rd transition waceguide 4; And (tail end refers to the end of the first coupling transition waceguide 11 in Y-axis positive direction to the tail end of the first coupling transition waceguide 11, hereafter do similar explanation) flush with the tail end (tail end refers to the end of the 3rd transition waceguide 4 in Y-axis positive direction) of the 3rd transition waceguide 4, the length being shorter in length than the 3rd transition waceguide 4 of the first coupling transition waceguide 11;
Second coupling transition waceguide 12 is positioned at the bottom of the first straight-through transition waceguide 5, and is symmetrically distributed in the both sides of the first straight-through transition waceguide 5 in Z-direction, and is connected with the first straight-through transition waceguide 5; And the head end of the second coupling transition waceguide 12 is connected with the first tail end being coupled transition waceguide 11;
3rd coupling transition waceguide 13 is positioned at the bottom of the second straight-through transition waceguide 6, and is symmetrically distributed in the both sides of the second straight-through transition waceguide 6 in Z-direction, and is connected with the second straight-through transition waceguide 6; And the head end of the 3rd coupling transition waceguide 13 is connected with the second tail end being coupled transition waceguide 12;
First Transition waveguide 2 is connected with public port 1, and the 4th straight-through transition waceguide 8 is connected with straight-through port 9; 3rd coupling transition waceguide 13 and the second straight-through transition waceguide 6 are connected with coupling port 10;
Further, the length of First Transition waveguide 2, second transition waceguide 3, the 3rd projection of transition waceguide 4 on Z axis is successively decreased successively relative to the length of the projection of public port 1 on Z axis; The length of the straight-through projection of transition waceguide 6 on Z axis of the first straight-through transition waceguide 5, second is successively decreased successively relative to the length of the 3rd projection of transition waceguide 4 on Z axis; The length of the 3rd straight-through projection of transition waceguide 7 on Z axis is less than or equal to the length of the second straight-through projection of transition waceguide 6 on Z axis, the length of the 4th straight-through projection of transition waceguide 8 on Z axis is less than or equal to the length of the 3rd straight-through projection of transition waceguide 7 on Z axis, and the length of the 4th straight-through projection of transition waceguide 8 on Z axis is more than or equal to the length of the projection of straight-through port 9 on Z axis; Be coupled with first of its both sides total length of the projection of transition waceguide 11 on Z axis of 3rd transition waceguide 4 is more than or equal to the length of the projection of coupling port 10 on Z axis; Be coupled with second of its both sides total length of the projection of transition waceguide 12 on Z axis of first straight-through transition waceguide 5 is more than or equal to the length of the projection of coupling port 10 on Z axis; Be coupled with the 3rd of its both sides total length of the projection of transition waceguide 13 on Z axis of second straight-through transition waceguide 6 is more than or equal to the length of the projection of coupling port 10 on Z axis.
Further, the 3rd coupling transition waceguide 13 is formed by connecting by a rectangular waveguide and a triangle waveguide.
First Transition waveguide 2, second transition waceguide 3, the 3rd transition waceguide 4 are rectangular waveguide, and particularly, First Transition waveguide 2, second transition waceguide 3, the 3rd transition waceguide 4 are rectangular waveguide in XZ plane; The length of side of First Transition waveguide 2 is less than the length of side of public port 1, and the length of side of the second transition waceguide 3 is less than the length of side of First Transition waveguide 2, and the length of side of the 3rd transition waceguide 4 is less than the length of side of the second transition waceguide 3.
The length of the first straight-through projection of transition waceguide 5 in X-axis is equal with the length of the 3rd projection of transition waceguide 4 in X-axis, the length of the second straight-through projection of transition waceguide 6 in X-axis is equal with the length of the first straight-through projection of transition waceguide 5 in X-axis, the length of the 3rd straight-through projection of transition waceguide 7 in X-axis is greater than the length of the second straight-through projection of transition waceguide 6 in X-axis, the length of the 4th straight-through projection of transition waceguide 8 in X-axis is greater than the length of the 3rd straight-through projection of transition waceguide 7 in X-axis, the length of the 4th straight-through projection of transition waceguide 8 in X-axis is less than the length of the projection of straight-through port 9 in X-axis.And, the length of the first projection of coupling transition waceguide 11 in X-axis is less than the length of the 3rd projection of transition waceguide 4 in X-axis, the length of the second projection of coupling transition waceguide 12 in X-axis is less than the length of the first straight-through projection of transition waceguide 5 in X-axis, and the length of the 3rd projection of coupling transition waceguide 13 in X-axis is less than the length of the second straight-through projection of transition waceguide 6 in X-axis; The length of the first projection of coupling transition waceguide 11 in X-axis is less than the length of the second projection of coupling transition waceguide 12 in X-axis, thus the first coupling transition waceguide 11 and second is coupled stepped between transition waceguide 12 being connected; The length being less than the projection of square wave in X-axis in the 3rd coupling transition waceguide 13 of the length of the second projection of coupling transition waceguide 12 in X-axis, thus the second coupling transition waceguide 12 and the 3rd is coupled stepped between transition waceguide 13 being connected.
In a preferred embodiment, metal-back 100 is provided with a groove 200, for alleviating the weight of broadband orthomode coupler.And metal-back 100 is provided with several installing holes 300, installation when using for broadband orthomode coupler of the present invention.
Below the principle of broadband orthomode coupler of the present invention is described:
Broadband orthomode coupler provided by the invention carrys out substituted metal diaphragm by the waveguide assembly of size gradation, is separated with horizontally-polarized electromagnetic wave perpendicular polarization electromagnetic wave.Particularly:
The change of waveguide dimensions can cause the change of waveguide impedance, is carry out impedance matching to perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave respectively by the essence that perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave carry out being separated; This is because perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave transmit can be partial to the path along impedance matching.
For broadband orthomode coupler of the present invention, electromagnetic transmission is specially: public port 1 inputs Dual-polarized electricity magnetic wave (referring to the hybrid circuit structure of perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave), this Dual-polarized electricity magnetic wave is successively in First Transition waveguide 2, second transition waceguide 3, transmit in 3rd transition waceguide 4, two bottom sides due to the 3rd transition waceguide 4 is symmetrically arranged with the first coupling transition waceguide 11, and the size of the first coupling transition waceguide 11 is different from the size of the 3rd transition waceguide 4, thus there is the transmission channel of two kinds of impedances, therefore, perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave can be partial to the most suitable path of impedance matching separately, thus there is preliminary separation,
And transferring to the second coupling transition waceguide 12 further can be separated further with after the assembly of the first straight-through transition waceguide 5, will be separated completely with after the assembly of the second straight-through transition waceguide 6 when transferring to the 3rd coupling transition waceguide 13.Wherein, perpendicular polarization electromagnetic wave can continue to transmit along the 3rd straight-through transition waceguide 7 and the 4th straight-through transition waceguide 8, and finally exports from straight-through port 9; Horizontally-polarized electromagnetic wave can to the second straight-through transition waceguide 6 to be coupled with the 3rd transition waceguide 13 lower transport and enter coupling port 10, and finally to export from coupling port 10.
Below provide a kind of specific design method of broadband orthomode coupler of the present invention:
In order to the convenience illustrated, to hereafter providing as given a definition: the parallel limit of waveguide n or port n and X-axis, Y-axis, Z axis is designated as L
nx, L
nY, L
nZ, wherein n is label, and 1≤n≤13; The limit that such as coupling port 10 is parallel to X-axis is designated as: L
10x, the limit that First Transition waveguide 2 is parallel on Z axis is similarly designated as L
2Z.
First, select the first appropriate standard waveguide as straight-through port 9 according to the operating frequency of the coupler that will design, and obtain the L of the first standard waveguide further
9zand L
9Ylength, note L
9zlength be a, L
9Ylength be b.
Then, one second standard waveguide is provided as coupling port 10, its L
10zlength is between a ~ 1.05a, L
10Ylength is between b ~ 1.05b, in the present invention's specific embodiment, can select L
10zlength is a, L
10Ylength is that second standard waveguide of b is as coupling port 10; Provide another section of rectangular waveguide again as the second straight-through transition waceguide 6, its one end is connected with coupling port 10 cross section and the L of the second straight-through transition waceguide 6
6Zmid point be positioned at the L of coupling port 10
10Zcenter line on, the L of the general second straight-through transition waceguide 6
6Ylength be about the L of coupling port 10
10Y1.5 times of length b, the L of the second straight-through transition waceguide 6
6Zlength be about the L of coupling port 10
10Z0.6 times of length a, the L of the second straight-through transition waceguide 6
6Xlength be about the L of coupling port 10
10Z0.7 times of length a; The L of the 3rd coupling transition waceguide the 13, three coupling transition waceguide 13 twice is respectively connected in the second straight-through transition waceguide 6 both sides
13Zlength adds the L of the second straight-through transition waceguide 6
6Zlength equals the L of coupling port 10
10Zlength a, the L of the 3rd coupling transition waceguide 13 rectangle part
13Xlength is about the L of the second straight-through transition waceguide 6
6Xthe half of length, the L of the 3rd coupling transition waceguide 13 rectangle part
13Ylength is about the L of the second straight-through transition waceguide 6
6Y1/4th of length; Dual polarized signals is from the second straight-through transition waceguide 6 left side input, horizontally-polarized electromagnetic wave exports from coupling port 10, perpendicular polarization electromagnetic wave exports on the right of the second straight-through transition waceguide 6, optimizing each waveguide dimensions makes the standing-wave ratio of two polarized electromagnetic waves minimum, the concrete standing-wave ratio being measured two polarized electromagnetic waves by the mode emulated, the minimum size of standing-wave ratio is optimized dimensions.
Then, the L of the straight-through transition waceguide 5 of the first straight-through transition waceguide 5, first is added on second straight-through transition waceguide 6 left side
5Xlength equals the L of the second straight-through transition waceguide 6
6Xlength, the L of the first straight-through transition waceguide 5
5Zlength is greater than the L of the second straight-through transition waceguide 6
6Zlength, the L of the first straight-through transition waceguide 5
5Ylength is less than the L of the second straight-through transition waceguide 6
6Ylength; The L of the second coupling transition waceguide 12
12Ylength equals the L of the first straight-through transition waceguide 5
5Ylength, the L of the second coupling transition waceguide 12
12Xlength is about the 3rd coupling transition waceguide 13 rectangle part L
13Xthe L of the 2/3rds, second coupling transition waceguide 12 of length
12Zthe twice of length adds the L of the first straight-through transition waceguide 5
5Zlength equals the L of coupling port 10
10Zlength, then suboptimization makes each waveguide dimensions make the standing-wave ratio of two polarized electromagnetic waves minimum.
So add the 3rd transition waceguide 4, first coupling transition waceguide 11 successively and optimize each size, add the 3rd straight-through transition waceguide 7, the 4th straight-through transition waceguide 8, straight-through port 9 optimize each size respectively, finally add the second transition waceguide 3, First Transition waveguide 2, public port 1 optimize each size respectively.Finally using the size of each waveguide making the standing-wave ratio of two polarized electromagnetic waves minimum after all waveguides all add as final size, obtain broadband orthomode coupler of the present invention.Wherein, what standing-wave ratio reflected is reflection of electromagnetic wave situation, and such as suppose that straight-through port 9 is by perpendicular polarization electromagnetic wave, coupling port 10 passes through horizontally-polarized electromagnetic wave.So its separately standing-wave ratio reflection be respective polarized electromagnetic wave reflection case.If reflect very little, so just can judge that perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave can normal separation.Known by EM theory, do not consider loss, transferred out by coupling port 10 even if the orthomode coupler of the failure perpendicular polarization electromagnetic wave of being come in by public port 1 is also little, therefore except transferring out except a part from straight-through port 9, remainder reflects away from public port 1.Therefore, investigate its respective standing-wave ratio and how can know its product quality.
Effect about broadband orthomode coupler provided by the invention refers to Fig. 3, as shown in Figure 3, in the frequency range of 50GHz-60GHz, the value of straight-through port standing-wave ratio and coupling port standing-wave ratio is all about 1.1, belong to the category that standing wave is smaller, illustrate that broadband orthomode coupler provided by the invention can be separated perpendicular polarization electromagnetic wave and horizontally-polarized electromagnetic wave effectively.
Above-described embodiment is only illustrate for convenience of description, and the interest field that the present invention advocates should be as the criterion with described in claim, but not is only limitted to described embodiment.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a broadband orthomode coupler, is characterized in that, comprises metal-back (100), and described metal-back (100) inside is provided with a chamber, and the head and the tail that described chamber runs through described metal-back (100) are relative to a side of two sides and described metal-back (100);
Be separately positioned on the rectangular waveguide at the head and the tail two ends of described chamber, the first standard waveguide, and be arranged on second standard waveguide of side of described chamber; Wherein, described rectangular waveguide is as the public port (1) of this broadband orthomode coupler, described first standard waveguide is as the straight-through port (9) of this broadband orthomode coupler, and described second standard waveguide is as the coupling port (10) of this broadband orthomode coupler; The waveguide assembly substituted metal diaphragm of size gradation is set between described public port (1) and described straight-through port (9), perpendicular polarization electromagnetic wave is separated with the waveguide assembly of horizontally-polarized electromagnetic wave by described size gradation, and exports respectively by described straight-through port (9) and described coupling port (10).
2. broadband orthomode coupler as claimed in claim 1, it is characterized in that, the waveguide assembly of described size gradation comprises First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4), the first straight-through transition waceguide (5), the second straight-through transition waceguide (6), the 3rd straight-through transition waceguide (7), the 4th straight-through transition waceguide (8), the first coupling transition waceguide (11), the second coupling transition waceguide (12), the 3rd coupling transition waceguide (13); If the Electromagnetic Wave Propagation direction in coupling port (10) is X-axis positive direction, the Electromagnetic Wave Propagation direction in straight-through port (9) is Y-axis positive direction, and the direction perpendicular to the plane at X-direction and Y direction place is Z-direction; Wherein:
Described First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4), the first straight-through transition waceguide (5), the second straight-through transition waceguide (6), the 3rd straight-through transition waceguide (7), the 4th straight-through transition waceguide (8) are connected successively;
Described first coupling transition waceguide (11) is positioned at the bottom of described 3rd transition waceguide (4), and is symmetrically distributed in the both sides of described 3rd transition waceguide (4) in Z-direction, and is connected with described 3rd transition waceguide (4); And the tail end of described first coupling transition waceguide (11) flushes with the tail end of described 3rd transition waceguide (4), the length being shorter in length than described 3rd transition waceguide (4) projection in Y-axis of described first coupling transition waceguide (11) projection in Y-axis;
Described second coupling transition waceguide (12) is positioned at the bottom of the described first straight-through transition waceguide (5), and is symmetrically distributed in the both sides of the described first straight-through transition waceguide (5) in Z-direction, and is connected with the described first straight-through transition waceguide (5); And the head end and described first of described second coupling transition waceguide (12) is coupled, the tail end of transition waceguide (11) is connected;
Described 3rd coupling transition waceguide (13) is positioned at the bottom of the described second straight-through transition waceguide (6), and is symmetrically distributed in the both sides of the described second straight-through transition waceguide (6) in Z-direction, and is connected with the described second straight-through transition waceguide (6); And the head end and described second of described 3rd coupling transition waceguide (13) is coupled, the tail end of transition waceguide (12) is connected;
Described First Transition waveguide (2) is connected with described public port (1), and the described 4th straight-through transition waceguide (8) is connected with described straight-through port (9); Described 3rd coupling transition waceguide (13) and the described second straight-through transition waceguide (6) are connected with described coupling port (10);
Further, the length of described First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4) projection on Z axis is successively decreased successively relative to the length of described public port (1) projection on Z axis; The length of the described first straight-through transition waceguide (5), the second straight-through transition waceguide (6) projection on Z axis is successively decreased successively relative to the length of described 3rd transition waceguide (4) projection on Z axis; The length of the described 3rd straight-through transition waceguide (7) projection on Z axis is less than the length of the described second straight-through transition waceguide (6) projection on Z axis, the length of the projection on Z axis of the described 4th straight-through transition waceguide (8) is less than or equal to the length of the described 3rd straight-through transition waceguide (7) projection on Z axis, and the length of the described 4th straight-through transition waceguide (8) projection on Z axis is more than or equal to the length of described straight-through port (9) projection on Z axis; Be coupled with first of its both sides total length of transition waceguide (11) projection on Z axis of described 3rd transition waceguide (4) is more than or equal to the length of described coupling port (10) projection on Z axis; Be coupled with second of its both sides total length of transition waceguide (12) projection on Z axis of described first straight-through transition waceguide (5) is more than or equal to the length of described coupling port (10) projection on Z axis; Be coupled with the 3rd of its both sides total length of transition waceguide (13) projection on Z axis of described second straight-through transition waceguide (6) is more than or equal to the length of described coupling port (10) projection on Z axis.
3. broadband orthomode coupler as claimed in claim 2, is characterized in that, described 3rd coupling transition waceguide (13) is formed by connecting by a rectangular waveguide and a triangle waveguide.
4. broadband orthomode coupler as claimed in claim 2, it is characterized in that, described First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4) are rectangular waveguide, and the length of side of described First Transition waveguide (2) is less than the length of side of described public port (1), the length of side of described second transition waceguide (3) is less than the length of side of described First Transition waveguide (2), and the length of side of described 3rd transition waceguide (4) is less than the length of side of described second transition waceguide (3).
5. broadband orthomode coupler as claimed in claim 4, it is characterized in that, the length of the described first straight-through transition waceguide (5) projection in X-axis is equal with the length of described 3rd transition waceguide (4) projection in X-axis, the length of the described second straight-through transition waceguide (6) projection in X-axis is equal with the length of the described first straight-through transition waceguide (5) projection in X-axis, the length of the described 3rd straight-through transition waceguide (7) projection in X-axis is greater than the length of the described second straight-through transition waceguide (6) projection in X-axis, the length of the described 4th straight-through transition waceguide (8) projection in X-axis is greater than the length of the described 3rd straight-through transition waceguide (7) projection in X-axis, the length of the described 4th straight-through transition waceguide (8) projection in X-axis is less than the length of described straight-through port (9) projection in X-axis.
6. the broadband orthomode coupler as described in any one of claim 1 to 5, is characterized in that, described metal-back (100) is provided with a groove (200), for alleviating the weight of broadband orthomode coupler.
7. the broadband orthomode coupler as described in any one of claim 1 to 5, is characterized in that, described metal-back (100) is provided with several installing holes (300).
8. a broadband orthomode coupler, is characterized in that, comprising:
Metal-back (100), described metal-back (100) inside is provided with a chamber, and the head and the tail that described chamber runs through described metal-back (100) are relative to a side of two sides and described metal-back (100);
Be separately positioned on the rectangular waveguide at described chamber head and the tail two ends, the first standard waveguide, and be arranged on the second standard waveguide of side; Wherein, described rectangular waveguide is as the public port (1) of this broadband orthomode coupler, described first standard waveguide is as the straight-through port (9) of this broadband orthomode coupler, and described second standard waveguide is as the coupling port (10) of this broadband orthomode coupler; Between described public port (1) with described straight-through port (9), be disposed with First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4), the first straight-through transition waceguide (5), the second straight-through transition waceguide (6), the 3rd straight-through transition waceguide (7), the 4th straight-through transition waceguide (8), first transition waceguide (11), second transition waceguide (12), the 3rd that is coupled that is coupled is coupled transition waceguide (13); If the Electromagnetic Wave Propagation direction in coupling port (10) is X-axis positive direction, the Electromagnetic Wave Propagation direction in straight-through port (9) is Y-axis positive direction, and the direction perpendicular to the plane at X-direction and Y direction place is Z-direction; Wherein:
Described First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4), the first straight-through transition waceguide (5), the second straight-through transition waceguide (6), the 3rd straight-through transition waceguide (7), the 4th straight-through transition waceguide (8) are connected successively;
Described first coupling transition waceguide (11) is positioned at the bottom of described 3rd transition waceguide (4), and is symmetrically distributed in the both sides of described 3rd transition waceguide (4) in Z-direction, and is connected with described 3rd transition waceguide (4); And the tail end of described first coupling transition waceguide (11) flushes with the tail end of described 3rd transition waceguide (4), the length being shorter in length than described 3rd transition waceguide (4) projection in Y-axis of the projection in Y-axis of described first coupling transition waceguide (11);
Described second coupling transition waceguide (12) is positioned at the bottom of the described first straight-through transition waceguide (5), and is symmetrically distributed in the both sides of the described first straight-through transition waceguide (5) in Z-direction, and is connected with the described first straight-through transition waceguide (5); And the head end and described first of described second coupling transition waceguide (12) is coupled, the tail end of transition waceguide (11) is connected;
Described 3rd coupling transition waceguide (13) is positioned at the bottom of the described second straight-through transition waceguide (6), and is symmetrically distributed in the both sides of the described second straight-through transition waceguide (6) in Z-direction, and is connected with the described second straight-through transition waceguide (6); And the head end and described second of described 3rd coupling transition waceguide (13) is coupled, the tail end of transition waceguide (12) is connected;
Described First Transition waveguide (2) is connected with described public port (1), and the described 4th straight-through transition waceguide (8) is connected with described straight-through port (9); Described 3rd coupling transition waceguide (13) and the described second straight-through transition waceguide (6) are connected with described coupling port (10);
Further, the length of described First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4) projection on Z axis is successively decreased successively relative to the length of described public port (1) projection on Z axis; The length of the described first straight-through transition waceguide (5), the second straight-through transition waceguide (6) projection on Z axis is successively decreased successively relative to the length of described 3rd transition waceguide (4) projection on Z axis; The length of the described 3rd straight-through transition waceguide (7) projection on Z axis is less than or equal to the length of the described second straight-through transition waceguide (6) projection on Z axis, the length of the described 4th straight-through transition waceguide (8) projection on Z axis is less than or equal to the length of the described 3rd straight-through transition waceguide (7) projection on Z axis, and the length of the described 4th straight-through transition waceguide (8) projection on Z axis is more than or equal to the length of described straight-through port (9) projection on Z axis; Be coupled with first of its both sides total length of transition waceguide (11) projection on Z axis of described 3rd transition waceguide (4) is more than or equal to the length of described coupling port (10) projection on Z axis; Be coupled with second of its both sides total length of transition waceguide (12) projection on Z axis of described first straight-through transition waceguide (5) is more than or equal to the length of described coupling port (10) projection on Z axis; Be coupled with the 3rd of its both sides total length of transition waceguide (13) projection on Z axis of described second straight-through transition waceguide (6) is more than or equal to the length of described coupling port (10) projection on Z axis.
9. broadband orthomode coupler as claimed in claim 8, it is characterized in that, described First Transition waveguide (2), the second transition waceguide (3), the 3rd transition waceguide (4) are rectangular waveguide, and the length of side of described First Transition waveguide (2) is less than the length of side of described public port (1), the length of side of described second transition waceguide (3) is less than the length of side of described First Transition waveguide (2), and the length of side of described 3rd transition waceguide (4) is less than the length of side of described second transition waceguide (3).
10. broadband orthomode coupler as claimed in claim 9, it is characterized in that, the length of the described first straight-through transition waceguide (5) projection in X-axis is equal with the length of described 3rd transition waceguide (4) projection in X-axis, the length of the described second straight-through transition waceguide (6) projection in X-axis is equal with the length of the described first straight-through transition waceguide (5) projection in X-axis, the length of the described 3rd straight-through transition waceguide (7) projection in X-axis is greater than the length of the described second straight-through transition waceguide (6) projection in X-axis, the length of the described 4th straight-through transition waceguide (8) projection in X-axis is greater than the length of the described 3rd straight-through transition waceguide (7) projection in X-axis, the length of the described 4th straight-through transition waceguide (8) projection in X-axis is less than the length of described straight-through port (9) projection in X-axis.
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| CN112510337A (en) * | 2020-11-27 | 2021-03-16 | 江苏亨通太赫兹技术有限公司 | Cross coupler based on mode synthesis, construction method and impedance matching structure |
| CN114335963A (en) * | 2022-03-10 | 2022-04-12 | 广州中雷电科科技有限公司 | Orthogonal mode coupler and design method |
| CN115863948A (en) * | 2022-09-20 | 2023-03-28 | 北京星英联微波科技有限责任公司 | Compact type coupler |
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