CN116632486B - 2-way single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference - Google Patents
2-way single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference Download PDFInfo
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- 230000010363 phase shift Effects 0.000 abstract description 8
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- 230000003321 amplification Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
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- 238000003199 nucleic acid amplification method Methods 0.000 description 4
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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
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to the technical field of power splitters, in particular to a 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure with a 180-degree port phase difference, which comprises an upper cavity and a lower cavity, wherein air cavities between the upper cavity and the lower cavity are symmetrically distributed; the double-ridge waveguide type phase shifting device is characterized in that a double-ridge waveguide port is arranged on one side of the upper cavity, a single-ridge waveguide port is arranged on one side of the lower cavity, a multi-section gradual transition conductor ridge is arranged on one side, close to the single-ridge waveguide port, of the air cavity, and the conversion from the single-ridge waveguide to the double-ridge waveguide is completed at a T-shaped junction position in the air cavity through the multi-section gradual transition of the double-side single-ridge waveguide conductor ridge, so that 180-degree phase shifting of an original signal is realized. Through the structure provided by the invention, the single-ridge waveguide power amplifier module can be interconnected at one end port, and the standard double-ridge waveguide port can be compatible at the other end port, so that the 180-degree phase shift of an original signal can be realized, the in-band second harmonic can be well inhibited, and the binary multi-channel integration can be supported.
Description
Technical Field
The invention relates to the technical field of power splitters, in particular to a 2-way single-ridge-to-double-ridge waveguide power distribution synthesis structure with a 180-degree port phase difference.
Background
The ridge waveguide transmission line can be regarded as being formed by lengthening a wide arm by a rectangular waveguide and then bending part of the wide arm in a convex way at the middle position of the waveguide, and the electromagnetic field transmission mode in the ridge waveguide transmission line is similar to that of the rectangular waveguide, but compared with a common rectangular waveguide, the ridge waveguide transmission line has wider single-mode transmission bandwidth due to lengthening the size of the wide arm, and the limit condition can reach 2-3 octaves.
The ridge waveguide is further subdivided by structural characteristics, and can be divided into a single ridge waveguide and a double ridge waveguide, wherein the difference between the single ridge waveguide and the double ridge waveguide is the number of conductor ridges in the waveguide port.
The output power of the current monolithic MMICs is relatively limited due to basic processing technology and materials, and power synthesis techniques are proposed and rapidly applied in order to achieve higher power module or system level outputs, and to accommodate wider operating frequencies. Correspondingly, a power synthesis scheme based on a ridge waveguide transmission line is also developed and designed step by step; however, at the same time, as the number of composite paths increases, the complexity of processing and assembling is greater and greater due to the complex structure of the double-ridge waveguide, and the double-ridge waveguide is unfavorable for high-path number synthesis and miniaturized stacking, compared with Shan Jibo waveguide, the double-ridge waveguide is more convenient for multi-path synthesis, but the single-ridge waveguide has no completely unified corresponding flange interface standard at present, so that the universality of the module is limited to a certain extent, and in addition, the traditional single-ridge synthesis scheme has the defect of poor second harmonic index.
Disclosure of Invention
The invention aims to provide a 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference, which realizes 180-degree phase shift of an original signal through conversion from a single-ridge waveguide to a double-ridge waveguide so as to solve the problems that the conventional single-ridge synthesis scheme has poor second harmonic index, the common double-ridge waveguide synthesis scheme has complex module interior, and large design/processing/assembly/debugging difficulty, and is unfavorable for high-path number synthesis and miniaturized stacking.
The embodiment of the invention is realized by the following technical scheme: the 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference comprises an upper cavity and a lower cavity, wherein air cavities between the upper cavity and the lower cavity are symmetrically distributed;
the power divider circuit for realizing 180-degree phase shift of an original signal is formed by vertically connecting a conductor ridge T-shaped junction built in the air cavity through the arranged conductor ridge transition steps, and two paths of vertical branch transmission lines of the conductor ridge T-shaped junction extend to power division ends of the two side single-ridge waveguide ports through the conductor ridge transverse and longitudinal transition steps connected with the two side single-ridge waveguide ports.
According to a preferred embodiment, the multi-section gradual transition conductor ridge is composed of a conductor ridge transverse and longitudinal transition step, a conductor ridge transition section and a mode conversion boss, wherein the mode conversion boss is formed by convexly bending the middle position of the conductor ridge.
According to a preferred embodiment, the conductor ridge transverse and longitudinal transition steps consist of a first transition step, a second transition step and a third transition step, wherein the lower surface of the third transition step coincides with the upper surface of the dual ridge waveguide port.
According to a preferred embodiment, an air cavity transition step corresponding to the single-ridge waveguide port is arranged in the air cavity at one side close to the double-ridge waveguide port.
According to a preferred embodiment, the mode conversion boss is a 4-step gradual transition boss.
According to a preferred embodiment, the mode switching boss transitions between steps using one of the steps including, but not limited to, a chamfer, a single chamfer, or a multi-step taper.
The technical scheme of the 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference at least has the following advantages and beneficial effects: through the structure provided by the invention, the single-ridge waveguide power amplifier module can be interconnected at one end port, the integration difficulty of the whole power synthesis is reduced, the standard double-ridge waveguide port can be compatible at the other end port, the conversion from the single-ridge waveguide to the double-ridge waveguide is completed at the T-shaped junction position through the multi-section gradual transition of the double-side single-ridge waveguide conductor ridge in the air cavity, the 180-degree phase shift of an original signal can be realized, the in-band second harmonic has a good inhibition effect, and the binary multi-channel integration can be supported.
Drawings
Fig. 1 is an exploded view of a 2-way single-ridge to double-ridge waveguide power distribution composite structure with a 180 ° port phase difference provided in embodiment 1 of the present invention;
FIG. 2 is a top view of the upper chamber;
FIG. 3 is a bottom view of the upper cavity;
FIG. 4 is a top view of the lower chamber;
FIG. 5 is a bottom view of the lower cavity;
FIG. 6 is a schematic cross-sectional view of a 2-way single-ridge-to-double-ridge waveguide power distribution composite structure with a 180 DEG port phase difference provided in embodiment 1 of the present invention;
FIG. 7 is a diagram of an embodiment power combining scheme;
FIG. 8 is a phase change diagram of an embodiment;
icon: the power amplifier comprises a 1-power amplifier module core module, a 2-single ridge waveguide power distribution synthesis module, a 3-2-path single ridge-to-double ridge waveguide power distribution synthesis structure with a 180-degree port phase difference, a 4-double ridge waveguide double-directional four-port coupler, a 5-cooling fan, a 6-cooling cold plate, a 7-double ridge waveguide-to-coaxial module, an 8-double ridge waveguide port, a 9-air cavity transition step, a 10-conductor ridge transition step, a 11-conductor ridge transverse and longitudinal transition step, a 12-conductor ridge transition section, a 13-mode conversion boss and a 14-single ridge waveguide port.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
The embodiment of the invention provides a 2-way single-ridge-to-double-ridge waveguide power distribution synthesis structure with a port phase difference of 180 degrees, which is shown in fig. 1, and fig. 1 is an exploded view of the 2-way single-ridge-to-double-ridge waveguide power distribution synthesis structure with a port phase difference of 180 degrees provided by the embodiment 1 of the invention. The power distribution synthesis structure specifically comprises an upper cavity and a lower cavity, wherein air cavities between the upper cavity and the lower cavity are symmetrically distributed, and the upper cavity and the lower cavity are connected through fixed mounting holes arranged on the upper cavity and the lower cavity.
In one implementation manner of the embodiment, the double-ridge waveguide port 8 is compatible with a WRD500 standard double-ridge waveguide interface, a single-ridge waveguide port 14 is arranged on one side of the lower cavity, a multi-section gradual transition conductor ridge is arranged on one side, close to the single-ridge waveguide port 14, of the air cavity, the double-ridge waveguide port 8 is vertically connected with a conductor ridge T-shaped junction arranged in the air cavity through a conductor ridge transition step 10, two paths of vertical branch transmission lines of the conductor ridge T-shaped junction extend to power division ends of the single-ridge waveguide ports 14 on two sides through conductor ridge transverse longitudinal transition steps 11 connected with the single-ridge waveguide ports 14 on two sides, and a power divider circuit for realizing 180-degree phase shifting of an original signal is formed; in the embodiment, through multi-section gradual transition of the ridges of the double-side single-ridge waveguide conductor, the conversion from the single-ridge waveguide to the double-ridge waveguide is completed at the T-shaped junction position in the air cavity, and based on the mode change of electromagnetic waves of an electromagnetic field at the T-shaped junction, the waveguide ports at the two sides of the structure have 180-degree port phase difference, so that the 180-degree phase shift of an original signal is realized. The method has the advantages that the degree of inhibition of 90-degree phase shift to the second harmonic is about 3dB, and 180-degree phase shift can completely inhibit the second harmonic theoretically, so that the port phase difference is designed to be 180 degrees, and the method has a good effect of inhibiting the second harmonic in the coverage range of the working frequency band; therefore, the structure is introduced into a power amplification system taking the power synthesis module as a component, so that the second harmonic can be restrained. The description will be made below in connection with the embodiment.
Referring to fig. 7, fig. 7 illustrates a specific application of a single-ridge to double-ridge power splitting/combining structure with 180 ° port phase difference in a power combining system. Specifically, the power synthesis system comprises a power amplification assembly core module 1, a single-ridge waveguide power distribution synthesis assembly 2, a 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure 3 with a 180-degree port phase difference, a double-ridge waveguide double-directional four-port coupler 4, a heat dissipation fan 5, a heat dissipation cold plate 6 and a double-ridge waveguide-to-coaxial assembly 7; the power amplification assembly core module 1 adopts a single-ridge waveguide multiplexing amplifier unit, the single-ridge waveguide power distribution and synthesis assembly 2 is used for matching with an amplifier module to realize power synthesis of chips with more paths, and 2 paths are selected and used here, but the power amplification assembly is not limited to 2 paths; the 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure 3 with 180-degree port phase difference provided by the embodiment is used at the input side of a power amplifier system as a power distributor and at the output side as a synthesizer; the double-ridge waveguide double-directional four-port coupler 4 is used for forward detection and reverse detection; the dual ridge waveguide-to-coaxial assembly 7 serves as a signal input side, with the coaxial termination driving the output signal of the assembly. Fig. 8 shows the phase change of each branch of the rf signal in this application; referring to fig. 8, a signal A0 flows through a component 3 at a power division side from an input end, an original signal is divided into two paths of branch signals with a phase difference of 180 degrees, after the branch signals are amplified by a power amplifier component, the branch signals are synthesized by a 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure 3 with a phase difference of 180 degrees at a synthesis side, so that an A0 is obtained, and in the process of reversely superposing and synthesizing the branch signals, second harmonic waves generated by the operation of a power amplifier in a nonlinear region are counteracted, so that the energy of fundamental wave signals is enhanced, the synthesis loss of a system is reduced, and the stability of the system is enhanced. Compared to the conventional dual-ridge waveguide solution, the application adopts a power amplifier core module based on a single-ridge waveguide, only bottom heat dissipation is needed, and the power amplifier module of the dual-ridge waveguide generally needs double-sided heat dissipation. During system synthesis, the double-ridge waveguide has a complex structure, high processing/stacking difficulty, high cost and high later maintenance workload; the common double-ridge waveguide synthesis scheme does not have the second harmonic suppression effect mentioned in the embodiment, and a filter component is required to be additionally introduced or a special design is required to be made on an internal structure, so that the engineering application is not facilitated.
Referring to fig. 2 to 6, the multi-section gradual transition conductor ridge is composed of a conductor ridge transverse and longitudinal transition step 11, a conductor ridge transition section 12 and a mode conversion boss 13, wherein the mode conversion boss 13 is formed by convexly bending the middle position of the conductor ridge. The transverse and longitudinal transition step 11 of the conductor ridge is positioned at the communication position of the double-ridge waveguide port 8 and the air cavity and consists of a first transition step, a second transition step and a third transition step, wherein the lower surface of the third transition step is overlapped with the upper surface of the double-ridge waveguide port 8. An air cavity transition step 9 corresponding to the single-ridge waveguide port 14 is arranged in the air cavity at one side close to the double-ridge waveguide port 8. The upper cavity is provided with conductor ridge transition steps 10 corresponding to the mode conversion bosses 13, and the number of the conductor ridge transition steps 10 is the same as that of the mode conversion bosses 13. In particular, in one implementation manner of this embodiment, the mode conversion boss 13 is a 4-stage gradual transition boss, and it should be noted that the number of transition sections may be adaptively adjusted according to different frequency range requirements, and the number of transition sections is not specifically limited herein. Further, the transition sections of the conductor ridge in the embodiment are transited in an inclined plane transition mode, and the T-shaped junction of the conductor ridge is transited in an inclined plane transition mode; in addition, the transition modes between the transition sections and at the T-shaped junction of the conductor ridge can be adjusted, modified and deformed, such as multiple beveling steps or multiple gradual steps, but not limited to, the transition modes are not particularly limited herein.
In one implementation of this embodiment, the 2-way single-ridge to double-ridge waveguide power distribution composite structure with a port phase difference of 180 ° has an overall dimension of 105×56×22mm and a weight of 150g or less, and can be directly interconnected with a WRD500 standard flange. In addition, in the frequency range of 6-20GHz, the return loss S11 is smaller than-21 dB, the back-to-back insertion loss S21 is only 0.13dB at maximum, the performance parameters are excellent, the size is small, the weight is light, the structure is simple, and the processing, the assembly and the binary multi-channel integration are convenient. Through prototype measurement, the whole machine with a 2-path single-ridge-to-double-ridge power distribution synthesis structure with 180 DEG port difference is adopted, and in-band second harmonic can be suppressed to minus 25dB to minus 58dB of fundamental wave signals.
In summary, the technical scheme of the 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference in the embodiment of the invention has at least the following advantages and beneficial effects: through the structure provided by the invention, the single-ridge waveguide power amplifier module can be interconnected at one end port, the integration difficulty of the whole power synthesis is reduced, the standard double-ridge waveguide port can be compatible at the other end port, the conversion from the single-ridge waveguide to the double-ridge waveguide is completed at the T-shaped junction position through the multi-section gradual transition of the double-side single-ridge waveguide conductor ridge in the air cavity, the 180-degree phase shift of an original signal can be realized, the in-band second harmonic has a good inhibition effect, and the binary multi-channel integration can be supported.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The 2-path single-ridge-to-double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference is characterized by comprising an upper cavity and a lower cavity, wherein air cavities between the upper cavity and the lower cavity are symmetrically distributed;
the device comprises an upper cavity and a lower cavity, wherein a double-ridge waveguide port (8) is arranged on one side of the upper cavity, a single-ridge waveguide port (14) is arranged on one side of the lower cavity, a plurality of sections of gradual transition conductor ridges are arranged on one side, close to the single-ridge waveguide port (14), of the air cavity, the double-ridge waveguide port (8) is vertically connected with a conductor ridge T-shaped junction arranged in the air cavity through a conductor ridge transition step (10), two paths of vertical branch transmission lines of the conductor ridge T-shaped junction are connected with the conductor ridge transverse and longitudinal transition steps (11) connected with the single-ridge waveguide ports (14) on two sides, and the conductor ridge T-shaped junction extends to the power division ends of the single-ridge waveguide ports (14) on two sides to form a power divider circuit for realizing 180-degree phase shifting of an original signal; the multi-section gradual transition conductor ridge consists of a conductor ridge transverse and longitudinal transition step (11), a conductor ridge transition section (12) and a mode conversion boss (13), wherein the mode conversion boss (13) is formed by convexly bending the middle position of the conductor ridge; the conductor ridge transverse and longitudinal transition step (11) is positioned at the communication position of the double-ridge waveguide port (8) and the air cavity and is composed of a first transition step, a second transition step and a third transition step, wherein the lower surface of the third transition step is overlapped with the upper surface of the double-ridge waveguide port (8).
2. 2-way single-ridge to double-ridge waveguide power distribution synthesis structure with 180-degree port phase difference according to claim 1, characterized in that an air cavity transition step (9) corresponding to a single-ridge waveguide port (14) is arranged in the air cavity at one side close to the double-ridge waveguide port (8).
3. The 2-way single-ridge-to-double-ridge waveguide power distribution synthesis structure with a port phase difference of 180 ° according to claim 1, wherein the mode conversion boss (13) is a 4-order gradual transition boss.
4. A 2-way single-ridge to double-ridge waveguide power distribution composite structure with a port phase difference of 180 ° as claimed in claim 3, wherein the mode conversion boss (13) transitions between steps using one of steps including but not limited to a chamfer, a single chamfer or a multi-stage gradual change step.
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