CN111952706A - A compact waveguide hybrid synthesis network - Google Patents

Abstract

A compact waveguide hybrid synthesis network, characterized in that it includes: a waveguide H-T junction; a magic T, a pair of which is symmetrically connected to the branch input ends of the waveguide H-T junction; and a waveguide E-T junction , there are two pairs, which are symmetrically connected to the branch input terminals of the magic T. Specifically include: H-arm output waveguide, H-arm output graded waveguide, H-arm matching structure, H-arm branch graded waveguide, T-branch steering waveguide, Magic T-branch graded waveguide, Magic T four-port matching structure, Magic T load port graded waveguide , probe structure, magic T branch steering waveguide, E-arm matching structure, E-arm input waveguide and assembly cavity. The Magic T is integrated between the waveguide H-T junction and the waveguide E-T junction. The waveguide H-T junction adopts a standard waveguide port, and the waveguide E-T junction adopts a non-standard waveguide port to realize multi-channel non-standard waveguide port input, standard Waveguide port output, low insertion loss, wide working bandwidth, good amplitude and phase balance, small volume, convenient processing and strong practicability.

Description

A compact waveguide hybrid synthesis network

technical field

The invention belongs to the field of communication, relates to a waveguide synthesis/microwave power division technology, and in particular relates to a compact waveguide hybrid synthesis network.

Background technique

Waveguide synthesis is a power synthesis method widely used in microwave systems. Its function is to combine multiple powers to obtain greater power. The performance of the composite network, such as insertion loss, isolation, phase balance and amplitude balance, will have a greater impact on the performance of the entire system.

The conventional T-junction is a three-port network, and there is no isolation between stages. When power synthesis is performed, the inter-stage influence is greater; especially when multi-channel waveguide input is required for power synthesis, most of them have large losses, and the amplitude and phase are balanced. In addition, the existing method needs to realize multiple input, the structure is complex and bulky, and it is not easy to process and shape, and the applicability is greatly reduced.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned deficiencies in the related prior art, the present invention provides a compact waveguide hybrid synthesis network, which integrates the magic T between the waveguide H-T junction and the waveguide E-T junction, where the waveguide H-T junction adopts a standard waveguide port, and the waveguide E-T junction adopts a non-standard The waveguide port realizes multi-channel non-standard waveguide port input and standard waveguide port output, low insertion loss, wide working bandwidth, good amplitude and phase balance, reduced volume, and convenient processing and strong practicability.

In order to realize the purpose of the present invention, the following scheme is proposed:

A compact waveguide hybrid synthesis network, characterized in that it includes integrated:

Waveguide H-T junction;

Magic T, with a pair, symmetrically connected to the branch input of the waveguide H-T junction; and

There are two pairs of waveguide E-T junctions, which are symmetrically connected to the branch input ends of the magic T;

The input end of the waveguide E-T junction adopts a non-standard waveguide port, and the output end of the waveguide H-T junction adopts a standard waveguide port.

Further, the waveguide E-T junction, including:

A pair of E-arm input waveguides arranged at a symmetrical interval, and the E-face adopts a non-standard waveguide port, which is used as a radio frequency signal input end; and

The E-arm spacer structure is arranged between a pair of E-arm input waveguides, and is used for the first power synthesis of the radio frequency signal input from the E-arm input waveguides.

Further, magic T, including:

Magic T branch steering waveguide, there are a pair, symmetrically arranged, one end of which is connected to the E-arm spacer structure, which is used to 90° turn the RF signal synthesized by the E-arm spacer structure through the step transition method, which is used to make the radio frequency entering the magic T. Signal branches are in the same direction;

Magic T-branch gradient waveguides, with a pair, symmetrically arranged, respectively connected to the other end of the corresponding magic T-branch steering waveguide to increase the working bandwidth; and

Magic T four-port matching structure, a pair of magic T-branch gradient waveguides are symmetrically connected to both sides of the magic-T four-port matching structure, used to match the signal power distribution ratio and isolation in the T-shaped coupling cavity together with the magic T-branch gradient waveguide. Do a second power synthesis.

Further, the shaded part of the magic T four-port matching structure adopts a stepped square column structure, the top surface is facing the direction of the port on the E surface, and the bottom surface is located in the opposite direction of the port on the E surface.

Further, the Magic T four-port matching structure is provided with a load module vertically and vertically to absorb multi-channel unbalanced power; the side of the load module facing the direction of the port facing the E surface is provided with a Magic T load port gradient waveguide for matching. The standing wave at the load port.

The side of the load module facing the other magic T is provided with a probe structure. The probe structure includes:

a probe substrate; and

Load resistor sintered on one side of the load module together with the probe substrate.

Further, the waveguide H-T junction, including:

The T-shaped branch steering waveguide has a pair, symmetrically arranged, one end of which is respectively connected to the magic T four-port matching structure corresponding to the magic T, which is used to turn the RF signal synthesized by the magic T by 90°, so that the RF signal entering the H-T junction of the waveguide branches. in the same direction;

There are a pair of H-arm branched gradient waveguides, which are symmetrically arranged, and are respectively connected to the other end of the corresponding T-shaped branch steering waveguide to increase the working bandwidth;

H-arm spacer structure, a pair of H-arm branched gradient waveguides are symmetrically connected on both sides of the H-arm spacer structure, and are used for the third synthesis of the radio frequency signals transmitted by each magic T; and

The H-arm output waveguide is vertically connected to the H-arm spacer structure through the H-arm output gradient waveguide for outputting the RF signal synthesized for the third time. The H-plane of the H-arm output waveguide adopts a standard waveguide port.

Further, the waveguide E-T junction is vertically arranged, a pair of E-arm input waveguides are arranged vertically spaced up and down, and the E-arm spacer structure is located between the E-arm input waveguides,

The magic T-branch steering waveguide is horizontally and vertically connected to the E-arm spacer structure, and the magic-T-branch steering waveguide is in the opposite direction to the E-plane port of the E-arm input waveguide;

H-arm output waveguide, H-arm output graded waveguide, H-arm spacer structure, H-arm branched graded waveguide, T-branch steering waveguide, Magic T-branch graded waveguide, and Magic T four-port matching structure are all in the same position as the Magic T-branch steering waveguide. the same level.

Further, it also includes:

The cavity is used to accommodate the integrated waveguide H-T junction, a pair of magic T junctions, and two pairs of waveguide E-T junctions. shape matching;

The cavity has an output port vertically arranged on one side in the length direction of the cavity, and four input ports with a predetermined distance from the other side and penetrating the top and bottom surfaces of the cavity; the output ports are matched with the H-arm output waveguide, and the input ports are The E-arm input waveguide for the E-T junction of the waveguide protrudes from the top and bottom surfaces of the cavity;

The top surface of the cavity is provided with two load cavities for accommodating the load module and the probe structure.

The beneficial effects of the present invention are:

1. The magic T is integrated between the waveguide H-T junction and the waveguide E-T junction. The waveguide H-T junction adopts a standard waveguide port, and the waveguide E-T junction adopts a non-standard waveguide port to realize multi-channel non-standard waveguide port input and standard waveguide port output. X-band 1.6GHz bandwidth power synthesis; at the same time, the input port is a non-international standard rectangular waveguide port, and the vertical signal feeding up and down the input port is realized, which is conducive to reducing the size of the input port and further miniaturizing the overall synthesis network size. , reduce the volume and weight; the output port is an international standard waveguide port, and there is no need to redesign the non-standard waveguide port to the standard waveguide port;

2. The probe structure absorbs the load. This absorbing load adopts the microstrip probe method for power coupling and power absorption through a 50 ohm resistor. It is used as a general standard waveguide load to replace the traditional waveguide load. It has the characteristics of convenient design and strong versatility. . The microstrip probe can also be replaced by a coaxial probe, which achieves the same principle and can effectively reduce the volume;

3. It ensures the isolation between the four-way branches after the eight-way synthesis, and at the same time realizes the advantages of low insertion loss, wide working bandwidth, and good amplitude and phase balance; at the same time, it is easy to process, and the matching structure and magic T can be milled at one time. Can be processed to meet actual engineering needs;

4. The split-cavity design is adopted, the magic T matching structure is designed in the lower cavity, the gradient structure is designed in the upper cavity, the load cavity is an independent structure, and a 0.05mm boss is designed on the contact surface of the upper cavity and the lower cavity to ensure the tightness of the upper and lower cavities. Combined; the hybrid synthesis network structure is suitable for the installation of the upper and lower layers of the miniaturized power amplifier module, and can meet various forms of heat dissipation;

5. The X-band waveguide hybrid synthesis network of the present invention has a simple structure, good impedance matching of each port, the insertion loss of the eight-way branch is less than 0.3dB, the isolation between the four-way branches after synthesis is greater than 17dB, and has a wider working bandwidth.

Description of drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the application.

FIG. 1 shows a schematic structural diagram of a synthesis network according to an embodiment of the present application.

FIG. 2 shows a cavity structure diagram 1 of an embodiment of the present application.

FIG. 3 shows a second cavity structure diagram of an embodiment of the present application.

FIG. 4 shows the insertion loss characteristic curve and the output port return loss characteristic curve of the eight-way branch according to the embodiment of the present application.

FIG. 5 shows the isolation degree between the E-T junctions and the isolation degree curve between the four output ports after synthesis according to the embodiment of the present application.

FIG. 6 shows the return loss curve of the Magic T isolated end according to the embodiment of the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the embodiments described in the present invention are a part of the embodiments of the present invention, not all of the embodiments. .

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

It should be noted in the description of the present invention that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in use, which is only for the convenience of describing the present invention and simplifying the description. The terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance. The terms "parallel," "perpendicular," etc. do not imply that components are required to be absolutely parallel or perpendicular, but rather may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example

As shown in FIG. 1 , a compact waveguide hybrid synthesis network provided in this example includes: a waveguide H-T junction, a magic T junction, and a waveguide E-T junction integrated in one. The magic T has a pair, which is symmetrically connected to the branch input end of the waveguide H-T junction; the waveguide E-T junction has two pairs, which are symmetrically connected to the branch input end of the magic T; the input end of the waveguide E-T junction adopts a non-standard waveguide port, and the waveguide H-T junction The output uses a standard waveguide port.

Non-standard waveguide ports have the same size and opposite positions.

Specifically, the waveguide hybrid synthesis network of this example includes:

H-arm output waveguide 1, H-arm output graded waveguide 2, H-arm matching structure 3, H-arm branch graded waveguide 4, T-branch steering waveguide 5;

Magic T branch gradient waveguide 6, magic T four-port matching structure 7, magic T load port gradient waveguide 8, probe structure 9, magic T branch steering waveguide 10;

E-arm matching structure 11 and E-arm input waveguide 12 .

Wherein, as shown in FIG. 1 , the waveguide E-T junction includes: an E-arm spacer structure 11 and a pair of E-arm input waveguides 12 arranged at symmetrical intervals. The E surface of the E-arm input waveguide 12 adopts a non-standard waveguide port, which is used as the input end of the radio frequency signal; The input RF signal undergoes the first power synthesis.

As shown in FIG. 1 , the magic T includes: a magic T branched gradient waveguide 6 , a magic T four-port matching structure 7 , a magic T load port gradient waveguide 8 , a probe structure 9 , and a magic T branch steering waveguide 10 .

The magic T branch steering waveguide 10 has a pair, which are symmetrically arranged, one end of which is connected to the E-arm spacer structure 11, and is used to 90° turn the radio frequency signal synthesized by the E-arm spacer structure 11 through the step transition method, so as to make it enter the magic T The RF signal branches in the same direction. There are a pair of magic T-branch gradient waveguides 6, which are symmetrically arranged, and are respectively connected to the other ends of the corresponding magic T-branch steering waveguides 10, so as to increase the working bandwidth. A pair of magic T-branched graded waveguides 6 are symmetrically connected to both sides of the magic-T four-port matching structure 7 for matching the signal power distribution ratio and isolation in the T-shaped coupling cavity together with the magic T-branched graded waveguides 6 for the second time. Power synthesis.

Specifically, the magic T four-port matching structure 7 is located in the center of the four-port network by means of a stepped square column, the top surface of the stepped matching square column faces the direction of the E-plane port, and the bottom surface of the stepped matching square column is located in the opposite direction of the E-plane port. . In this way, the step-matching square column is arranged to facilitate impedance matching for the signal power distribution ratio and isolation in the T-shaped coupling cavity. At the same time, the E-side port uses a microstrip probe structure to connect a 50-ohm resistor to absorb the unbalanced power.

The Magic T four-port matching structure 7 is provided with a load module vertically and vertically for absorbing multi-channel unbalanced power; the side of the load module facing the direction of the port facing the E surface is provided with a Magic T load port gradient waveguide 8 for matching The standing wave at the load port.

The side of the load module facing the other magic T is provided with a probe structure 9, and the probe structure 9 includes: a probe substrate; and a load resistor sintered on one side of the load module together with the probe substrate.

As shown in FIG. 1 , the waveguide H-T junction includes: H-arm output waveguide 1 , H-arm output graded waveguide 2 , H-arm matching structure 3 , H-arm branch graded waveguide 4 , and T-branch steering waveguide 5 .

There is a pair of T-shaped branch steering waveguides 5, which are symmetrically arranged, and one end of which is respectively connected to the magic T four-port matching structure 7 corresponding to the magic T, which is used to turn the radio frequency signal synthesized by the magic T by 90°, so that the RF signal entering the H-T junction of the waveguide is The branches are in the same direction; there are a pair of H-arm branched graded waveguides 4, which are arranged symmetrically, and are respectively connected to the other ends of the corresponding T-shaped branched steering waveguides 5 to increase the working bandwidth; a pair of H-arm branched graded waveguides 4 are symmetrically connected to the H-arm The two sides of the spacer structure 3 are used for the third synthesis of the radio frequency signals transmitted by each magic T; the H-arm output waveguide 1 is vertically connected to the H-arm spacer structure 3 through the H-arm output gradient waveguide 2 for outputting the third For the second synthesized radio frequency signal, the H surface of the H arm output waveguide 1 adopts a standard waveguide port.

Specifically, the magic-T branch steering waveguide 10 and the magic-T-branch gradient waveguide 6 adopt a stepped structure, and in the direction of the magic-T four-port matching structure 7, there is a step-down trend.

Specifically, the T-shaped branch steering waveguide 5 and the H-arm branched gradient waveguide 4 adopt a stepped structure, and the direction of the H-arm spacer structure 3 shows a step-up trend.

Specifically, the H-arm output graded waveguide 2 adopts a stepped structure, and the direction from the H-arm spacer structure 3 to the H-arm output waveguide 1 presents a step-up trend.

The specific space and structural layout are designed as:

The waveguide E-T junction is vertically arranged, a pair of E-arm input waveguides 12 are arranged vertically and vertically, the E-arm spacer structure 11 is located between the E-arm input waveguides 12, and the magic T-branch steering waveguide 10 is horizontally and vertically connected to the E-arm Spacer structure 11, magic T-branch steering waveguide 10 is in the opposite direction to the E-plane port of the E-arm input waveguide 12; H-arm output waveguide 1, H-arm output gradient waveguide 2, H-arm spacer structure 3, H-arm branch gradient The waveguide 4 , the T-branch steering waveguide 5 , the magic-T-branch gradient waveguide 6 , and the magic-T four-port matching structure 7 are all on the same level as the magic-T-branch steering waveguide 10 .

On this basis, the cavity 13 shown in FIGS. 2 to 3 is used to accommodate the synthetic network described in this example. The cavity 13 includes an upper cavity 15 and a lower cavity 16 , and the synthetic network is assembled between the upper cavity 15 and the lower cavity 16 . Specifically, a 0.05mm boss is designed on the contact surface of the upper cavity 15 and the lower cavity 16 to ensure that the upper and lower cavities are tightly combined during assembly.

The shape of the cavity 13 matches the overall shape of the integrated waveguide H-T junction, a pair of magic T junctions, and two pairs of waveguide E-T junctions; On the other side, there are four input ports 18 penetrating the top and bottom surfaces of the cavity 13 with a predetermined distance; the output port 14 is matched with the H-arm output waveguide 1, and the input ports 18 are used for the E-arm input waveguide 12 of the E-T junction of the waveguide. Protruding from the top and bottom surfaces of the cavity 13 , that is, the E-arm input waveguides 12 protrude from the input ports 18 of the upper cavity 15 and the lower cavity 16 , respectively. The top surface of the cavity 13 is provided with two load cavities 17 for accommodating the load module and the probe structure 9 .

In this way, the assembly of the synthetic network is accomplished. The hybrid synthesis network structure is suitable for the installation of the upper and lower layers of the miniaturized power amplifier module, and can satisfy various forms of heat dissipation.

How it works:

In order to avoid the 180° phase difference of the E-T junction, a symmetric waveguide hybrid synthesis network is used, the phase differences can cancel each other, and the signals can be fed from the upper and lower eight E-plane non-standard waveguide ports at the same time, and then pass through the E-arm spacer structure 11. For the first power synthesis, the spacer can effectively improve the power distribution between the two circuits.

Further, the signal after the first power synthesis is turned to the waveguide 10 through the magic T branch, and is processed into a 90° corner structure by means of step transition, so that the magic T four branches are in the same direction, which is convenient for the compact installation of the power amplifier module. At the same time, the step design makes the corner transmission characteristics reach the optimal state.

Further, after the signal turns 90° through the H plane, the synthesized four-way signal enters the Magic T-branch gradient waveguide 6 and the Magic T four-port matching structure 7. The Magic T-branch gradient waveguide 6 can increase its working bandwidth, and at the same time, it is compatible with the magic T-branch gradient waveguide 6. The T four-port matching structure 7 matches the signal power distribution ratio and isolation in the T-shaped coupling cavity together. The magic T four-port matching structure 7 adopts the top surface of the stepped square column facing the direction of the E surface port, and the bottom surface of the stepped matching square column is located in the opposite direction of the E surface port. The magic T four-port matching structure 7 is a two-stage structure for easy processing, and the side length of the square column decreases sequentially from the bottom to the top. The stepped square column design effectively increases the impedance matching bandwidth of the matching square column, and improves the port isolation and port standing wave characteristics. The E-face port is also designed with a graded waveguide, which can further improve the standing wave of the E-face port.

The E-plane port is used to absorb the unbalanced power. The traditional absorption power uses a waveguide load, which is large in size, which is not conducive to miniaturized design. In this example, the probe structure 9 uses a probe coupling method to connect to a 50 ohm resistor for power absorption. The design of miniaturization and integration is facilitated by sintering the probe substrate and the load resistor on the cavity wall. The probe structure is an independent design structure, and the withstand power of the 50 ohm resistor can be adjusted according to the power absorbed by the port.

Further, the signal after the second power synthesis is turned to the waveguide 5 through the T-shaped branch, and is processed into a 90° corner structure by the step-over method again. The H-T-type power divides two branches in the same direction, which is convenient for eight power amplifier modules. It can be compactly installed at equal intervals, while the stepped design optimizes the corner transmission characteristics.

Further, after the signal is turned 90° through the H-plane, the synthesized two-way signals enter the H-arm branched gradient waveguide 4, pass through the H-arm spacer structure 3, and perform final power synthesis, and finally output the gradient waveguide 2, through the H-arm. The H-arm output waveguide 1 is output. The eight-channel combined power output of 1.6GHz bandwidth in the X-band is realized, and it has excellent index performance.

Figure 4 shows the insertion loss characteristic curve and the output port return loss characteristic curve of this example.

Figure 5 shows the isolation between the E-T junctions and the isolation curve between the four output ports after synthesis.

Figure 6 is the return loss curve of the magic T isolated end of this example.

The X-band waveguide hybrid synthesis network in this example has a simple structure, good impedance matching of each port, the insertion loss of the eight branches is less than 0.3dB, the isolation between the four branches after synthesis is greater than 17dB, and has a wide working bandwidth.

The hybrid synthesis network of this embodiment can be applied to a multi-channel waveguide power amplifier/combining network, and has a simple structure, small size, and wide coverage frequency. After the cavity is divided, the matching structure and the magic T can be processed by one-time milling. It reduces the assembly error when assembling the matching results, and adopts the step-shaped 90-degree corner method to make the structure of the synthesis network more compact, and the phase and amplitude balance of the output port is very good, and there is good isolation between the isolated ports. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to be the only ones or to limit the present invention. Those skilled in the art should understand that, without departing from the scope of the present invention, various changes or equivalent substitutions made to the present invention all belong to the protection scope of the present invention.

Claims (10)

1. A compact waveguide hybrid synthesis network, comprising, integrated in one:

a waveguide H-T junction;

the pair of magic T is symmetrically connected with the branch input ends of the waveguide H-T junction; and

and two pairs of waveguide E-T junctions are respectively and symmetrically connected with the branch input ends of the magic T.

2. The compact hybrid waveguide network as in claim 1, wherein the input end of the E-T junction is a non-standard waveguide port and the output end of the H-T junction is a standard waveguide port.

3. The compact waveguide hybrid network of claim 1, wherein the waveguide E-T junction comprises:

a pair of E-arm input waveguides (12) which are symmetrically arranged at intervals, wherein the E surface of each E-arm input waveguide adopts a non-standard waveguide port and is used as a radio-frequency signal input end; and

and an E-arm spacer structure (11) which is provided between the pair of E-arm input waveguides (12) and is used for performing first power synthesis on the radio-frequency signals input from the E-arm input waveguides (12).

4. The compact waveguide hybrid combining network of claim 3, wherein magic T comprises:

the pair of magic T branch steering waveguides (10) are symmetrically arranged, one end of each magic T branch steering waveguide is connected with the E-arm spacer structure (11) and used for steering the radio-frequency signals synthesized by the E-arm spacer structure (11) in a 90-degree manner in a step transition manner and enabling the radio-frequency signals entering the magic T to branch in the same direction;

a pair of magic T branch gradual change waveguides (6) are symmetrically arranged and are respectively connected with the other ends of the corresponding magic T branch steering waveguides (10) for increasing the working bandwidth; and

and the pair of magic T branch gradual change waveguides (6) are symmetrically connected to two sides of the magic T four-port matching structure (7) and are used for matching signal power distribution ratio and isolation degree in the T-shaped coupling cavity together with the magic T branch gradual change waveguides (6) so as to carry out secondary power synthesis.

5. The compact waveguide hybrid network according to claim 4, wherein the shadow part in the diagram of the magic T four-port matching structure (7) adopts a stepped square column structure, the top surface faces the direction of the port of the E surface, the bottom surface is opposite to the port of the E surface, and the side length of the stepped square column is gradually reduced from the bottom surface to the top surface.

6. The compact waveguide hybrid network according to claim 4, wherein the magic T four-port matching structure (7) is vertically provided with a load module for absorbing multi-path unbalanced power; and one surface of the load module, facing to the direction of the port of the E surface, is provided with a magic T load port gradual change waveguide (8) for matching the standing wave of the load port.

7. The compact hybrid waveguide network according to claim 6, wherein the load module is provided with a probe structure (9) on its side facing the other magic T, the probe structure (9) comprising:

a probe substrate; and a load resistor sintered on one side of the load module together with the probe substrate.

8. The compact waveguide hybrid network of claim 4, wherein: a waveguide H-T junction, comprising:

the T-shaped branch steering waveguides (5) are provided with a pair of symmetrical waveguides, one end of each pair of symmetrical waveguides is connected with a magic T four-port matching structure (7) corresponding to the magic T respectively and used for steering the radio-frequency signals synthesized by the magic T by 90 degrees so that the radio-frequency signals entering the H-T junction of the waveguides are branched in the same direction;

a pair of H-arm branch gradual change waveguides (4) are symmetrically arranged and are respectively connected with the other ends of the corresponding T-shaped branch steering waveguides (5) for increasing the working bandwidth;

the pair of H-arm branch gradual change waveguides (4) are symmetrically connected to two sides of the H-arm spacer structure (3) and are used for carrying out third synthesis on radio-frequency signals transmitted by the magic Ts; and

the H-arm output waveguide (1) is vertically connected with the H-arm spacer structure (3) through the H-arm output tapered waveguide (2) and is used for outputting the third synthesized radio frequency signal, and a standard waveguide port is adopted by the H surface of the H-arm output waveguide (1).

9. The compact waveguide hybrid network of claim 8, wherein:

the waveguide E-T junction is vertically arranged, a pair of E-arm input waveguides (12) are vertically arranged at intervals in the vertical direction, an E-arm spacer structure (11) is positioned between the E-arm input waveguides (12),

the magic T branch steering waveguide (10) is horizontally and vertically connected with an E arm spacer structure (11), and the magic T branch steering waveguide (10) is positioned in the direction opposite to the direction of an E surface port of the E arm input waveguide (12);

the H-arm output waveguide (1), the H-arm output tapered waveguide (2), the H-arm spacer structure (3), the H-arm branch tapered waveguide (4), the T-shaped branch steering waveguide (5), the magic T branch tapered waveguide (6) and the magic T four-port matching structure (7) are all located on the same horizontal plane with the magic T branch steering waveguide (10).

10. The compact waveguide hybrid network of claim 9, wherein: further comprising:

the cavity (13) is used for accommodating the integrated waveguide H-T junction, the pair of magic T junctions and the two pairs of waveguide E-T junctions, and the shape of the cavity (13) is matched with the overall shape of the integrated waveguide H-T junction, the pair of magic T junctions and the two pairs of waveguide E-T junctions;

the cavity (13) is provided with an output port (14) vertically arranged on one side of the length direction of the cavity (13) and 4 input through ports (18) which are arranged on the other side of the cavity and penetrate through the top surface and the bottom surface of the cavity (13) at a preset distance; the output port (14) is matched with the H-arm output waveguide (1), and the input port (18) is used for enabling the E-arm input waveguide (12) of the waveguide E-T junction to extend out of the top surface and the bottom surface of the cavity (13);

two load cavities (17) are arranged on the top surface of the cavity (13) and used for accommodating the load module and the probe structure (9).

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