CN211670303U

CN211670303U - Ultra-wideband ridge orthogonal mode coupler (OMT)

Info

Publication number: CN211670303U
Application number: CN202020594305.0U
Authority: CN
Inventors: 胡南; 谢文青; 刘建睿; 刘爽; 吴永乐; 王卫民; 冉桔庆
Original assignee: Beijing Xingyinglian Microwave Technology Co ltd
Current assignee: Beijing Xingyinglian Microwave Technology Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-10-13
Anticipated expiration: 2030-04-20

Abstract

The utility model provides an ultra wide band adds spine orthomode coupler (OMT), this ultra wide band adds spine orthomode coupler (OMT) inside is equipped with mode separation cavity, combine the way cavity, and match the cavity, mode separation cavity is used for separating into TE01 mould and TE10 mould with the wave that the public port transmitted, it is connected with two side openings of mode separation cavity to combine the way with the TE01 mould that two side openings transmitted, and export from standard rectangle mouth, match the cavity and be connected with the straight mouth of mode separation cavity, be used for transiting to standard rectangle mouth output with the smoothness of the TE10 mould that straight mouth transmitted; wherein, four ridges are arranged on the ultra-wideband ridge orthogonal mode coupler (OMT). Through the technical scheme provided by the utility model, can solve the problem that prior art can't satisfy the new demand of 5G test.

Description

Ultra-wideband ridge orthogonal mode coupler (OMT)

Technical Field

The utility model relates to a broadband technical field particularly, relates to an ultra wide band adds spine orthomode coupler (OMT).

Background

The fifth generation cellular mobile communication system is characterized by high speed, low delay and dense connection. Compared with the prior communication systems, the frequency used by the 5G communication system is obviously improved. The 1.13 topic is newly established in the research period of world radio communication society in 2019, an available frequency band is searched above 6GHz, and the research frequency range is 24.25-86 GHz.

That is, the following new requirements are created for the 5G test: 1. a series of antennas suitable for each test method is required; 2. the frequency band of 5G millimeter waves is required to be covered by 24-50 GHz and 22.5-45 GHz; 3. dual linear polarization, high cross polarization 45dB, high port isolation 40dB is required.

Similarly, for the new requirements of the above 5G test, the existing product has the following bottlenecks: 1. the frequency band is not tested for 5G millimeter waves; 2. no standard waveguide covers the 5G millimeter wave frequency band; 3. the existing dual linear polarization is specifically cross polarization of 30dB, and the port isolation is 20 dB; 4. because the frequency spans an octave (2)¹) And multiple octaves (2)ⁿ，n>1) At present, mode separation, high isolation and high polarization purity are difficult to realize in the frequency range.

The object is not solved yet by the above technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ultra wide band adds spine orthomode coupler (OMT) to solve the problem that prior art can't satisfy the new demand of 5G test.

In order to solve the above problem, according to an aspect of the present invention, the present invention provides an ultra-wideband ridge orthogonal mode coupler (OMT), wherein a mode separation cavity, a combination cavity and a matching cavity are arranged inside the ultra-wideband ridge orthogonal mode coupler (OMT), the mode separation cavity is used for separating the wave transmitted by a common port into a TE01 mode and a TE10 mode, the combination cavity is connected with two side ports of the mode separation cavity, and is used for combining the TE01 modes transmitted by two side ports into one path and outputting the combined wave from a standard rectangular port, and the matching cavity is connected with a straight port of the mode separation cavity and is used for smoothly transitioning the TE10 mode transmitted by the straight port to a standard rectangular port for outputting; the ultra-wideband ridge-adding orthogonal mode coupler (OMT) is provided with four ridges which are a first ridge, a second ridge, a third ridge and a fourth ridge respectively; the first ridge and the second ridge are positioned on the first side surface and the second side surface which are oppositely arranged on the mode separation cavity and extend to the combining cavity; the third ridge and the fourth ridge are located on a third side and a fourth side of the mode separation chamber that are oppositely disposed.

Optionally, the first ends of the first ridge, the second ridge, the third ridge and the fourth ridge are on the top surface penetrating the ultra-wideband-ridge orthogonal mode coupler (OMT).

Optionally, the second end of the first ridge and the second end of the second ridge smoothly transition into a planar state in the combining cavity.

Optionally, when the second end of the first ridge and the second end of the second ridge smoothly transition to the planar state in the combining cavity, the ridge heights of the first ridge and the second ridge gradually decrease until the first ridge and the second ridge transition to the planar state.

Optionally, the combining cavity includes a combining cavity, a first converting cavity and a second converting cavity, a first end of the first converting cavity and a first end of the second converting cavity are respectively connected to the two side ports of the mode separating cavity, a second end of the first converting cavity and a second end of the second converting cavity are both connected to the combining cavity, where the first converting cavity and the second converting cavity are used to convert a single ridge waveguide into a rectangular waveguide; the combining cavity is used for combining the two paths of rectangular waveguides into one path of rectangular waveguide.

Optionally, in a direction from the first end to the second end of the first conversion chamber, the first conversion chamber is widened from a first preset position, wherein the widened processing is to widen a width of a surface of the first conversion chamber provided with a ridge; and in the direction from the first end to the second end of the second conversion cavity, widening the second conversion cavity from a second preset position, wherein the widening is to widen the width of the surface of the second conversion cavity provided with the ridge.

Optionally, in a direction from a first end to a second end of the third ridge and the fourth ridge, ridge heights of the third ridge and the fourth ridge gradually increase from a third preset position until a distance between the third ridge and the fourth ridge becomes a first threshold, where the first threshold is a cross-sectional width of a through opening of the mode separation chamber.

Optionally, in a direction from a first end to a second end of the third ridge and the fourth ridge, ridge widths of the third ridge and the fourth ridge gradually decrease from a fourth preset position until the ridge width of the third ridge becomes the second threshold, and the ridge width of the fourth ridge becomes the second threshold.

Optionally, after the distance between the third ridge and the fourth ridge becomes the first threshold, the mode separation cavity starts to form two side ports.

Optionally, after a distance between the third ridge and the fourth ridge becomes a first threshold, ridge sidewalls of the third ridge gradually separate at a preset angle until the distance between the ridge sidewalls of the third ridge becomes a third threshold; and the ridge sidewalls of the fourth ridge are gradually separated by a preset angle until the distance between the ridge sidewalls of the fourth ridge becomes a third threshold; and after the distance between the ridge side walls of the third ridge becomes a third threshold value and the distance between the ridge side walls of the fourth ridge becomes a third threshold value, the two ridge side walls of the third ridge and the two ridge side walls of the fourth ridge are combined in pairs and are changed into the side walls of the two side ports of the mode separation cavity.

Optionally, the preset angle is 45 °.

Optionally, after a distance between the third ridge and the fourth ridge becomes a first threshold, the first side surface and the second side surface of the mode separation cavity are right-angled and turned to be changed into the side walls of the two side openings of the mode separation cavity, wherein the longitudinal sections of the first side surface and the second side surface are L-shaped.

Optionally, the matching cavity smoothly transitions the straight opening of the mode separation cavity to a standard rectangular opening based on a stepped structure, wherein a width dimension of each step in the stepped structure satisfies chebyshev anti-impedance transformation.

Optionally, the matching cavity is right-angled at a first position, and a step structure is arranged outside the turning position, wherein the step structure is arranged along the width direction of the turning.

Optionally, the cross-sectional dimensions of four ridges disposed on the ultra-wideband-ridge orthogonal mode coupler (OMT) satisfy the following formula:

in the formula, a1 is the length of the long side of the public port; a2 is ridge width; b1 is the length of the public port wide side; b2 is ridge spacing; u is relative magnetic permeability; is a relative dielectric constant; fc is the cut-off frequency; cf is the fringe capacitance.

In order to solve the above problem, according to the utility model discloses an aspect, the utility model provides an ultra wide band adds spine orthomode coupler (OMT), this ultra wide band adds spine orthomode coupler (OMT) model includes a plurality of subassemblies, wherein, form above-mentioned arbitrary mode separation cavity after a plurality of subassemblies stack, combine the cavity, match the cavity.

Optionally, the ultra-wideband-ridge orthogonal mode coupler (OMT) is provided with a first ridge and a second ridge, where the first ridge is any one of the first ridges and the second ridge is any one of the second ridges, and the first ridge is completely disposed on one component, and the second ridge is also completely disposed on one component.

Optionally, a third ridge and a fourth ridge are arranged on the ultra-wideband-ridge orthogonal mode coupler (OMT), the third ridge is any one of the third ridges, and the fourth ridge is any one of the fourth ridges, wherein the third ridge is completely arranged on one component, and the fourth ridge is also completely arranged on one component.

Optionally, the ultra-wideband-ridged orthogonal mode coupler (OMT) includes at least three groups of components, and the three groups of components are sequentially stacked to form the mode separation cavity, the combining cavity, and the matching cavity of any one of claims 1 to 15, wherein the first ridge and the second ridge are completely disposed in a target group of components, the target group of components is a group of components located at a middle position after the three groups of components are sequentially stacked, and the target group of components includes at least two components.

Optionally, the target group of components includes a first component and a second component, and the first component and the second component are arranged side by side, wherein the first ridge is arranged on the first component, and the second ridge is arranged on the second component.

In the application, the ultra-wideband ridge orthogonal mode coupler (OMT) widens the bandwidth through a four-ridge structure, and solves the technical problems that the existing product does not aim at a 5G millimeter wave test frequency band and does not cover the 5G millimeter wave frequency band by a standard waveguide, the existing dual-linear polarization is specifically cross polarization 30dB, and a port is isolated by 20 dB. That is, the ultra-wideband-ridged orthogonal mode coupler (OMT) in the present application achieves the technical effects of a wider operating bandwidth, higher port isolation and cross-polarization isolation with respect to existing products.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an internal cavity of an ultra-wideband-ridged orthogonal-mode coupler (OMT) provided by the present invention;

FIG. 2 shows a schematic diagram of a mode splitting cavity of the ultra-wideband-ridged orthogonal-mode coupler (OMT) of FIG. 1;

fig. 3 shows a schematic structural diagram of a combining cavity of an ultra-wideband-ridged orthogonal-mode coupler (OMT) in fig. 1;

FIG. 4 shows a schematic diagram of a matching cavity of the ultra-wideband-ridged orthogonal-mode coupler (OMT) of FIG. 1;

FIG. 5 shows a front perspective view of the ultra-wideband-ridged orthogonal mode coupler (OMT) of FIG. 1;

FIG. 6 shows a side perspective view of the ultra-wideband-ridged orthogonal-mode coupler (OMT) of FIG. 1;

FIG. 7 shows a perspective view of the ultra-wideband-ridged orthogonal-mode coupler (OMT) of FIG. 1;

FIG. 8 shows a schematic diagram of the size notation of the common port of the ultra-wideband-ridged orthogonal-mode coupler (OMT) of FIG. 1;

fig. 9 is a schematic diagram showing a disassembled structure of an ultra-wideband ridge orthogonal mode coupler (OMT);

fig. 10 shows a schematic diagram of a disassembled structure of an ultra-wideband ridge orthogonal mode coupler (OMT) according to the present invention;

fig. 11 shows a third schematic diagram of a disassembled structure of an ultra-wideband ridge orthogonal mode coupler (OMT) provided by the present invention;

fig. 12 shows a schematic structural diagram of a target group of components (40) in an ultra-wideband-ridged orthogonal-mode coupler (OMT) system provided by the present invention;

fig. 13 is a schematic diagram illustrating a first group of components in an ultra-wideband-ridged orthogonal-mode coupler (OMT) system provided by the present invention;

fig. 14 shows a schematic structural diagram of components of a second group in an ultra-wideband-ridged orthogonal-mode coupler (OMT) system provided by the present invention.

Wherein the figures include the following reference numerals:

11. a side port; 12. a straight port; 13. a first ridge; 14. a second ridge; 15. a third ridge; 16. a fourth ridge; 21. a combining cavity; 22. a first conversion chamber; 23. a second switching chamber; 31. a step structure; 40. a target group of components; 41. a first component; 42. a second component; a. a first preset position; b. a second preset position; c. a third preset position; d. a fourth preset position.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the embodiment of the present invention provides an ultra-wideband ridge orthogonal mode coupler (OMT) (orthogonal mode coupler), which is internally provided with a mode separation cavity, a combination cavity and a matching cavity, wherein the mode separation cavity is used for separating the wave transmitted by a common port into a TE01 mode and a TE10 mode, the combination cavity is connected with two side ports of the mode separation cavity, and is used for combining the TE01 modes transmitted by the two side ports into one path and outputting from a standard rectangular port, the matching cavity is connected with a straight port of the mode separation cavity, and is used for smoothly transitioning the TE10 mode transmitted by the straight port into the standard rectangular port for outputting.

It should be noted that: in order to clearly describe the internal cavity structure of the ultra-wideband-ridged orthogonal mode coupler (OMT), the internal cavity of the ultra-wideband-ridged orthogonal mode coupler (OMT) is divided into a mode separation cavity, a combining cavity and a matching cavity. That is, the specific dividing manner of the internal cavity of the ultra-wideband-ridged orthogonal mode coupler (OMT) is not specifically limited in the present application.

The ultra-wideband ridge orthogonal mode coupler (OMT) of the present application may be as shown in fig. 1, the mode separation cavity may be as shown in fig. 2, the combining cavity may be as shown in fig. 3, and the matching cavity may be as shown in fig. 4. It should be noted that: fig. 1-4 are internal cavity models of an ultra-wideband-ridged orthogonal mode coupler (OMT), rather than an ultra-wideband-ridged orthogonal mode coupler (OMT) solid model.

It should be noted that: the ultra-wideband ridged orthogonal mode coupler (OMT) is connected with the outside, and three ports are involved, namely a public port (transmitting TE01 mode and TE10 mode), a standard rectangular port (transmitting TE01 mode) and a standard rectangular port (transmitting TE10 mode).

For the above three ports, the following are exemplified: the ultra-wideband ridge orthogonal mode coupler (OMT) receives electromagnetic waves from a common port, and the electromagnetic waves are separated into a TE01 mode and a TE10 mode based on a cavity structure of a mode separation cavity, wherein the TE01 mode is transmitted to a combining cavity from two side ports of the mode separation cavity, is combined into a path based on the cavity structure of the combining cavity, and is output from a standard rectangular port of the combining cavity; the TE10 mode is transmitted from the straight port of the mode separation cavity to the matching cavity and out the standard rectangular port of the matching cavity.

For the above three ports, the following are exemplified: the ultra-wideband ridge orthogonal mode coupler (OMT) receives a TE01 mode from a standard rectangular port of a combining cavity, and divides the TE01 mode into two paths to be transmitted to two side ports of a model separation cavity; the ultra-wideband ridge orthogonal mode coupler (OMT) receives a TE10 mode from a standard rectangular port of a matching cavity and transmits the TE10 mode to a straight cylinder port of a model separation cavity; at the moment, the mold separation cavity receives TE01 molds from two side ports and receives TE10 molds from a straight port, and then the mold separation cavity combines the received TE01 molds and the TE10 molds into a whole and outputs the whole from a common port.

The public port can be a square four-ridge waveguide port with the side length of 5.9mm and can be connected with a radiation antenna; the standard rectangular port can be a BJ320 standard rectangular port and can be connected with the waveguide coaxial converter; the straight opening may be a 6.6mm by 2.1mm rectangular waveguide; the side port may be a single ridge waveguide port of 5.9mm by 1.56 mm.

In an alternative embodiment, four ridges, namely a first ridge, a second ridge, a third ridge and a fourth ridge, are arranged on the ultra-wideband-ridge orthogonal mode coupler (OMT); the first ridge and the second ridge are positioned on the first side surface and the second side surface which are oppositely arranged on the mode separation cavity and extend to the combining cavity; the third ridge and the fourth ridge are located on a third side and a fourth side of the mode separation chamber that are oppositely disposed.

That is, in the application, the ultra-wideband ridge orthogonal mode coupler (OMT) widens the bandwidth through a four-ridge structure, and solves the technical problems that the existing product does not aim at a 5G millimeter wave test frequency band and does not have a standard waveguide to cover the 5G millimeter wave frequency band, the existing dual-linear polarization is specifically cross polarization 30dB, and a port is isolated by 20 dB. That is, the ultra-wideband-ridged orthogonal mode coupler (OMT) in the present application achieves the technical effects of a wider operating bandwidth, higher port isolation and cross-polarization isolation with respect to existing products.

In an alternative example, first ends of the first, second, third and fourth ridges are on top of the ultra-wideband-ridge orthogonal mode coupler (OMT). That is, as shown in fig. 1 and 2, the cavity side of the mode splitting cavity is all designed as a ridge waveguide, and the common port is also a four-ridge port.

It should be noted that: the prior art does not have four spine ports, the technical characteristics of the four spine ports are that no precedent is made in the technical history, and the technical characteristics achieve the following technical effects: the ultra-wideband ridged orthogonal mode coupler (OMT) achieves wider working bandwidth compared with the existing product.

In an optional example, the second end of the first ridge and the second end of the second ridge smoothly transition to a planar state at the combining cavity. That is, as shown in fig. 1, 2 and 3, the first ridge and the second ridge extend from the first side surface and the second side surface of the mode separating cavity to the Y-shaped combining cavity, respectively, and the second ends of the first ridge and the second ridge gradually transition to a planar state on the combining cavity.

Specifically, the first ridge and the second ridge gradually decrease the ridge height to achieve the technical effect of gradually transitioning to a planar state on the combining cavity. That is, when the second end of the first ridge and the second end of the second ridge smoothly transition to the planar state in the combining cavity, the ridge heights of the first ridge and the second ridge gradually decrease until the first ridge and the second ridge transition to the planar state.

In an optional example, the combining cavity includes a combining cavity, a first converting cavity and a second converting cavity, a first end of the first converting cavity and a first end of the second converting cavity are respectively connected to the two side ports of the mode separating cavity, and a second end of the first converting cavity and a second end of the second converting cavity are both connected to the combining cavity, wherein the first converting cavity and the second converting cavity are used for converting the single-ridge waveguide into the rectangular waveguide; the combining cavity is used for combining the two paths of rectangular waveguides into one path of rectangular waveguide.

That is, the first ridge and the second ridge are partially transited to a planar state in the first conversion cavity and the second conversion cavity of the combining cavity, and at this time, the first conversion cavity and the second conversion cavity are converted into rectangular waveguides from single ridge waveguides, so that two paths of successfully converted rectangular waveguides are combined.

In an optional example, the first conversion chamber is widened from a first preset position in a direction from a first end to a second end of the first conversion chamber, wherein the widening is to widen a width of a surface of the first conversion chamber provided with a ridge; and in the direction from the first end to the second end of the second conversion cavity, widening the second conversion cavity from a second preset position, wherein the widening is to widen the width of the surface of the second conversion cavity provided with the ridge.

That is, as shown in fig. 1 and 3, assuming that the surface of the first combining cavity where the first ridge is provided is the a surface, the a surface is widened from the first preset position in the direction from the first end to the second end of the first conversion cavity at this time.

It should be noted that: the first preset position is an initial position at which the first ridge starts to transition into a planar state; the second preset position is an initial position at which the second ridge starts to transition into a planar state; or, the first preset position is located at the vertical part of the first conversion cavity; the second preset position is located in a vertical portion of the second conversion cavity.

In an optional example, the combining cavity is T-shaped, and a V-shaped ridge is arranged at a node of the T-shaped ridge, and the V-shaped ridge is arranged along the depth direction to form a V-shaped gap of the combining cavity, wherein the ridge surface angle of the V-shaped ridge is 45 °. As shown in particular in fig. 1 and 3. In addition, fig. 5 is a front perspective view of an ultra-wideband-ridged orthogonal mode coupler (OMT), fig. 6 is a side perspective view of the ultra-wideband-ridged orthogonal mode coupler (OMT), fig. 7 is a perspective view of the ultra-wideband-ridged orthogonal mode coupler (OMT), and fig. 5, 6, and 7 respectively show a V-shaped ridge arranged in the depth direction and a V-shaped notch of a combining cavity formed at a T-shaped node.

In an alternative example, in a direction from a first end to a second end of the third ridge and the fourth ridge, ridge heights of the third ridge and the fourth ridge gradually increase from a third preset position until a distance between the third ridge and the fourth ridge becomes a first threshold value, wherein the first threshold value is a cross-sectional width of a through opening of the mode separation chamber.

That is, as shown in fig. 1 and 2, the third ridge and the fourth ridge penetrate the second surface and the third surface of the mode separating cavity, and gradually increase the ridge height from the third preset position, so that the straight opening with the length greater than the width is naturally formed after the two side openings are separated from the mode separating cavity. Fig. 5 is a side perspective view of an ultra-wideband-ridged orthogonal mode coupler (OMT), specifically, as shown in fig. 5, a third ridge and a fourth ridge gradually increase ridge height from a third preset position, so as to gradually compress the width dimension of the straight port structurally, and thus, two modes of the common port are separated at the junction of the side port and the straight port.

In an optional example, in a direction from a first end to a second end of the third ridge and the fourth ridge, ridge widths of the third ridge and the fourth ridge gradually decrease from a fourth preset position until the ridge width of the third ridge becomes a second threshold, and the ridge width of the fourth ridge becomes a second threshold, where the second threshold is related to a frequency band corresponding to an ultra-wideband-ridged orthogonal mode coupler (OMT), for example: the second threshold is larger for higher frequencies of the ultra-wideband-ridged orthogonal-mode coupler (OMT).

It should be noted that: the third preset position and the fourth preset position may be the same position. That is, as shown in fig. 1 and 2, as the third ridge and the fourth ridge start to gradually increase the ridge height, the third ridge and the fourth ridge also start to gradually decrease the ridge width at the same time. Further, fig. 5 is a front perspective view of an ultra-wideband-ridged orthogonal mode coupler (OMT), fig. 6 is a side perspective view of the ultra-wideband-ridged orthogonal mode coupler (OMT), fig. 7 is a perspective view of the ultra-wideband-ridged orthogonal mode coupler (OMT), and it can be seen from fig. 5, fig. 6 and fig. 7 that the third ridge and the fourth ridge gradually increase the ridge height and decrease the ridge width from the third preset position/the fourth preset position.

It should also be noted that: the ridge width and the ridge height of the third ridge and the fourth ridge simultaneously satisfy the preset conditions, and the decrease increase processing is stopped. As shown in fig. 5, 6 and 7 in particular, the third ridge and the fourth ridge gradually increase the ridge height and gradually decrease the ridge width from the third preset position; furthermore, the ridge heights of the third ridge and the fourth ridge gradually meet the preset condition and are not increased, and the ridge widths of the third ridge and the fourth ridge gradually meet the preset condition and are not decreased; at this time, the ridge width and the ridge height of the third ridge and the fourth ridge are at the same position while satisfying the preset condition and do not change.

In an alternative embodiment, the mode separation cavity starts to form two side ports after the distance between the third ridge and the fourth ridge becomes the first threshold.

Specifically, after the distance between the third ridge and the fourth ridge becomes a first threshold, ridge sidewalls of the third ridge gradually separate at a preset angle until the distance between the ridge sidewalls of the third ridge becomes a third threshold; and the ridge sidewalls of the fourth ridge are gradually separated by a preset angle until the distance between the ridge sidewalls of the fourth ridge becomes a third threshold; after the distance between the ridge side walls of the third ridge becomes a third threshold value and the distance between the ridge side walls of the fourth ridge becomes a third threshold value, the two ridge side walls of the third ridge and the two ridge side walls of the fourth ridge are combined in pairs and are changed into the side walls of the two side ports of the mode separation cavity; and the preset angle is 45 deg..

That is, as shown in fig. 1, 2 and 5, the ridge sidewall of the third ridge is gradually separated until being transformed into partial sidewalls of the two side ports of the mode separating chamber, and the ridge sidewall of the fourth ridge is gradually separated until being transformed into partial sidewalls of the two side ports of the mode separating chamber. The ridge side walls of the third ridge are respectively a first ridge side wall and a second ridge side wall, the ridge side walls of the fourth ridge are respectively a third ridge side wall and a fourth ridge side wall, and the first ridge side wall and the third ridge side wall are combined together from the side face of the straight cylinder opening to form a side wall of a side opening; the second ridge sidewall and the fourth ridge sidewall join together starting from the straight opening side to form the other side opening sidewall.

It should be noted that: the ridge lateral wall of third spine separates gradually with predetermineeing the angle in this application, and the ridge lateral wall of fourth spine separates gradually with predetermineeing the angle, and predetermines the angle and be 45 degrees. That is, the ridge sidewalls are linear transition separated, not curvilinear transition separated, and the angle of the linear transition separation is 45 °. It is worth noting that: the technical characteristics do not exist in the prior art, namely the technical characteristics are not precedent in the technical history. The technical characteristics achieve the following technical effects: the ultra-wideband ridged orthogonal mode coupler (OMT) achieves wider working bandwidth compared with the existing product.

It should also be noted that: in this application the two ridge sidewalls of the third ridge and the two ridge sidewalls of the fourth ridge are that after the distance between the ridge sidewalls of the third ridge becomes the third threshold, and the distance between the ridge sidewalls of the fourth ridge becomes the third threshold, two-by-two combination is started and the two-by-two combination is changed into the sidewalls of the two side ports of the mode separation chamber. That is, in an alternative example, the two ridge sidewalls of the third ridge and the two ridge sidewalls of the fourth ridge may be sidewalls of two side ports of the pattern separation chamber, which are combined with each other only after a preset length after a distance between the ridge sidewalls of the third ridge and a distance between the ridge sidewalls of the fourth ridge become a third threshold. In another alternative example, the two ridge sidewalls of the third ridge and the two ridge sidewalls of the fourth ridge may start to be combined two by two and change into the sidewalls of the two side ports of the mode separation chamber immediately after the distance between the ridge sidewalls of the third ridge becomes the third threshold and the distance between the ridge sidewalls of the fourth ridge becomes the third threshold.

Specifically, after the distance between the third ridge and the fourth ridge becomes the first threshold, the first side surface and the second side surface of the mode separation cavity are right-angled and turned so as to be changed into the side walls of the two side ports of the mode separation cavity. That is, the longitudinal cross-sections of the first side and said second side are L-shaped as shown in fig. 5.

It should be noted that: in this application, the first side and the second side of the mode separation cavity start the right angle turning only after the distance between the third ridge and the fourth ridge becomes the first threshold, wherein the first side and the second side of the mode separation cavity may start the right angle turning only after a preset length is passed, so that the width and the length of the cross section of the side opening after the turning satisfy a second preset condition, for example: the converted side cross-section had a width and length of 1.56mm and a length of 5.9 mm.

In an alternative example, the matching cavity smoothes the straight opening of the mode separation cavity to a standard rectangular opening based on a stepped structure, wherein a broadside dimension of each step in the stepped structure satisfies chebyshev anti-impedance transformation. In addition, the matching cavity is right-angled at the first position, and a transversely arranged step structure is arranged outside the turning position, wherein the step structure is arranged along the width direction of the turning, that is, the step structure makes the matching cavity realize step turning at the first position as shown in fig. 4.

It should be noted that: the matching cavity is right-angled at a first position, and a transversely arranged step structure is arranged outside the turning position, as shown in fig. 4 and 6. The technical characteristic achieves the technical effect of increasing the bandwidth of an ultra-wideband and ridge orthogonal mode coupler (OMT).

Further, it should be noted that: the cross-sectional dimension of four ridges arranged on the ultra-wideband ridge-adding orthogonal mode coupler (OMT) satisfies the following formula:

in the formula, a₁The length of the long edge of the public port is the length of the long edge; a is₂Is the ridge width; b₁The length of the wide side of the public port; b₂Is the ridge spacing; u is relative magnetic permeability; is a relative dielectric constant; f. of_cIs the cut-off frequency; c_fIs a fringe capacitance; as shown in particular in fig. 8.

That is, the ultra-wideband-ridged orthogonal mode coupler (OMT) (orthogonal mode coupler) described in the present application can calculate the cut-off frequencies of the four-ridge waveguides of different sizes by the above formula.

To sum up, the utility model adopts 4-ridge structure for the common port in the orthogonal mode coupler, and adopts the design of all ridge waveguides at the mode separation position; further, the double-ridge waveguide is transited to the non-standard rectangular waveguide near the straight port, and the non-standard rectangular waveguide is transited to the international rectangular waveguide through step impedance matching; the two branch side ports are transited from the single ridge waveguide to the non-standard rectangular waveguide. The four-ridge structure achieves wider working bandwidth and higher port isolation; the multi-octave is realized, the impedance matching is good, the isolation and the polarization purity are improved, and the processing difficulty is reduced.

The present application further provides another optional embodiment, where the implementation describes an ultra-wideband-ridged orthogonal mode coupler (OMT), where the ultra-wideband-ridged orthogonal mode coupler (OMT) model includes a plurality of components, where the plurality of components are sequentially stacked to form the above-mentioned mode separation cavity, combining cavity, and matching cavity.

In an optional example, the ultra-wideband-ridge orthogonal mode coupler (OMT) is provided with a first ridge and a second ridge, where the first ridge is the first ridge mentioned in any example or embodiment, and the second ridge is the second ridge mentioned in any example or embodiment. If necessary, the following are stated: in the example, the first ridge is arranged completely on one component, and the second ridge is also arranged completely on one component.

That is, in this example, the first ridge and the second ridge may be integrally provided on a certain component, rather than being formed by splicing a plurality of components. It should be noted that: the first ridge and the second ridge may be integrally disposed on the same component, or may be integrally disposed on different components, which is not specifically limited in this application.

In an optional example, the ultra-wideband-ridge orthogonal mode coupler (OMT) is provided with a third ridge and a fourth ridge, where the third ridge is the third ridge mentioned in any of the above examples or embodiments, and the fourth ridge is the fourth ridge mentioned in any of the above examples or embodiments. If necessary, the following are stated: in the example, the third ridge is arranged completely on one component, and the fourth ridge is also arranged completely on one component.

That is, in this example, the third ridge and the fourth ridge may be integrally provided on a certain component, rather than being formed by splicing a plurality of components. It should be noted that: the third ridge and the fourth ridge may be integrally disposed on the same component, or may be integrally disposed on different components, which is not specifically limited in this application.

For example, the following steps are carried out: as shown in fig. 9 and 10, an ultra-wideband-ridged orthogonal mode coupler (OMT) is provided with three groups of components, and the three groups of components are sequentially stacked to form a mode separation cavity, a combining cavity, and a matching cavity, wherein a first ridge and a second ridge are completely arranged on the components of a target group, and the components of the target group are positioned in the middle of the components of the target group after the three groups of components are sequentially stacked. And this mode of setting up has avoided the combination gap between the subassembly to set up on the ridge roof beam, and leads to the unable sealed condition emergence of merging of gap on the ridge roof beam effectively. As shown in fig. 11, if the combined gap between the components is formed in the ridge beam, based on the internal cavity structure of the ultra-wideband-ridged orthogonal mode coupler (OMT), the ridge beam cannot be provided with a screw fastening component, so that the gap in the ridge beam cannot be effectively combined and sealed, and the reduction of the working stability of the ultra-wideband-ridged orthogonal mode coupler (OMT) is further affected.

It should be noted that: the target set of components may be two, for example: the target set of components includes a first component and a second component arranged side-by-side, wherein a first ridge is disposed on the first component and a second ridge is disposed on the second component, as shown in particular in fig. 12. In addition, the width of the target group of components in the stacking direction may be the ridge height, the width of the first side face/the second side face, or any value between the ridge height value and the width value of the first side face/the second side face, which is not specifically limited in the present application.

When needing to be explained: the three groups of components include, in addition to the target group of components: and a plurality of screw fastening parts are correspondingly arranged on the target group assembly, the first group assembly and the second group assembly, as shown in fig. 12, 13 and 14. The plurality of screw fastening parts are used for closely overlapping and connecting the components of the first group, the components of the second group and the components of the target group, and the situation that the working stability of an ultra-wideband ridge orthogonal mode coupler (OMT) is affected due to the fact that gaps appear in a cavity is avoided.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Claims

1. An ultra-wideband ridge orthogonal mode coupler (OMT) is characterized in that a mode separation cavity, a combining cavity and a matching cavity are arranged inside the OMT, the mode separation cavity is used for separating waves transmitted by a common port into TE01 modes and TE10 modes, the combining cavity is connected with two side ports (11) of the mode separation cavity and used for combining the TE01 modes transmitted by the two side ports (11) into one path and outputting the combined TE01 mode from a standard rectangular port, and the matching cavity is connected with a straight port (12) of the mode separation cavity and used for smoothly transitioning the TE10 mode transmitted by the straight port (12) to the standard rectangular port for outputting;

the ultra-wideband ridge-adding orthogonal mode coupler is provided with four ridges, namely a first ridge (13), a second ridge (14), a third ridge (15) and a fourth ridge (16); the first ridge (13) and the second ridge (14) are positioned on a first side surface and a second side surface which are oppositely arranged on the mode separation cavity and extend to the combining cavity; the third ridge (15) and the fourth ridge (16) are located on a third side and a fourth side of the pattern separation chamber that are oppositely arranged.

2. The OMT according to claim 1, wherein the first ends of the first (13), second (14), third (15) and fourth (16) ridges are through the top surface of the OMT.

3. The OMT of claim 2, wherein the second ends of the first and second ridges (13, 14) transition smoothly into a planar state in the combining cavity.

4. The OMT according to claim 3, wherein in case the second ends of the first and second ridges (13, 14) transition smoothly into a planar state in the combining cavity, the ridge heights of the first and second ridges (13, 14) decrease gradually until transitioning into a planar state.

5. The OMT of claim 1, wherein the combining cavity comprises a combining cavity (21), a first transforming cavity (22) and a second transforming cavity (23), a first end of the first transforming cavity (22) and a first end of the second transforming cavity (23) are respectively connected to the two side ports (11) of the mode splitting cavity, a second end of the first transforming cavity (22) and a second end of the second transforming cavity (23) are both connected to the combining cavity (21), wherein the first transforming cavity (22) and the second transforming cavity (23) are used for transforming a single ridge waveguide to a rectangular waveguide; the combining cavity (21) is used for combining the two paths of rectangular waveguides into one path of rectangular waveguide.

6. The OMT according to claim 5, wherein said first switching chamber (22) is widened from a first predetermined position (a) in a direction from a first end to a second end of said first switching chamber (22), wherein said widening is a widening of a width of a surface of said first switching chamber (22) provided with a ridge; the second conversion chamber (23) is subjected to widening from a second preset position (b) in a direction from a first end to a second end of the second conversion chamber (23), wherein the widening is to widen a width of a surface of the second conversion chamber (23) provided with ridges.

7. The OMT according to claim 2, characterised in that said third (15) and fourth (16) ridges have a ridge height which increases gradually from a third preset position (c) in the direction from the first end to the second end of said ridges until the distance between said ridges (15, 16) becomes a first threshold value, wherein said first threshold value is the cross-sectional width of the through opening (12) of the mode separation cavity.

8. The UWB-ridged orthogonal mode coupler (OMT) according to claim 2, characterized in that the third ridge (15) and the fourth ridge (16) have ridge widths that gradually decrease from a fourth preset position (d) in a direction from a first end to a second end of the third ridge (15) and the fourth ridge (16) until the ridge width of the third ridge (15) becomes a second threshold and the ridge width of the fourth ridge (16) becomes a second threshold.

9. The OMT according to claim 7 or 8, wherein the mode-splitting cavity starts to form two side ports (11) since the distance between the third ridge (15) and the fourth ridge (16) becomes the first threshold.

10. The OMT according to claim 9, wherein the ridge sidewalls of the third ridge (15) gradually separate at a predetermined angle until the distance between the ridge sidewalls of the third ridge (15) becomes a third threshold value after the distance between the third ridge (15) and the fourth ridge (16) becomes the first threshold value; and the ridge sidewalls of the fourth ridge (16) are gradually separated at a preset angle until the distance between the ridge sidewalls of the fourth ridge (16) becomes a third threshold value; and after the distance between the ridge side walls of the third ridge (15) becomes a third threshold value and the distance between the ridge side walls of the fourth ridge (16) becomes a third threshold value, the two ridge side walls of the third ridge (15) and the two ridge side walls of the fourth ridge (16) are combined in pairs and are converted into the side walls of the two side ports (11) of the mode separation cavity.

11. The ultra-wideband-ridged orthogonal-mode coupler (OMT) according to claim 10, characterized in that said preset angle is 45 °.

12. The OMT according to claim 9, wherein the first and second sides of the mode separation cavity are right angle turned after the distance between the third ridge (15) and the fourth ridge (16) has changed to a first threshold value to transition to the side walls of the two side ports (11) of the mode separation cavity, wherein the longitudinal cross section of the first and second sides is L-shaped.

13. The OMT of claim 1, wherein the matching cavity smoothes the straight opening (12) of the mode splitting cavity to a standard rectangular opening based on a stepped structure, wherein a broadside dimension of each step in the stepped structure satisfies Chebyshev anti-impedance transformation.

14. The OMT according to claim 13, wherein the matching cavity is right angle turned at a first position and a step structure (31) is provided outside the turn, wherein the step structure (31) is provided along the width of the turn.

15. The ultra-wideband-ridged orthogonal-mode coupler (OMT) according to claim 1, wherein the cross-sectional dimensions of the four ridges provided on said coupler satisfy the following formula:

in the formula, a₁The length of the long edge of the public port is the length of the long edge; a is₂Is the ridge width; b₁The length of the wide side of the public port; b₂Is the ridge spacing; u is relative magnetic permeability; is a relative dielectric constant; fc is the cut-off frequency; cf is the fringe capacitance.

16. An ultra-wideband-ridged orthogonal-mode coupler (OMT), characterized in that the ultra-wideband-ridged orthogonal-mode coupler model comprises a plurality of components, wherein the plurality of components are superimposed to form the mode splitting, combining and matching cavities of any of claims 1-15.

17. The uwb-ridged orthomode coupler (OMT) according to claim 16, characterized in that it is provided with a first ridge (13) and a second ridge (14), and in that said first ridge (13) is a first ridge (13) according to any one of claims 1 to 15 and in that said second ridge (14) is a second ridge (14) according to any one of claims 1 to 15, wherein said first ridge (13) is provided entirely on one component and said second ridge (14) is also provided entirely on one component.

18. The uwb-ridged orthomode coupler (OMT) according to claim 16, characterized in that it is provided with a third ridge (15) and a fourth ridge (16), and in that said third ridge (15) is a third ridge (15) according to any one of claims 1 to 15 and in that said fourth ridge (16) is a fourth ridge (16) according to any one of claims 1 to 15, wherein said third ridge (15) is provided entirely on one component and in that said fourth ridge (16) is also provided entirely on one component.

19. The OMT according to claim 17, wherein the coupler comprises at least three sets of elements, and wherein the three sets of elements are stacked in sequence to form the mode separation, combining and matching cavities according to any one of claims 1 to 15, wherein the first ridge (13) and the second ridge (14) are integrally disposed in an element (40) of a target set, wherein the element (40) of the target set is an element of the three sets of elements stacked in sequence in an intermediate position, and wherein the element (40) of the target set comprises at least two elements.

20. The OMT according to claim 19, wherein the target group of components (40) comprises a first component (41) and a second component (42), and wherein the first component (41) and the second component (42) are arranged side by side, wherein the first ridge (13) is arranged on the first component (41) and the second ridge (14) is arranged on the second component (42).