CN113193321A

CN113193321A - One-to-seven-path waveguide power divider

Info

Publication number: CN113193321A
Application number: CN202110536725.2A
Authority: CN
Inventors: 马升旺; 秦凡; 李勇朝; 王辉; 李琦
Original assignee: Xi'an Huateng Microwave Co ltd
Current assignee: Xi'an Huateng Microwave Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-07-30

Abstract

The invention discloses a one-to-seven-path waveguide power divider, which belongs to the technical field of microwave devices, and comprises a first power distribution main body, wherein the first power distribution main body comprises: a first input branch having a first input port; a first output branch; the second output branch is connected with a second side, far away from the first input port, of the first input branch; a first metal tuner; a second power distribution body, the second power distribution body comprising: the first level one-to-two-way equal power distribution branch is provided with two output ports; two second-stage two-way equal power distribution branches; a third power distribution body, the third power distribution body comprising: the first stage divides into two paths of unequal power distribution branches, the third output branch and the fourth output branch, and achieves the technical effect of realizing one-to-seven path power distribution of radio frequency and microwave signals in radar, satellite and remote sensing detection systems.

Description

One-to-seven-path waveguide power divider

Technical Field

The invention relates to the technical field of microwave devices, in particular to a one-to-seven-path waveguide power divider.

Background

As an important microwave passive device, the power divider has the function of dividing the energy of one path of input signals into two paths or even multiple paths of smaller energy signals for output, or synthesizing the multiple paths of smaller energy signals into one path of high-energy signal for output. The power divider is mainly divided into a microstrip power divider and a waveguide power divider, and in recent years, a Substrate Integrated Waveguide (SIW) power divider with the characteristics of both the microstrip and the waveguide power divider has also appeared. The microstrip power divider utilizes a metal microstrip line printed on a dielectric substrate as a transmission line, has the characteristics of miniaturization, planarization and easy integration to an active circuit, has the defects of large insertion loss and narrow working bandwidth, and is not easy to apply to high-frequency, broadband and high-power communication scenes due to the limitation of the size and parasitic effect of the device in a high-frequency scene; the waveguide power divider has smaller loss and wide working frequency band in a high-frequency scene compared with a microstrip line structure because microwaves are transmitted in the waveguide cavity through air coupling, and has larger power capacity because a metal waveguide cavity can bear higher electric field.

The design form of the current waveguide power divider is mainly a one-even-path output, and the most common one-two-path power divider is used, and the even-number multi-path power divider is realized by multi-stage cascade based on basic structures such as T-shaped junctions, Y-shaped junctions, magic T, couplers and the like, and also has a one-division multi-path design realized by radial lines and coaxial waveguide structures, but the structure has low space utilization rate and is not suitable for integrating and cascading with a system; in contrast, the odd-path waveguide power divider is designed and applied rarely, and one path of output of the even-path power divider is absorbed by using matched load in engineering, so that the odd-path power divider is obtained, but the power cost is increased by the method; the odd-number waveguide power divider mainly comprises three paths and five paths, the power dividing mechanism mainly comprises one path and three paths and one path and five paths, unequal power distribution is utilized for cascade connection to achieve one path and multiple path distribution and one path and multiple path distribution are directly achieved, design forms such as couplers, Bagley polygons, non-basic structures and the like are utilized, standard waveguide sizes are changed in a complex mode, devices for impedance transformation and power allocation are of non-regular structures, design is complex, redundant parameters needing to be adjusted are multiple, and therefore the performance of the power divider is limited, such as low working frequency and narrow passband bandwidth. The waveguide power divider utilizes a deployment structure to realize power distribution and impedance matching, the common deployment structure has various regular and irregular structures such as a groove, a bulge, a diaphragm, a probe, a wedge and the like, and more matching structures are introduced to easily increase the design complexity.

The hot spots of design and research of waveguide power splitters are still developing towards low reflection, low loss, higher working frequency and wider transmission bandwidth, the requirement for expanding the passband bandwidth is more and more obvious, and based on the waveguide and impedance transformation theory, performance requirements such as ridge waveguide, stepped impedance transformation structure, application deployment element and the like for realizing matching and expanding the transmission bandwidth are designed.

The design difficulty of the prior one-division multi-path waveguide power divider is odd paths, unequal power distribution and improvement of working bandwidth: in order to save power cost, odd-numbered power distribution is required to be realized by absorbing one output of an even-numbered distributor in a traditional way, and in order to reduce complexity, a structure is required to allocate devices as much as possible according to standard waveguide pipe sizes and the adopted rules; unequal power distribution is a difficult point of odd-path power divider design, and the key is to realize proportional power distribution, so that a basic power division structure can be adopted to realize the proportional power distribution through multi-stage cascade; the operating bandwidth directly limits the range of frequency bands over which the device can operate effectively.

Disclosure of Invention

The invention provides a one-to-seven-path waveguide power divider, which is used for solving the technical problems of narrow effective working bandwidth and complex design of the power divider in the prior art, particularly the odd-path waveguide power divider.

The invention provides a one-to-seven-path waveguide power divider, which comprises: a first power distribution body, wherein the first power distribution body comprises: a first input branch having a first input port; a first output branch connected to a first side of the first input branch distal from the first input port; a second output branch connected to a second side of the first input branch remote from the first input port; the first metal tuner is arranged at the connecting position of the first output branch and the second output branch so as to realize power tuning and impedance matching; a second power distribution body having an input connected with the first output branch of the first power distribution body, wherein the second power distribution body comprises: the first level one-to-two-way equal power distribution branch is provided with two output ports; two second-stage one-to-two-way equal power distribution branches, wherein one second-stage one-to-two-way equal power distribution branch is connected with one output port, and the other second-stage one-to-two-way equal power distribution branch is connected with the other output port; a third power distribution body having an input connected to the second output branch of the first power distribution body, wherein the third power distribution body comprises: the power distribution system comprises a first-stage one-to-two-way unequal power distribution branch, a third output branch and a fourth output branch, wherein the third output branch and the fourth output branch are respectively connected with two ends of the first-stage one-to-two-way unequal power distribution branch; after the first power distribution main body feeds in electromagnetic energy through the first input port, the fed-in electromagnetic energy is distributed to the second power distribution main body and the third power distribution main body in a branch-two way mode respectively, the second power distribution main body realizes the distribution of power in a branch-four way mode, and the third power distribution main body realizes the distribution of power in a branch-three way mode.

Preferably, the first power distribution body, the second power distribution body and the third power distribution body all adopt standard rectangular waveguides.

Preferably, a first groove is formed at a junction of the first output branch and the first input branch of the first power distribution main body, and a second groove is formed at a junction of the second output branch and the first input branch, so that the first groove and the second groove jointly form a first inductive window and are used for impedance matching.

Preferably, the first output branch comprises a first right-angle waveguide and a first horizontal waveguide, and the first right-angle waveguide is connected with the first horizontal waveguide, wherein a first rounded corner is correspondingly formed on the inner side of a right-angle position of the first right-angle waveguide, and a second rounded corner is correspondingly formed on the outer side of the right-angle position of the first right-angle waveguide; the second output branch comprises a second right-angle waveguide tube and a second horizontal waveguide tube, and the second right-angle waveguide tube is connected with the second horizontal waveguide tube, wherein a third fillet is correspondingly formed on the inner side of the right-angle position of the second right-angle waveguide tube, and a fourth fillet is correspondingly formed on the outer side of the right-angle position of the second right-angle waveguide tube; the first fillet, the second fillet, the third fillet and the fourth fillet are all used for reducing signal reflection in a smooth and gradual change mode.

Preferably, the first metal dispenser includes: the cone frustum comprises a cylindrical structure and a cone frustum structure, wherein the cylindrical structure is connected with the small end of the cone frustum structure, and the diameter of the cylindrical structure is the same as the diameter of the section of the small end of the cone frustum structure.

Preferably, the first metal tuner is disposed at an intersection point of a central axis of the first output branch and the second output branch along the length direction and a central axis of the first input branch along the length direction.

Preferably, the second power distribution body further includes: the second metal tuner is arranged on the first-stage one-to-two equal power distribution branch; a third metal tuner disposed on the one of the second level-to-two equal power distribution branches; the fourth metal tuner is arranged on the other second-stage two-branch equal power distribution branch; and the sizes of the second metal tuner, the third metal tuner and the fourth metal tuner are the same.

Preferably, a third groove and a fourth groove are arranged at the connection part of the first level one-to-two equal power distribution branch of the second power distribution main body and the first output branch of the first power distribution main body; the joint of the input branch and the output branch of one of the second-stage two-way equal power distribution branches is provided with a fifth groove and a sixth groove; a seventh groove and an eighth groove are arranged at the joint of the input branch and the output branch of the other second-stage two-way equal power distribution branch, wherein the third groove and the fourth groove jointly form a second inductive window, the fifth groove and the sixth groove jointly form a third inductive window, and the seventh groove and the eighth groove jointly form a fourth inductive window; fillets are correspondingly arranged on the outer side and the inner side of the connecting positions of the two output branches of the first-stage one-to-two-way equal power distribution branch and the right-angle waveguides of the two second-stage one-to-two-way equal power distribution branches; fillets are correspondingly arranged on the outer side and the inner side of the two right-angle output branches of one of the second-stage two-branch equal-power distribution branches, and fillets are correspondingly arranged on the outer side and the inner side of the two right-angle output branches of the other one of the second-stage two-branch equal-power distribution branches.

Preferably, a ninth groove and a tenth groove are formed at the connection position of the first level-to-two-way unequal power distribution branch of the third power distribution main body and the second output branch of the first power distribution main body; an eleventh groove and a twelfth groove are arranged at the connection position of the input branch and the output branch in the fourth output branch, wherein the ninth groove and the tenth groove jointly form a fifth inductive window, and the eleventh groove and the twelfth groove jointly form a sixth inductive window.

Preferably, the first power distribution body, the second power distribution body and the third power distribution body are all designed based on an H-plane T-shaped knot.

One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:

the embodiment of the invention provides a seven-channel waveguide power divider, which comprises a first power distribution main body, wherein the first power distribution main body comprises: a first input branch having a first input port; a first output branch connected to a first side of the first input branch distal from the first input port; a second output branch connected to a second side of the first input branch remote from the first input port; the first metal tuner is arranged at the connecting position of the first output branch and the second output branch so as to realize power tuning and impedance matching; a second power distribution body having an input connected with the first output branch of the first power distribution body, wherein the second power distribution body comprises: the first level one-to-two-way equal power distribution branch is provided with two output ports; two second-stage one-to-two-way equal power distribution branches, wherein one second-stage one-to-two-way equal power distribution branch is connected with one output port, and the other second-stage one-to-two-way equal power distribution branch is connected with the other output port; a third power distribution body having an input connected to the second output branch of the first power distribution body, wherein the third power distribution body comprises: the power distribution system comprises a first-stage one-to-two-way unequal power distribution branch, a third output branch and a fourth output branch, wherein the third output branch and the fourth output branch are respectively connected with two ends of the first-stage one-to-two-way unequal power distribution branch; after electromagnetic energy is fed in through the first input port, the first power distribution main body distributes the fed-in electromagnetic energy to the second power distribution main body and the third power distribution main body respectively in a one-to-two way mode, the second power distribution main body realizes one-to-four way power distribution, and the third power distribution main body realizes one-to-three way power distribution, so that the technical problems of narrow effective working bandwidth and complex design of a power divider, particularly an odd-number-way waveguide power divider in the prior art are solved, the technical effects of simple design, realization of full-bandwidth transmission under the working frequency band of each waveguide standard size through reasonable configuration and one-to-seven way power distribution of radio-frequency and microwave signals in radar, satellite and remote sensing detection systems can be realized.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Fig. 1 is a schematic structural diagram of a one-to-seven-path waveguide power divider according to an embodiment of the present invention;

fig. 2 is a side view of a first power distribution body in a seven-way waveguide power divider according to an embodiment of the present invention;

fig. 3 is a top view of a first power distribution body in a seven-channel waveguide power divider according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an inductive window in a one-to-seven-path waveguide power divider according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a tuner in a one-to-seven-path waveguide power divider according to an embodiment of the present invention;

fig. 6 is a side view of a second power distribution body in a seven-way waveguide power divider according to an embodiment of the present invention;

fig. 7 is a top view of a second power distribution body in a seven-channel waveguide power divider according to an embodiment of the present invention;

fig. 8 is a side view of a third power distribution body in a seven-way waveguide power divider according to an embodiment of the present invention;

fig. 9 is a top view of a third power distribution body in a seven-channel waveguide power divider according to an embodiment of the present invention;

fig. 10 is a graph illustrating a relationship between a working frequency and an output port transmission coefficient at an initial frequency of 22GHz and a termination frequency of 32GHz in a seven-channel waveguide power divider according to an embodiment of the present invention;

fig. 11 is a graph illustrating a relationship between a working frequency and an input port return loss at an initial frequency of 22GHz and a termination frequency of 32GHz in a seven-branch waveguide power divider according to an embodiment of the present invention;

fig. 12 is another graph illustrating a relationship between operating frequency and transmission coefficient of an output port at an initial frequency of 22GHz and a termination frequency of 32GHz in a seven-channel waveguide power divider according to an embodiment of the present invention;

fig. 13 is another graph illustrating the relationship between the operating frequency and the input port return loss at the start frequency of 22GHz and the end frequency of 32GHz in a seven-channel waveguide power divider according to an embodiment of the present invention.

Description of reference numerals: a first power distribution body 1, a first input branch 11, a first input port 111, a first output branch 12, a second output branch 13, a first metal distributor 14, a first groove 112, a second groove 113, a first rounded corner 122, a second rounded corner 121, a third rounded corner 132, a fourth rounded corner 131, a cylindrical structure 141, a frustum structure 142, a second power distribution body 2, a second-stage one-way equal power distribution branch 22, a second-stage one-way equal power distribution branch 23, a second metal distributor 211, a third metal distributor 221, a fourth metal distributor 231, a cylinder 2111, a frustum 2112, a cylinder 2211, a frustum 2212, a cylinder 2311, a frustum 2312, a third groove 212, a fourth groove 213, a fifth groove 222, a sixth groove 223, a seventh groove 232, an eighth groove 233, an output port 226, an output port 227, an output port 236, an output port 237, a rounded corner 214, the third power distribution main body 3 comprises a rounded corner 215, a rounded corner 224, a rounded corner 225, a rounded corner 234, a rounded corner 235, a first-level two-branch unequal power distribution branch 31, a third output branch 32, a fourth output branch 33, a ninth groove 312, a tenth groove 313, an eleventh groove 332, a twelfth groove 333, a fifth metal tuner 311, a sixth metal tuner 331, a rounded corner 334, a rounded corner 335, a port 336, a port 337 and a port 321.

Detailed Description

The embodiment of the invention provides a one-to-seven-path waveguide power divider, which is used for solving the technical problems of narrow effective working bandwidth and complex design of the power divider in the prior art, particularly the odd-path waveguide power divider.

The technical scheme in the embodiment of the invention has the following general idea:

the embodiment of the invention provides a waveguide power divider capable of dividing into seven paths, which comprises: a first power distribution body, wherein the first power distribution body comprises: a first input branch having a first input port; a first output branch connected to a first side of the first input branch distal from the first input port; a second output branch connected to a second side of the first input branch remote from the first input port; the first metal tuner is arranged at the connecting position of the first output branch and the second output branch so as to realize power tuning and impedance matching; a second power distribution body having an input connected with the first output branch of the first power distribution body, wherein the second power distribution body comprises: the first level one-to-two-way equal power distribution branch is provided with two output ports; two second-stage one-to-two-way equal power distribution branches, wherein one second-stage one-to-two-way equal power distribution branch is connected with one output port, and the other second-stage one-to-two-way equal power distribution branch is connected with the other output port; a third power distribution body having an input connected to the second output branch of the first power distribution body, wherein the third power distribution body comprises: the power distribution system comprises a first-stage one-to-two-way unequal power distribution branch, a third output branch and a fourth output branch, wherein the third output branch and the fourth output branch are respectively connected with two ends of the first-stage one-to-two-way unequal power distribution branch; after the first power distribution main body feeds in electromagnetic energy through the first input port, the fed-in electromagnetic energy is distributed to the second power distribution main body and the third power distribution main body in a branch-two way mode respectively, the second power distribution main body realizes the distribution of power in a branch-four way mode, and the third power distribution main body realizes the distribution of power in a branch-three way mode.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Fig. 1 is a diagram illustrating a waveguide power divider with one path and seven paths according to an embodiment of the present invention, and as shown in fig. 1, the waveguide power divider includes:

a first power distribution body 1, wherein the first power distribution body 1 includes: a first input branch 11, said first input branch 11 having a first input port 111; a first output branch 12, the first output branch 12 being connected to a first side of the first input branch 11 remote from the first input port; a second output branch 13, the second output branch 13 being connected to a second side of the first input branch 11 remote from the first input port; a first metal tuner 14, wherein the first metal tuner 14 is disposed at a connection position of the first output branch 12 and the second output branch 13 to implement power matching and impedance matching.

Specifically, the waveguide power divider in this embodiment is a one-to-seven-path waveguide power divider, and includes a first-stage one-to-two-path power distribution main body, a second-stage one-to-four-path power distribution main body, and a one-to-three-path power distribution main body, where an inductive window formed by a metal cylinder-frustum assembly and a symmetric groove is configured in each main body as a deployment structure, a fillet smooth structure is introduced at a right-angle abrupt change position of each main body waveguide tube, all the main bodies are connected seamlessly, and the main bodies all adopt the size of a standard rectangular waveguide tube. The first power distribution main body 1 is a first-stage one-to-two power distribution main body in the waveguide power divider, and the first power distribution main body 1 specifically includes: a first input branch 11, a first output branch 12, a second output branch 13, and a first metal tuner 14, wherein the first input branch 11 is a portion of the first power distribution body 1 for inputting, and the first input branch 11 has a first input port 111. Further, the first output branch 12 and the second output branch 13 are both connected to the first input branch 11, wherein the first output branch 12 is connected to a first side of the first input branch 11 away from the first input port, and the second output branch 13 is connected to a second side of the first input branch 11 away from the first input port; the first metal tuner 14 is installed at the connection position of the first output branch 12 and the second output branch 13, so as to achieve the purpose of power tuning and impedance matching.

Further, a first groove 112 is formed at a connection position of the first output branch 12 and the first input branch 11, and a second groove 113 is formed at a connection position of the second output branch 13 and the first input branch 11, so that the first groove 112 and the second groove 113 jointly form a first inductance window and are used for impedance matching.

Specifically, as shown in fig. 2 and 3, a groove is formed on the outer side of the connection between the first output branch 12 and the first input branch 11, that is, the first groove 112, and similarly, a groove is formed on the outer side of the connection between the second output branch 13 and the first input branch 11, that is, the second groove 113, so that as shown in fig. 4, the first groove 112 and the second groove 113 together form an inductive window, thereby achieving the purpose of impedance matching through the first inductive window. And the first recess 112 and the second recess 113 are symmetrical about the broadside central axis of the first input branch 11.

Further, the first output branch 12 includes a first right-angle waveguide and a first horizontal waveguide, and the first right-angle waveguide is connected to the first horizontal waveguide, wherein a first fillet 122 is correspondingly formed on an inner side of a right angle of the first right-angle waveguide, and a second fillet 121 is correspondingly formed on an outer side of the right angle of the first right-angle waveguide; the second output branch 13 includes a second right-angle waveguide and a second horizontal waveguide, and the second right-angle waveguide is connected to the second horizontal waveguide, wherein a third fillet 132 is correspondingly formed on the inner side of the right angle of the second right-angle waveguide, and a fourth fillet 131 is correspondingly formed on the outer side of the right angle of the second right-angle waveguide; wherein, the first rounded corner 122, the second rounded corner 121, the third rounded corner 132 and the fourth rounded corner 131 are all used for reducing signal reflection in a smooth and gradual manner.

Specifically, the first output branch 12 may be used for inputting the second power distribution main body 2, the second output branch 13 may be used for inputting the third power distribution main body 3, and further, the first output branch 12 is shaped into an L-shaped structure, so that the first output branch 12 includes a first right-angle waveguide and a first horizontal waveguide, and after being connected by the first right-angle waveguide and the first horizontal waveguide, the L-shaped structure may be formed, meanwhile, a first rounded corner 122 is correspondingly formed on an inner side of the right-angle waveguide at the right-angle, and a second rounded corner 121 is correspondingly formed on an outer side of the right-angle at the first right-angle waveguide at the first output branch 12, that is, both the outer side and the inner side of the right-angle waveguide at the first output branch 12 have a rounded corner design; further, the shape of second output branch 13 is unified to an L type structure, consequently, after connecting through second right angle waveguide and second horizontal waveguide, can constitute L type structure, simultaneously, third radius angle 132 has been seted up to inboard correspondence at the right angle department of second right angle waveguide, fourth radius angle 131 has been seted up to outside correspondence at the right angle department of second right angle waveguide, that is to say, the outside and the inboard of right angle waveguide department at second output branch 13 all have a radius angle design, can reach the technological effect that smooth gradual change reduces signal reflection through the design of radius angle.

Further, the first metal coordinator 14 includes: the conical frustum structure comprises a cylindrical structure 141 and a conical frustum structure 142, wherein the cylindrical structure 141 is connected with the small end of the conical frustum structure 142, and the diameter of the cylindrical structure 141 is the same as the diameter of the section of the small end of the conical frustum structure 142.

Further, the first metal tuner 14 is disposed at the intersection of the central axis of the first output branch 12 and the central axis of the second output branch 13 along the length direction and the central axis of the first input branch 11 along the length direction.

Specifically, as shown in fig. 5, the first metal tuner 14 is a metal tuner, and the first metal tuner 14 is installed at the intersection point of the central axis of the first input branch 11 in the length direction and the central axes of the first output branch 12 and the second output branch 13 in the length direction, and its structure includes a cylinder and a frustum, i.e., a cylinder structure 141 and a frustum structure 142, whose shapes are similar to a funnel shape, so that the diameter of the cylinder structure 141 is the same as the diameter of the cross-sectional circle of the small end of the frustum structure 142, the first metal tuner 14 is formed by combining a concentric metal cylinder and a metal frustum, and the first metal tuner 14 is located in the output waveguide and has a center located on the central axis of the wide side of the bottom surface of the first input branch 11 and is spaced from the inner wall of the output waveguide by a specific offset amount. The power matching and impedance matching can be performed by the first metal tuner 14.

Further, the waveguide power divider further includes: a second power splitting body 2, an input of the second power splitting body 2 being connected with the first output branch 12 of the first power splitting body 1, wherein the second power splitting body 2 comprises: a first level one-to-two equal power distribution branch 21, the first level one-to-two equal power distribution branch 21 having two output ports; two second-stage one-to-two-way equal power distribution branches, wherein one second-stage one-to-two-way equal power distribution branch 22 is connected with one output port, and the other second-stage one-to-two-way equal power distribution branch 23 is connected with the other output port;

specifically, as shown in fig. 6 and 7, the input end of the second power distribution main body 2 is connected to the first output branch 12 of the first power distribution main body 1, where the second power distribution main body 2 includes a first-stage one-to-two equal power distribution branch 21 and two second-stage one-to-two equal

power distribution branches

22 and 23, specifically: the first level one-to-two equal power distributing branch 21 has two output ports, such that one of said second level one-to-two equal power distributing branches 22 can be connected with one output port of the first level one-to-two equal power distributing branch 21, and the other second level one-to-two equal power distributing branch 23 can be connected with the other output port of the first level one-to-two equal power distributing branch 21.

Further, the second power distribution body 2 further includes: a second metal tuner 211, wherein the second metal tuner 211 is disposed on the first level one-to-two equal power distribution branch 21; a third metal tuner 221, wherein the third metal tuner 221 is disposed on the one of the second level two-way equal power distribution branches 22; a fourth metal tuner 231, wherein the fourth metal tuner 231 is disposed on the another second level two-way equal power distribution branch 23; the sizes of the second metal tuner 211, the third metal tuner 221 and the fourth metal tuner 231 are the same.

Specifically, the second power distribution main body 2 is also provided with a plurality of metal distributors, which are the second metal distributor 211, the third metal distributor 221, and the fourth metal distributor 231, specifically: the second metal tuner 211 is arranged on the first-stage one-to-two-way equal power distribution branch 21 and structurally formed by combining a cylinder 2111 and a frustum 2112; the third metal tuner 221 is a tuner in the second-level one-to-two-way equal-power distribution branch 22, and is structurally formed by combining a cylinder 2211 and a frustum 2212; the fourth metal tuner 231 is a tuner in the other second-stage one-to-two-branch equal power distribution branch 23, and is structurally formed by combining a cylinder 2311 and a frustum 2312, wherein the second metal tuner 211, the third metal tuner 221 and the fourth metal tuner 231 are the same in size. All the inductive windows are symmetrical about the central axis of the wide side of the branch, all the regulators are positioned in the output waveguide, and the center of the regulator is positioned on the central axis of the wide side of the bottom surface of the input waveguide and is spaced from the inner wall of the output waveguide by a specific offset.

Further, a third groove 212 and a fourth groove 213 are formed at the connection position of the first level one-to-two equal power distribution branch 21 and the first output branch 12; the junction of the input branch and the output branch of one of the second-stage two-way equal power distribution branches 22 is provided with a fifth groove 222 and a sixth groove 223; a seventh notch 232 and an eighth notch 233 are arranged at the connection of the input branch and the output branch of the other second-stage two-way equal power distribution branch 23, wherein the third notch 212 and the fourth notch 213 jointly form a second inductive window, the fifth notch 222 and the sixth notch 223 jointly form a third inductive window, and the seventh notch 232 and the eighth notch 233 jointly form a fourth inductive window; fillets are correspondingly arranged on the outer side and the inner side of the connecting positions of the two output branches of the first-stage one-to-two-way equal power distribution branch 21 and the right-angle waveguides of the two second-stage one-to-two-way equal power distribution branches 22 and 23; fillets are correspondingly arranged on the outer side and the inner side of the two right-angle output branches of one of the second-stage two-branch equal power distribution branches 22, and fillets are correspondingly arranged on the outer side and the inner side of the two right-angle output branches of the other second-stage two-branch equal power distribution branch 23.

Specifically, a groove is provided at the joint of the first power distribution main body 1 and the second power distribution main body 2, in other words, a third groove 212 and a fourth groove 213 are provided at the joint of the first level one-to-two equal power distribution branch 21 and the first output branch 12, and then a second inductive window is formed by the third groove 212 and the fourth groove 213 together, further, a fillet 214 is provided at the outer side and a fillet 215 is provided at the inner side of the joint of the right-angled waveguides of the two output branches of the first level one-to-two equal power distribution branch 21 and the two second level one-to-two equal power distribution branches 22 and 23; furthermore, a fifth groove 222 and a sixth groove 223 are arranged at the connection position of the input branch and the output branch of one of the second-stage two-branch equal power distribution branches 22, and a third inductive window is formed by the fifth groove 222 and the sixth groove 223 together, and furthermore, fillets are arranged on the outer side and the inner side of two right-angle output branches of one of the second-stage two-branch equal power distribution branches 22, namely, the outer side is provided with a fillet 224 and the inner side is provided with a fillet 225; the connection part of the input branch and the output branch of the other second-stage one-branch two-way equal power distribution branch 23 is provided with a seventh groove 232 and an eighth groove 233, then the seventh groove 232 and the eighth groove 233 jointly form a fourth sensing window, and furthermore, the outer side and the inner side of the two right-angle output branches of the other second-stage one-branch two-way equal power distribution branch 23 are provided with fillets, namely, the outer side is provided with a fillet 234 and the inner side is provided with a fillet 235. One of the second level two-branch equal power distribution branches 22 has two output ports, i.e., output port 226 and output port 227, and the other second level two-branch equal power distribution branch 23 has two output ports, i.e., output port 236 and output port 237.

Further, the waveguide power divider further includes: a third power splitting body 3, an input of which is connected with the second output branch 13 of the first power splitting body 1, wherein the third power splitting body 3 comprises: a first one-to-two unequal power distribution branch 31, a third output branch 32 and a fourth output branch 33, wherein the third output branch 32 and the fourth output branch 33 are respectively connected with two ends of the first one-to-two unequal power distribution branch 31;

specifically, as shown in fig. 8 and 9, the third power distribution main body 3 is connected to the second output branch 13 of the first power distribution main body 1, and the third power distribution main body 3 includes: the first stage divides the two-way unequal power distribution branch 31, the third output branch 32 and the fourth output branch 33, and the third output branch 32 and the fourth output branch 33 are respectively connected with the first stage divides the two-way unequal power distribution branch 31. Meanwhile, the third output branch 32 is a branch output of the first level one-to-two unequal power distribution branch 31, and the fourth output branch 33 is a second level one-to-two equal power distribution branch of the third power distribution main body 3.

Further, a ninth groove 312 and a tenth groove 313 are formed at the connection position of the first level one-to-two unequal power distribution branch 31 and the second output branch 13; an eleventh groove 332 and a twelfth groove 333 are provided at the connection of the input and output branches of the fourth output branch 33, wherein the ninth groove 312 and the tenth groove 313 together form a fifth inductive window, and the eleventh groove 332 and the twelfth groove 333 together form a sixth inductive window.

Specifically, the ninth and tenth grooves 312 and 313 are the grooves at the connection of the first and third

power distribution bodies

1 and 3, in other words, the connection of the first level one-to-two unequal power distribution branch 31 and the second output branch 13 has the ninth and tenth grooves 312 and 313, and the ninth and tenth grooves 312 and 313 together constitute a fifth inductive window; the eleventh and

twelfth grooves

332, 333 are grooves at the connection of the input and output branches of the fourth output branch 33, and the eleventh and

twelfth grooves

332, 333 jointly constitute a sixth inductive window.

Further, a tuner, namely a fifth metal tuner 311, is arranged in the first level one-to-two branch unequal power distribution branch 31, and the structure of the tuner is formed by combining a cylinder 3111 and a frustum 3112, rounded corners 314 are arranged on the outer sides of two right-angle output branches of the first level one-to-two branch unequal power distribution branch 31, rounded corners 315 are arranged on the inner sides of the two right-angle output branches, and a port 321 is an output port eight; further, a distributor, i.e., a sixth metal distributor 331, is disposed in the fourth output branch 33, and the structure of the sixth metal distributor is formed by combining a cylinder 3311 and a frustum 3312, a rounded corner 334 is disposed on the outer side of the connection between the input branch and the output branch in the fourth output branch 33, a rounded corner 335 is disposed on the inner side, and the port 336 is an output port six, and the port 337 is an output port seven. All the inductive windows are symmetrical about the central axis of the wide side of the branch, the tuner formed by the combination of the metal cylinder and the frustum in the first-stage one-to-two-way unequal power distribution branch 31 has a specific offset along the intersection point of the central axes of the input waveguide and the output waveguide of the branch, so that the proportional distribution of power is realized, and the tuner in the fourth output branch 33 is positioned in the output waveguide and has a specific offset with the distance between the center of the wide side of the bottom surface of the input waveguide and the inner wall of the output waveguide.

Further, after the first power distribution main body 1 feeds electromagnetic energy through the first input port 111, the electromagnetic energy is divided into two paths and distributed to the second power distribution main body 2 and the third power distribution main body 3, the power distribution of four paths is realized through the second power distribution main body 2, and the power distribution of three paths is realized through the third power distribution main body 3.

Specifically, the first power distribution main body 1 distributes the electromagnetic energy fed in from the first input port 111 into the second power distribution main body 2 and the third power distribution main body 3 in two ways, so that the signal output by the first output branch 12 is distributed into four ways in one way through the second power distribution main body 2, the port 226, the port 227, the port 236 and the port 237 are output ports two, three, four and five in sequence, the signal output by the second output branch 13 is distributed into three ways in one way through the third power distribution main body 3, the port 336, the port 337 and the port 321 are output ports six, seven and eight in sequence, and finally, the electromagnetic energy fed in from the first input port 111 is distributed into seven ways in one way through the present application.

Further, the first power distribution body 1, the second power distribution body 2, and the third power distribution body 3 all use standard rectangular waveguides.

Further, the first power distribution body 1, the second power distribution body 2 and the third power distribution body 3 are all designed based on an H-plane T-shaped knot.

Specifically, all the bodies of the first power distribution body 1, the second power distribution body 2 and the third power distribution body 3 are connected seamlessly, and the bodies adopt standard rectangular waveguide dimensions. That is to say, the waveguide tubes in the present application all adopt standard rectangular waveguide dimensions, the first power distribution main body 1, the second power distribution main body 2, and the third power distribution main body 3 are all based on the H-face T-junction design, and the tuner in the waveguide cavity is a cylinder and frustum combined structure, so the design is simple, the processing is easy, compared with the scheme of adopting non-standard dimension waveguide tubes and utilizing multiple sections of ridge waveguides in the existing design, the technical effect of reducing the processing difficulty and cost is achieved. Furthermore, the height of the metal cylinder-frustum combined tuner in each main body is the dimension b of the narrow side of the standard rectangular waveguide tube, the radius of the cylinder is consistent with that of the upper bottom of the frustum, and the radius of the lower bottom of the frustum is larger than that of the upper bottom; the inductive windows in the main bodies are concave towards the inner side of the waveguide tube, the sizes are consistent, namely the height is the size b of the narrow side of the standard rectangular waveguide tube, and the length and the width are z1 and x 1; fillet smooth structures are introduced at right-angle sudden changes of the waveguide pipes in the main bodies, and corresponding fillet radiuses of the waveguide pipes need to be configured respectively.

The seven-branch metal waveguide power divider in the application is a space n-shaped structure, and can be replaced by a plane n-shaped structure, and the difference is that the joints of the first output branch 12 and the first output branch 13 of the first power distribution main body 1, the second power distribution main body 2 and the third power distribution main body 3 all keep the H surfaces on the same horizontal plane. Meanwhile, the present embodiment is an equal-division output with one-to-seven paths, and if the first power distribution main body 1 is adjusted and optimized according to the design concept, the equal-division output with one-to-seven paths can be finally realized.

Furthermore, compared with the existing microstrip line multi-branch odd-numbered path power division structure, the microstrip line multi-branch odd-numbered path power division structure has the advantages of low loss, high power capacity and ultra-wide working frequency band when used for transmitting high-frequency electromagnetic waves; compared with a scheme of absorbing one output of the one-to-eight-path power divider by using matched load, the one-to-seven-path waveguide power divider provided by the application saves power overhead.

Furthermore, compared with the existing design, the introduction of the metal tuner utilizes the scheme of changing the structure of the inner wall of the cavity to realize unequal power dividers and odd power dividers, thereby expanding the working bandwidth and realizing power distribution at the same time.

Further, a pair of symmetrical groove structures are respectively introduced into the input branches of the first power distribution main body 1, the second power distribution main body 2 and the third power distribution main body 3 and the input branches and the output branches of the one-to-two structure for cascade connection, and the corresponding pair of grooves form an inductive window to realize impedance matching; rounded corners are introduced at the outer side and the inner side of the inductive window and the right-angle branch waveguide in the first power distribution main body 1, the second power distribution main body 2 and the third power distribution main body 3 to replace a polygonal structure in the existing design, so that impedance smooth transformation can be further achieved, and signal reflection is reduced.

Furthermore, the full-bandwidth transmission of the electromagnetic waves under the working frequency band corresponding to the standard waveguide size can be realized through reasonable configuration under the condition that the standard waveguide size is adopted, namely the full-bandwidth transmission is not limited by the waveguide size and the working frequency.

Example two

For more clearly explaining the present application, a one-to-seven-path waveguide power divider of the present application is described in detail further below:

as shown in fig. 1, the present application includes a first-stage one-to-two power distribution main body, a second-stage one-to-four power distribution main body and a one-to-three power distribution main body, wherein the

main bodies

2 and 3 are respectively cascaded to two

output branches

12 and 13 of the main body 1, all the waveguide tubes have the size of WR34 standard rectangular waveguide tube, the wide side a is 8.636mm, and the narrow side b is 4.318 mm.

As shown in fig. 2 and 3, the first power distribution body 1 includes a first input branch 11, a first output branch 12 and a second output branch 13, and the whole structure has a length L11-23.64 mm and a width L21-38.64 mm; the first output branch 12 and the second output branch 13 are respectively used as the input of the second power distribution body 2 and the third power distribution body 3, the total length L2 of the first output branch 12 and the second output branch 13 is 30mm, the radius of the second rounded corner 121 is 5.40mm, the radius of the first rounded corner 122 is 0.57mm, the radius of the third rounded corner 132 and the fourth rounded corner 131 is corresponding to the radius of the first rounded corner 122 and the radius of the second rounded corner 121, the metal adapter plays a role in power adjustment and impedance matching, the size and the position of the metal adapter are very important for the power divider of the present application, the first metal adapter 14 is formed by combining a cylindrical structure 141 and a frustum structure 142, in this example, the radius R141 of the bottom surface of the cylindrical body is 0.5mm, the height is b, the radius R142 of the bottom of the frustum is 2.8mm, the radius of the upper bottom is coincident with the radius R141 and the cross section of the cylindrical body, and the height H142 is 2mm, the first metal tuner 14 is initially located at the intersection point of the central axes of the input branch and the output branch, so that the first power distribution main body 1 can realize one-half power distribution, and the first metal tuner 14 is shifted by 0.7mm from the intersection point to the outer side of the output waveguide wall, so that better transmission characteristics can be obtained. The electromagnetic energy fed in from the first input port 111 passes through the first power distribution main body 1 to realize one-to-two equal power distribution.

As shown in fig. 6 and 7, the second power distribution main body 2 includes a first level one-to-two equal power distribution branch 21 and second level one-to-two equal

power distribution branches

22 and 23, and the whole structure has a length L21-62.27 mm and a width L22-72.24 mm. The second metal tuner 211 is formed by combining a cylinder 2111 and a frustum 2112, the first metal tuner 14 is referred to at the position in the cavity of the first-stage one-to-two-way equal power distribution branch 21, and the second metal tuner 211 is different from the first metal tuner 14 in that the radius R2112 of the lower bottom of the frustum in the second metal tuner 211 is 2.7 mm; radius R214 of fillet 214 is 10.5mm, and radius R215 of fillet 215 is 1.5 mm; the third metal tuner 221 has the same structure and size as the second metal tuner 211, and the first metal tuner 14 is referenced in the cavity of one of the second-level two-branch equal power distribution branches 22; the fifth groove 222 and the sixth groove 223 have the same structure and size as the third groove 212 and the fourth groove 213, and the ports 226 and 227 are output ports two and three, respectively; the radius of the structures of the rounded corners 224 and 225 are respectively the same as the rounded corners 214 and 215; the fourth metal tuner 231 has the same structure and size as the second metal tuner 211, and is positioned in the cavity of the second-stage two-branch equal-power distribution branch 23 with reference to the first metal tuner 14; the seventh groove 232 and the eighth groove 233 have the same structure and size as the third groove 212 and the fourth groove 213; the radius of the structures of the fillets 234 and 235 is the same as that of the fillets 214 and 215; the ports 236 and 237 are output ports four and five. The electromagnetic energy transmitted through the first output branch 12 of the first power distribution main body passes through the second power distribution main body 2 to realize one-to-four equal power distribution.

Referring to fig. 8 and 9, the third power distribution main body 3 includes a first-stage one-to-two unequal power distribution branch 31 and two output branches, i.e., a third output branch 32 and a fourth output branch 33, connected to the first-stage one-to-two unequal power distribution branch 31, where the overall length L31 is 62.27mm and the width L32 is 72.24mm, the third output branch 32 is one-way output of the first-stage one-to-two unequal power distribution branch 31, and the fourth output branch 33 is a second-stage one-to-two equal power distribution branch of the third power distribution main body 3. Referring to fig. 5, the structure of the fifth metal tuner 311 in the first-stage one-to-two unequal power distribution branch 31 is the same as that of the second metal tuner 211, and the fifth metal tuner 311 plays a very important role in implementing proportional power distribution of the first-stage one-to-two unequal power distribution branch 31, in this example, in order to implement 1 for the first-stage one-to-two unequal power distribution branch 31 in the third power distribution main body 3: 2, the power division ratio is 2, and by taking the intersection point of the central axes of the input waveguide and the output waveguide of the first-stage one-to-two path distribution branch 31 as a reference point, the fifth metal tuner 311 firstly deviates 0.7mm along the central axis of the input branch to the outer wall direction of the output waveguide and then deviates 1.04mm along the central axis of the output branch to the direction close to the third output branch 32 by referring to the first metal tuner 14; referring to fig. 4, the ninth and tenth recesses 312 and 313 have the same structure and size as the third and fourth recesses 212 and 213 of the second power distributing body 2; the radius R314 of the fillet 314 is 10.5mm, and the radius R315 of the fillet 315 is 0.5 mm; port 321 is output port eight; the sixth metal tuner 331 is identical in structure, size and position in the fourth output branch 33 to the second metal tuner 211; the eleventh and twelfth grooves 332, 333 are grooves at the connection of the input and output branches of the fourth output branch 33, and have the same structure and size as the third and fourth grooves 212, 213 of the second power distribution main body 2; the corresponding radiuses of the rounded corners 334 and 335 are the same as the radiuses of the rounded corners 314 and 315; ports 336 and 337 are output ports six and seven, respectively. The electromagnetic energy transmitted from the second output branch 13 of the first power distribution main body 1 passes through the third power distribution main body 3 to realize three-way equal power distribution.

The technical effects of the present application are further explained by combining simulation experiments as follows:

(1) simulation conditions and contents, specifically: using commercial simulation software HFSS, setting a start frequency of 22GHz and an end frequency of 32GHz, the filling material in the waveguide cavity was air (relative permittivity of about 1, relative permeability of about 1.0000, conductivity 0), and the tuner material selected an ideal electrical conductor (PEC, relative permittivity of 1, relative permeability of 1, conductivity infinite). The results of the relationship between the operating frequency and the transmission coefficient obtained by performing simulation calculation on the present application are shown in fig. 10, and the results of the operating frequency and the return loss of the input port are shown in fig. 11.

(2) The simulation result analysis of the one-to-seven-path waveguide power divider in the first embodiment specifically includes: referring to fig. 10, fig. 10 is a graph showing a relationship between a working frequency and a transmission coefficient at a starting frequency of 22GHz and a terminating frequency of 32GHz in the embodiment of the present application, and it can be seen from the graph that curves of the transmission coefficients S21, S31, S41, and S51 varying with frequency within a working frequency band of 22GHz-32GHz are relatively consistent, transmission coefficients of four ports are within-9.03 ± 0.44dB, and output ports two, three, four, and five correspond to four output ports of the second stage one-to-four power splitting main body 2 cascaded after the first output branch 12 of the first stage one-to-two power splitting main body 1 in the present application, which also proves that the power amplitude flatness of the one-to-four power splitting branch cascaded to the first stage one-to-two power splitting main body 1 is relatively good. The six, seven and eight output ports correspond to three output ports of the second-stage one-to-three power dividing main body 3 which are cascaded behind the second output branch 13 of the first-stage one-to-two power dividing main body 1 in the application, the insertion loss of the three output ports is better than 0.5dB between 22GHz and 27GHz, the transmission coefficients S61 and S71 are relatively consistent with the frequency change in the working frequency band between 22GHz and 32GHz, the transmission coefficients of the two ports are within-7.78 +/-0.95 dB, and the S81 is between-6.23 dB and-8.29 dB. The above results show that the electromagnetic energy power divider has lower energy loss while realizing the power division of electromagnetic energy into seven paths.

Referring to fig. 11, fig. 11 is a graph showing the relationship between the operating frequency and the input port return loss at the start frequency of 22GHz and the end frequency of 32GHz in a first embodiment of the waveguide power divider of the present application, and it can be seen that the input port return loss S11 is better than-18.45 dB in the operating band of 22GHz-32GHz, and the result shows that electromagnetic energy fed into the present application through (111) is less reflected in the waveguide cavity and has full-width band characteristics.

Fig. 12 is another graph showing the relationship between the operating frequency and the transmission coefficient at the start frequency of 22GHz and the end frequency of 32GHz according to the second embodiment of the seven-way waveguide power divider of the present application. The amplitudes of the two ports to the seven ports are relatively flat in the whole working frequency band, the amplitude of the eight port is relatively consistent with that of the other ports at 22-27GHz, but the lifting occurs in a high-frequency part of 27-32 GHz. In the whole 22-32GHz band, the transmission coefficient S21 is 8.45 +/-0.48 dB, the transmission coefficient S31 is 8.45 +/-0.5 dB, the transmission coefficient S41 is 8.45 +/-0.42 dB, the transmission coefficient S51 is 8.45 +/-0.43 dB, the transmission coefficients S61 and S71 are 8.45 +/-0.73 dB, and the transmission coefficient S81 is 8.45 +/-2 dB. According to simulation data, due to the adoption of a cascading method, the flatness of the two, three, four and five amplitudes of the port is consistent, the insertion loss is within 0.5dB, and the trend of the four-path output curve is consistent with that of a one-to-four output curve; the six, seven and eight ports correspond to the original one-to-three structure, the curve trend of the structure is more consistent with the output of the one-to-three structure, and the cascaded one-to-three equal division does not achieve the ideal effect, so that the eight ports in the whole seven equal division output have larger insertion loss.

Fig. 13 shows another relationship between the operating frequency and the input port return loss at the start frequency of 22GHz and the end frequency of 32GHz of the seven-way waveguide power divider according to the second embodiment of the present invention, where the input port return loss S11 is better than-19.20 dB in the frequency band of 22-32GHz, as shown in fig. 13.

The simulation result shows that the power divider can realize one-to-seven power distribution of high-frequency electromagnetic waves, has the characteristics of full bandwidth and low loss under the size of a standard waveguide, improves the working frequency and expands the transmission bandwidth compared with the odd-path power divider in the prior art, and can be applied to the technical fields of high-frequency and high-power microwaves such as radar, communication, remote sensing and the like.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims

1. A one-to-seven-path waveguide power divider is characterized by comprising:

a first power distribution body, wherein the first power distribution body comprises:

a first input branch having a first input port;

a first output branch connected to a first side of the first input branch distal from the first input port;

a second output branch connected to a second side of the first input branch remote from the first input port;

the first metal tuner is arranged at the connecting position of the first output branch and the second output branch so as to realize power tuning and impedance matching;

a second power distribution body having an input connected with the first output branch of the first power distribution body, wherein the second power distribution body comprises:

the first level one-to-two-way equal power distribution branch is provided with two output ports;

two second-stage one-to-two-way equal power distribution branches, wherein one second-stage one-to-two-way equal power distribution branch is connected with one output port, and the other second-stage one-to-two-way equal power distribution branch is connected with the other output port;

a third power distribution body having an input connected to the second output branch of the first power distribution body, wherein the third power distribution body comprises:

the power distribution system comprises a first-stage one-to-two-way unequal power distribution branch, a third output branch and a fourth output branch, wherein the third output branch and the fourth output branch are respectively connected with two ends of the first-stage one-to-two-way unequal power distribution branch;

after the first power distribution main body feeds in electromagnetic energy through the first input port, the fed-in electromagnetic energy is distributed to the second power distribution main body and the third power distribution main body in a branch-two way mode respectively, the second power distribution main body realizes the distribution of power in a branch-four way mode, and the third power distribution main body realizes the distribution of power in a branch-three way mode.

2. The waveguide power divider of claim 1, wherein the first, second and third power distribution bodies are standard rectangular waveguides.

3. The waveguide power divider of claim 1, wherein a junction of the first output branch and the first input branch of the first power distribution body has a first groove, and a junction of the second output branch and the first input branch has a second groove, such that the first groove and the second groove together form a first inductive window and are used for impedance matching.

4. The waveguide power divider of claim 1, wherein the first output branch comprises a first right-angle waveguide and a first horizontal waveguide, and the first right-angle waveguide is connected with the first horizontal waveguide, wherein a first rounded corner is correspondingly formed on an inner side of a right angle of the first right-angle waveguide, and a second rounded corner is correspondingly formed on an outer side of the right angle of the first right-angle waveguide;

the second output branch comprises a second right-angle waveguide tube and a second horizontal waveguide tube, and the second right-angle waveguide tube is connected with the second horizontal waveguide tube, wherein a third fillet is correspondingly formed on the inner side of the right-angle position of the second right-angle waveguide tube, and a fourth fillet is correspondingly formed on the outer side of the right-angle position of the second right-angle waveguide tube;

the first fillet, the second fillet, the third fillet and the fourth fillet are all used for reducing signal reflection in a smooth and gradual change mode.

5. The waveguide power divider of claim 1, wherein the first metal tuner comprises:

the cone frustum comprises a cylindrical structure and a cone frustum structure, wherein the cylindrical structure is connected with the small end of the cone frustum structure, and the diameter of the cylindrical structure is the same as the diameter of the section of the small end of the cone frustum structure.

6. The waveguide power divider of claim 1, wherein the first metal tuner is disposed at a location where a central axis of the first output branch and the second output branch along the length direction intersects a central axis of the first input branch along the length direction.

7. The waveguide power divider of claim 1, wherein the second power splitting body further comprises:

the second metal tuner is arranged on the first-stage one-to-two equal power distribution branch;

a third metal tuner disposed on the one of the second level-to-two equal power distribution branches;

the fourth metal tuner is arranged on the other second-stage two-branch equal power distribution branch;

and the sizes of the second metal tuner, the third metal tuner and the fourth metal tuner are the same.

8. The waveguide power divider of claim 1, wherein a junction of the first level-to-two equal power distribution branch of the second power distribution body and the first output branch of the first power distribution body has a third groove and a fourth groove;

the joint of the input branch and the output branch of one of the second-stage two-way equal power distribution branches is provided with a fifth groove and a sixth groove;

a seventh groove and an eighth groove are arranged at the joint of the input branch and the output branch of the other second-stage two-way equal power distribution branch, wherein the third groove and the fourth groove jointly form a second inductive window, the fifth groove and the sixth groove jointly form a third inductive window, and the seventh groove and the eighth groove jointly form a fourth inductive window;

fillets are correspondingly arranged on the outer side and the inner side of the connecting positions of the two output branches of the first-stage one-to-two-way equal power distribution branch and the right-angle waveguides of the two second-stage one-to-two-way equal power distribution branches;

fillets are correspondingly arranged on the outer side and the inner side of the two right-angle output branches of one of the second-stage two-branch equal-power distribution branches, and fillets are correspondingly arranged on the outer side and the inner side of the two right-angle output branches of the other one of the second-stage two-branch equal-power distribution branches.

9. The waveguide power divider of claim 1, wherein a junction of the first level-one-two-way unequal power dividing branch of the third power dividing body and the second output branch of the first power dividing body has a ninth groove and a tenth groove;

an eleventh groove and a twelfth groove are arranged at the connection position of the input branch and the output branch in the fourth output branch, wherein the ninth groove and the tenth groove jointly form a fifth inductive window, and the eleventh groove and the twelfth groove jointly form a sixth inductive window.

10. The waveguide power splitter of claim 1 wherein the first, second and third power splitting bodies are based on an H-plane T-junction design.