CN108091971B - High-power waveguide chain synthesizer - Google Patents
High-power waveguide chain synthesizer Download PDFInfo
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- CN108091971B CN108091971B CN201711318455.8A CN201711318455A CN108091971B CN 108091971 B CN108091971 B CN 108091971B CN 201711318455 A CN201711318455 A CN 201711318455A CN 108091971 B CN108091971 B CN 108091971B
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- 238000002955 isolation Methods 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 183
- 238000010168 coupling process Methods 0.000 claims description 183
- 238000005859 coupling reaction Methods 0.000 claims description 183
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 15
- 238000003786 synthesis reaction Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012827 research and development Methods 0.000 description 2
- 230000005477 standard model Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/181—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides
- H01P5/182—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides the waveguides being arranged in parallel
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Abstract
The invention provides a high-power waveguide chain synthesizer, which comprises a plurality of directional couplers, wherein the plurality of directional couplers comprise a1 st directional coupler, a 2 nd directional coupler, … … th directional coupler and an n-th directional coupler; the isolation ports of the 1 st directional coupler, the 2 nd directional coupler, … … th directional coupler and the n directional coupler are respectively connected with a short-circuiting device, and the output ports of the 1 st directional coupler, the 2 nd directional coupler, the … … th directional coupler and the n-1 st directional coupler are respectively connected with the input ports II of the 2 nd directional coupler, the … … th directional coupler and the n directional coupler. According to the technical scheme, the isolation ports of the directional couplers are respectively connected with the short-circuiting devices, when the input power of each positioning coupler is unbalanced, reflected power is generated at the ports of the short-circuiting devices, and the reflected power can be absorbed by each transmitter through the high-power waveguide chain synthesizer network, so that matching loads are removed, and the cost is saved.
Description
Technical Field
The invention relates to the field of microwave equipment, in particular to a high-power waveguide chain synthesizer.
Background
Because the power rating of the high power combiner is high, device or chip level combining techniques cannot be used in high power combiners. The technical scheme of the high-power synthesizer mainly comprises a multistage synthesis technology (such as a tree-type or binary synthesizer, a chain synthesizer and the like) and a multipath synthesis technology (such as a resonant synthesizer, a non-resonant synthesizer and the like).
The chain synthesizer belongs to one kind of multistage synthesizer and consists of several cascaded synthesis units. A typical chain synthesizer unit is constituted by a coupler. The largest characteristic of the chain synthesizer is that the synthesis of any path number N can be realized, and N is not limited. Furthermore, if the number of synthetic paths needs to be increased or decreased, only the corresponding synthetic units need to be increased or decreased, which is one of the greatest advantages of the chain synthesizer.
However, in the conventional chain synthesizer, each synthesizing unit needs to be connected with a matching load, when the input of the synthesizer is unbalanced (such as the power of a certain transmitter is reduced or the power of the transmitter is shut down), a part of power is absorbed by the matching load, and the matching loads have large volume and weight and are expensive, so that the application range of the chain synthesizer is limited.
Disclosure of Invention
The invention aims to: the invention aims to provide a high-power waveguide chain synthesizer to solve the technical problem of large volume.
The high-power waveguide chain synthesizer is characterized by comprising a plurality of directional couplers (1), wherein the directional couplers (1) are used for adjusting the coupling degree of the rectangular waveguide directional couplers by adjusting the positions of a main coupling column (14) and an auxiliary coupling column (15) in a sliding groove, the directional couplers (1) are arranged in series, the directional couplers (1) are four-port couplers, the directional couplers (1) comprise a 1 st directional coupler (P1), a2 nd directional coupler (P2), … … and an nth directional coupler (Pn), and the directional couplers (1) comprise an isolation port (2), an input port I (3), an input port II (4) and an output port (5); the isolation ports (2) of the 1 st directional coupler (P1), the 2 nd directional coupler (P2), … … and the n-1 th directional coupler (Pn) are respectively connected with a short-circuit device, the 1 st directional coupler (P1), the 2 nd directional coupler (P2), … … and the input port one (3) of the n-th directional coupler (Pn), the input port two (4) of the 1 st directional coupler (P1) are respectively connected with the output end of each transmitter, the output ports (5) of the 1 st directional coupler (P1), the 2 nd directional coupler (P2), … … and the n-1 th directional coupler (Pn-1) are respectively connected with the input port two (4) of the 2 nd directional coupler (P2), … … and the n-th directional coupler (Pn), and the total power of the output ports (5) of the n-th directional coupler (Pn) is a natural number greater than zero.
According to the technical scheme, the isolation ports of the directional couplers are respectively connected with the short-circuiting devices to form the short-circuiting loop, when the input power of each positioning coupler is unbalanced, reflected power is generated at the ports of the short-circuiting devices, and the reflected power can be absorbed by each transmitter through the high-power waveguide chain synthesizer network, so that no power loss exists, the matched load is removed, the size of the high-power waveguide chain synthesizer is smaller, and the cost is saved.
In one embodiment, n is 1 to 15.
In one embodiment, the directional coupler is a directional coupler with adjustable coupling degree, comprising a coupler shell, a main line waveguide cavity and a branch waveguide cavity are arranged in the coupler shell, the main line waveguide cavity and the branch waveguide 2/6 page cavity are both in a cuboid structure, a coupling window is arranged between the main line waveguide cavity and the branch waveguide cavity, two vertical coupling main columns are arranged at the position of the coupling window, gaps are reserved between the two coupling main columns, and coupling auxiliary columns are respectively arranged in the main line waveguide cavity and the branch waveguide cavity at corresponding positions;
The upper end and the lower end of the coupling main column and the upper end and the lower end of the coupling auxiliary column are respectively arranged on the coupler shell, sliding grooves are formed in the coupler shell near the upper end and the lower end of the coupling main column and the lower end of the coupling auxiliary column, and the coupling main column and the coupling auxiliary column move to preset positions along the matched sliding grooves, so that the coupling degree of the rectangular waveguide directional coupler is adjusted.
According to the technical scheme, the coupling main column and the coupling auxiliary column are arranged, and the positions of the coupling main column and the coupling auxiliary column in the sliding groove are adjusted, so that the coupling degree of the rectangular waveguide directional coupler is adjusted, the condition that one coupling degree needs to correspond to one coupler is avoided, the coupling degree is adjusted according to the requirement, the research and development cost of the high-power waveguide chain synthesizer is lower, and the adaptability is stronger.
In one embodiment, the coupling device further comprises two hollow nuts, wherein the two hollow nuts are respectively positioned on the coupler housing above and below the coupling window, the two hollow nuts are correspondingly arranged up and down, and the hollow nuts extend into the coupler housing or are pulled out from the coupler housing.
According to the technical scheme, the hollow screw cap is arranged, so that performance indexes such as port reflection loss, coupling degree and directivity of the directional coupler can be adjusted by adjusting the depth of the hollow screw cap in the coupler shell, and various performances of the rectangular waveguide directional coupler can be adjusted by matching with the coupling main column and the coupling auxiliary column.
In one embodiment, window separation plates are arranged at two ends of the coupling window in the length direction, and the thickness of each window separation plate is 1-20 mm.
In one embodiment, the coupling auxiliary column includes a coupling auxiliary column one, a coupling auxiliary column two and a coupling auxiliary column three, wherein the coupling auxiliary column one, the coupling auxiliary column two and the coupling auxiliary column three are all located in the main line waveguide cavity or the branch waveguide cavity, and sliding grooves matched with the coupling auxiliary column one, the coupling auxiliary column two and the coupling auxiliary column two are all curved grooves. In one embodiment, the coupling auxiliary column includes two coupling auxiliary columns one, two coupling auxiliary columns two and two coupling auxiliary columns three, the two coupling auxiliary columns one, two coupling auxiliary columns two and two coupling auxiliary columns three are respectively and axisymmetrically arranged with the central line of the width direction of the coupler housing as an axis, and the coupling auxiliary column one is located at a position close to the central line of the width direction of the coupler housing.
In one embodiment, the diameter of the coupling main column is 10-30 mm, and the diameter of the coupling auxiliary column is 10-20 mm. .
The beneficial effects are that: compared with the prior art, the high-power waveguide chain synthesizer has the following advantages:
1. Because the isolating ports of the directional couplers are respectively connected with the short-circuiting devices to form a short-circuiting loop, when the input power of each positioning coupler is unbalanced, reflected power is generated at the ports of the short-circuiting devices, and the reflected power can be absorbed by each transmitter through the high-power waveguide chain synthesizer network, and the matching load is removed, so that the volume of the high-power waveguide chain synthesizer is smaller, and the cost is saved.
2. The coupling main column and the coupling auxiliary column are arranged, and the positions of the coupling main column and the coupling auxiliary column in the sliding groove are adjusted, so that the coupling degree of the rectangular waveguide directional coupler is adjusted, the condition that one coupling degree needs to correspond to one coupler is avoided, the coupling degree is adjusted according to the requirement, the research and development cost of the high-power waveguide chain synthesizer is lower, and the adaptability is stronger.
Drawings
FIG. 1 is a schematic block diagram of a high-power waveguide chain synthesizer of embodiment 1;
Fig. 2 is a schematic structural diagram of a directional coupler of embodiment 1;
FIG. 3 is a schematic block diagram of a high-power waveguide chain synthesizer of embodiment 2;
FIG. 4 is a schematic block diagram of a high-power waveguide chain synthesizer of embodiment 3;
Fig. 5 is a schematic diagram of a high-power waveguide chain synthesizer according to embodiment 4.
Detailed Description
Example 1
Referring to fig. 1, a high-power waveguide chain synthesizer includes a plurality of directional couplers 1, where the directional couplers 1 are serially connected, the directional couplers 1 are four-port couplers, and the directional couplers 1 include a1 st directional coupler P1, a 2 nd directional coupler P2, … …, and an nth directional coupler Pn. Wherein n is a natural number greater than zero. In this embodiment, n is 7. The directional coupler 1 has 7 total directional couplers. The directional coupler 1 comprises an isolation port 2, an input port 3, an input port 4 and an output port 5.
The isolation ports 2 of the 1 st directional coupler P1, the 2 nd directional coupler P2, … … and the n directional coupler Pn are respectively connected with a short-circuiting device (not shown in the figure), the input ports I3 of the 1 st directional coupler P1, the 2 nd directional coupler P2, … … and the n directional coupler Pn are respectively connected with the output ends of the transmitters, the output ports 5 of the 1 st directional coupler P1, the 2 nd directional coupler P2, … … and the n-1 th directional coupler Pn-1 are respectively connected with the input ports II 4 of the 2 nd directional coupler P2, … … and the n directional coupler Pn, and the output port 5 of the n directional coupler Pn is the total power output port.
Referring to fig. 2, the directional coupler 1 is a coupling-adjustable directional coupler, and includes a coupler housing 10, wherein a main waveguide cavity 11, a branch waveguide cavity 12, and two hollow nuts 16 are disposed in the coupler housing 10. The main line waveguide cavity 11 and the branch waveguide cavity 12 are both of cuboid structures, a coupling window 13 is arranged between the main line waveguide cavity 11 and the branch waveguide cavity 12, two vertical coupling main columns 14 are arranged at the position of the coupling window 13, gaps are reserved between the two coupling main columns 14, and coupling auxiliary columns 15 are respectively arranged in the main line waveguide cavity 11 and the branch waveguide cavity 12 at corresponding positions. Coupling auxiliary columns 15 are respectively arranged in the main line waveguide cavity 11 and the branch waveguide cavity 12 at corresponding positions. The two ends of the coupling window 13 in the length direction are provided with window separation plates 17, and the thickness of the window separation plates 17 is 1-20 mm. The diameter of the coupling main column 14 is 10-30 mm, and the diameter of the coupling auxiliary column 15 is 10-20 mm. In this embodiment, the thickness of the window spacer 17 is 8mm, the diameter of the coupling main column 14 is 30mm, and the diameter of the coupling sub-column 15 is 20mm.
In this embodiment, the main line waveguide cavity 11 and the branch waveguide cavity 12 are metal waveguides, and the cavity sizes (without metal wall thickness) of the main line waveguide cavity 11 and the branch waveguide cavity 12 are: the thickness of the metal outer wall of the waveguide tube is 3.81mm, and the width is 391mm and the height is 190.5 mm. The national standard model for waveguides of this size is BJ6 and the international standard model is WR1500. In other embodiments, other types of waveguides may be used for coupling adjustment.
The upper and lower ends of the coupling main column 14 and the upper and lower ends of the coupling auxiliary column 15 are respectively mounted on the upper and lower surfaces of the coupler housing 10, sliding grooves are formed on the upper and lower surfaces of the coupler housing 10 near the upper and lower ends of the coupling main column 14 and the upper and lower ends of the coupling auxiliary column 15, and the coupling main column 14 and the coupling auxiliary column 15 move to a predetermined position along the matched sliding grooves, so that the coupling degree of the rectangular waveguide directional coupler is adjusted.
In this embodiment, the coupling auxiliary column 15 located in the main line waveguide cavity 11 or the branch waveguide cavity 12 includes a first coupling auxiliary column 151, a second coupling auxiliary column 152 and a third coupling auxiliary column 153, and the first coupling auxiliary column 151, the second coupling auxiliary column 152 and the third coupling auxiliary column 153 are located in the main line waveguide cavity 11 or the branch waveguide cavity 12 respectively, and the sliding grooves matched with the first coupling auxiliary column 151, the second coupling auxiliary column 152 and the third coupling auxiliary column 153 are curved grooves. In other embodiments, the sliding grooves matched with the coupling auxiliary columns 15 can be straight grooves or other curved grooves, and the sliding grooves can be set according to actual needs.
Wherein, two hollow nuts 16 are respectively positioned on the coupler housing 10 above and below the coupling window 13, the two hollow nuts 16 are correspondingly arranged up and down, and the hollow nuts 16 extend into the coupler housing 10 or are pulled out from the coupler housing 10. The hollow nut 16 is provided with an adjusting means by which the hollow nut 16 is locked when the hollow nut 16 is moved up and down to a predetermined position, thereby fixing the position of the hollow nut 16. Preferably, the two coupling studs 14 are located on either side of the hollow nut 16. The hollow screw cap 16 comprises a screw cap body and a hollow screw column body arranged on the screw cap body, wherein the diameter of the screw cap body is 120mm, the diameter of a through hole matched with the hollow screw cap 16 on the coupler shell 10 is 100mm, the hollow screw column body is inserted into the through hole, and the distance between the screw cap body of the hollow screw cap and the coupler shell 10 is adjusted by adjusting the position of the hollow screw column body in the through hole.
The coupling auxiliary column 15 in the main line waveguide cavity 11 or the branch waveguide cavity 12 includes two first coupling auxiliary columns 151, two second coupling auxiliary columns 152, and two third coupling auxiliary columns 153, respectively, the two first coupling auxiliary columns 151, the two second coupling auxiliary columns 152, and the two third coupling auxiliary columns 153 are respectively and symmetrically arranged with a center line of the coupler housing 10 in the width direction as an axis, and the first coupling auxiliary column 151 is located at a position close to the center line of the coupler housing 10 in the width direction.
At present, the total output power of ultra-large power source equipment applied to various industries can reach 200KW or even higher. For ultra-large power source devices composed of all-solid-state power amplifier modules, the output power of a single power transmitter often cannot reach such a high level, which requires that the output powers of multiple power transmitters be combined together for use. If the power combiner is designed according to the scheme that the common directional coupler units are cascaded to form the chain combiner, each directional coupler unit needs to be matched with a matching load, and the power of the matching load reaches the output power level of a single power transmitter. Such matched loads often require water-cooled designs, are very bulky and heavy, and are very expensive. For example, a 20kW matching load operating at a frequency of 600MHz, the current market price is around 20 kilo-yuan. Often, a power combiner requires multiple matched loads, which can significantly increase the manufacturing cost of the overall combiner.
In this embodiment, an 8-in-1 power combiner is required for combining, that is, 8 transmitters and 7 directional couplers are required for combining to obtain the target combined power. Wherein, the coupling degree adjusting range of each directional coupler is set to be-13 to-3 dB.
Wherein, the coupling degree of the 1 st directional coupler P1 is adjusted to-3.01 dB, the coupling degree of the 2 nd directional coupler P2 is adjusted to-4.77 dB, the coupling degree of the 3 rd directional coupler P3 is adjusted to-6.02 dB, the coupling degree of the 4 th directional coupler P4 is adjusted to-6.99 dB, the coupling degree of the 5 th directional coupler P5 is adjusted to-7.78 dB, the coupling degree of the 6 th directional coupler P6 is adjusted to-8.45 dB, and the coupling degree of the 7 th directional coupler P7 is adjusted to-9.03 dB. Because the specifications of the 7 directional couplers in the embodiment are the same, the processing cost of the high-power waveguide chain synthesizer can be greatly reduced. In other embodiments, the number of the directional couplers can be increased or decreased according to the requirement of the target synthetic power, so that the operability is strong and the application range is wider.
The working principle of the high-power waveguide chain synthesizer is as follows: according to the requirements of directional couplers at different positions, the coupling degree of the directional coupler at a preset position is obtained by adjusting the positions of a coupling main column 14 and a coupling auxiliary column 15 of the directional coupler and the depths of two hollow nuts 16, and then the output power of each transmitter is sequentially synthesized to obtain target synthesized power, so that the requirements of the whole high-power waveguide chain synthesizer are met.
When the above-mentioned waveguide directional coupler is subjected to simulation to obtain different coupling degrees, the positional relationship table of the coupling main column 14 and the coupling auxiliary column 15 is shown in table 1.
TABLE 1 positional relationship Table of Main coupling column and auxiliary coupling column at different coupling degrees in example 1
As can be seen from Table 1, the nut body of the hollow nut can be adjusted in different coupling degrees by adjusting the positions of the coupling main column, the coupling auxiliary column and the nut body, and the operation is simple and convenient. According to the positions of the coupling main column and the coupling auxiliary column corresponding to other coupling degree values in-13 to-3 dB in the coupling degree adjusting range in the table 1, the positions of the coupling main column and the coupling auxiliary column can be obtained through linear interpolation of the position values of the integer coupling degrees in the table 1. In table 1, the distance between the first coupling sub-column and the longitudinal center line is the distance between the first coupling sub-column and the longitudinal center line of the coupler housing 10, and the second coupling sub-column and the third coupling sub-column are also reference lines with respect to the longitudinal center line of the coupler housing 10.
The coupling degree requirements of the other directional couplers are adjusted by the same method, so that the coupling degree of the directional couplers reaches a preset value, and the input power of the transmitter can be completely adjusted by controlling the input power of the transmitter, so that the power is synthesized, and the target synthesized power is achieved.
Example 2
Referring to fig. 3, the difference between the present embodiment and embodiment 1 is that: n is 1, and a total of 2 transmitters and 1 directional coupler are required.
In this embodiment, the high-power fluctuation chain synthesizer is used for two-way power synthesis. The output ends of the 2 transmitters are respectively connected with an input port I3 and an input port II 4 of the 1 st directional coupler P1, an isolation port 2 of the directional coupler P1 is connected with a short-circuiting device, and an output port 5 of the 1 st directional coupler P1 is a total power output port with double power.
The coupling degree of the 1 st directional coupler P1 is adjusted to-3.01 dB, then 2 transmitters are turned on, and meanwhile, the preset power is input for power synthesis, and the power synthesis process can be completed.
Example 3
Referring to fig. 4, the difference between the present embodiment and embodiment 1 is that: n is 3, a total of 4 transmitters and 3 directional couplers are required.
In this embodiment, the high-power fluctuation chain synthesizer is used for four-way power synthesis. The coupling degree of the 1 st directional coupler P1 is adjusted to-3.01 dB, the coupling degree of the 2 nd directional coupler P2 is adjusted to-4.77 dB, the coupling degree of the 3 rd directional coupler P3 is adjusted to-6.02 dB, 4 transmitters are turned on, and meanwhile, preset power is input for power synthesis, so that the power synthesis process can be completed.
Example 4
Referring to fig. 5, the difference between the present embodiment and embodiment 1 is that: n is 15, and a total of 16 transmitters and 15 directional couplers are required. In this embodiment, the thickness of the window spacer is 8mm.
In this embodiment, a high power ripple chain synthesizer for sixteen-way power synthesis is provided. Wherein the coupling degree of the 1 st directional coupler P1 is adjusted to-3.01 dB, the coupling degree of the 2 nd directional coupler P2 is adjusted to-4.77 dB, the coupling degree of the 3rd directional coupler P3 is adjusted to-6.02 dB, the coupling degree of the 4th directional coupler P4 is adjusted to-6.99 dB, the coupling degree of the 5th directional coupler P5 is adjusted to-7.78 dB, the coupling degree of the 6 th directional coupler P6 is adjusted to-8.45 dB, the coupling degree of the 7 th directional coupler P7 is adjusted to-9.03 dB, the coupling degree of the 8 th directional coupler P8 is adjusted to-9.54 dB, the coupling degree of the 9 th directional coupler P9 is adjusted to 10.00dB, the coupling degree of the 10 th directional coupler P10 is adjusted to-10.41 dB, the coupling degree of the 11 th directional coupler P11 is adjusted to-10.79 dB, the coupling degree of the 12 th directional coupler P12 is adjusted to-11.14 dB, the coupling degree of the 13 th directional coupler P13 is adjusted to-11.46 dB, the coupling degree of the 14 th directional coupler P14 is adjusted to-11.76 dB, the coupling degree of the 15 th directional coupler P15 is adjusted to-12.04 dB, 16 transmitters are turned on, preset power is input at the same time, and power synthesis is carried out, so that the successful synthesis procedure can be completed.
In this embodiment, since the coupling degree of the last stage of directional coupler is smaller, and the accuracy of the required coupling degree is very high, it is difficult to achieve in terms of technology, but in theory, n can be infinite, so long as the required coupling degree can be achieved and the required accuracy can be achieved, the synthesis of infinite directional couplers can be achieved, and the synthesis of power can be achieved.
Claims (8)
1. The high-power waveguide chain synthesizer is characterized by comprising n directional couplers (1), wherein each directional coupler (1) comprises a coupler shell (10), a main line waveguide cavity (11) and a branch waveguide cavity (12) are arranged in each coupler shell (10), a coupling window (13) is arranged between each main line waveguide cavity (11) and each branch waveguide cavity (12), two vertical coupling main columns (14) are arranged at the position of each coupling window (13), gaps are reserved between the two coupling main columns (14), coupling auxiliary columns (15) are symmetrically arranged in each main line waveguide cavity (11) and each branch waveguide cavity (12) by taking the central line of the width direction of each coupler shell (10) as an axis, the upper end and the lower end of each coupling main column (14) and the upper end and the lower end of each coupling auxiliary column (15) are respectively arranged on the upper surface and the lower surface of each coupler shell (10), the upper end and the lower end of each coupling auxiliary column (14) are adjacent to each coupler shell (10), the upper surfaces and the lower surfaces (10) of the coupling auxiliary columns (15) are respectively provided with a rectangular coupling groove, the directional coupler is arranged in each directional coupler (1, the directional coupler is connected in a series, the directional coupler is arranged in each directional coupler groove (1), the n directional couplers (1) comprise a 1 st directional coupler (P1), a 2 nd directional coupler (P2), … … and an n directional coupler (Pn), wherein the directional coupler (1) comprises an isolation port (2), an input port I (3), an input port II (4) and an output port (5); the isolation ports (2) of the 1 st directional coupler (P1), the 2 nd directional coupler (P2), … … and the n-1 th directional coupler (Pn) are respectively connected with a short-circuiting device, the 1 st directional coupler (P1), the 2 nd directional coupler (P2), … … and the input port one (3) of the n-th directional coupler (Pn), the input port two (4) of the 1 st directional coupler (P1) are respectively connected with the output end of each transmitter, and the output ports (5) of the 1 st directional coupler (P1), the 2 nd directional coupler (P2), … … and the n-1 th directional coupler (Pn-1) are respectively connected with the input port two (4) of the 2 nd directional coupler (P2), … … and the n-th directional coupler (Pn), and the total power of the output ports (5) of the n-th directional coupler (Pn) is the output port.
2. A high power waveguide chain combiner according to claim 1, wherein n is a natural number greater than zero.
3. A high power waveguide chain combiner according to claim 1, characterized in that the main waveguide cavity (11) and the branch waveguide cavity (12) are both of cuboid structure.
4. A high power waveguide chain combiner according to claim 1, wherein the directional coupler (1) further comprises two hollow nuts (16), the two hollow nuts (16) are respectively located on the coupler housing (10) above and below the coupling window (13), the two hollow nuts (16) are correspondingly arranged above and below, and the hollow nuts (16) extend into the coupler housing (10) or are extracted from the coupler housing (10).
5. The high-power waveguide chain synthesizer according to claim 1, wherein the coupling auxiliary column (15) comprises a coupling auxiliary column one (151), a coupling auxiliary column two (152) and a coupling auxiliary column three (153), and the coupling auxiliary column one (151), the coupling auxiliary column two (152) and the coupling auxiliary column three (153) are all located in the main waveguide cavity (11) or the branch waveguide cavity (12), and sliding grooves matched with the coupling auxiliary column one (151), the coupling auxiliary column two (152) and the coupling auxiliary column two (152) are curved grooves.
6. The high-power waveguide chain synthesizer according to claim 5, wherein the coupling auxiliary column (15) comprises two coupling auxiliary columns one (151), two coupling auxiliary columns two (152) and two coupling auxiliary columns three (153), the two coupling auxiliary columns one (151), the two coupling auxiliary columns two (152) and the two coupling auxiliary columns three (153) are respectively arranged with a central line of the coupler housing (10) in the width direction as an axisymmetric mode, and the coupling auxiliary column one (151) is located at a position close to the central line of the coupler housing (10) in the width direction.
7. A high power waveguide chain combiner according to claim 1, wherein the diameter of the coupling main column (14) is 10-30 mm and the diameter of the coupling auxiliary column (15) is 10-20 mm.
8. A high power waveguide chain synthesizer according to claim 1, characterized in that the coupling window (13) is provided with window spacers (17) at both ends in the length direction, the thickness of the window spacers (17) being 1-20 mm.
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