A high-power power divider with continuously adjustable power distribution ratio

Abstract

The present invention is a high-power power divider with continuously adjustable power distribution ratio, including a main body. It is characterized in that it includes at least three interconnected 3dB couplers, including one 3dB coupler for overall signal input, one 3dB coupler for overall signal output, and one 3dB coupler for phase adjustment. The input of the 3dB coupler for overall signal input includes signal input and load input; the output of the 3dB coupler for overall signal output includes first signal output and second signal output; at least one of the two external ports of the 3dB coupler for phase adjustment is connected to a waveguide short-circuit breaker, and the phase of the waveguide short-circuit breaker is adjustable. The waveguide short-circuit breaker is controlled by a set of servo motor systems, and the movement of the short-circuit surface of the waveguide short-circuit breaker can be controlled manually, electrically, and remotely to realize the function of adjustable output power of the power divider.

Description

Technical Field

[0001] The present invention relates to a high-power power divider with continuously adjustable power distribution ratio. Background Art

[0002] A power divider, also known as a power splitter, can divide a single power signal into two or more power signals, and is widely used in various radio frequency or microwave systems. According to different technical indicators and parameters, power dividers have different classification methods and categories:

[0003] (1) According to the number of output paths of the power divider, power dividers can be divided into two-way power dividers and multi-way power dividers;

[0004] (2) According to the amplitude of each output of the power divider, power dividers can be divided into equal-ratio power dividers and unequal-ratio power dividers;

[0005] (3) According to the phase of each output of the power divider, power dividers can be divided into in-phase output power dividers and out-of-phase output power dividers;

[0006] (4) According to the transmission line structure of the power divider, power dividers can be divided into waveguide power dividers, coaxial transmission line power dividers, suspended stripline power dividers, microstrip line power dividers, etc.

[0007] Among them, the two-way power divider is the most basic form of power divider, and a multi-way power divider can be composed of multiple two-way power divider units. According to whether the amplitudes of the two outputs are the same, the two-way power divider can also be divided into an equal-ratio power divider and an unequal-ratio power divider.

[0008] Waveguide power dividers are common forms of power dividers in high-power radio frequency and microwave systems. The transmission lines they use are in the form of waveguides, and the most common one is the rectangular standard waveguide. Thanks to the characteristics of the waveguide itself, waveguide power dividers have very high rated power levels and extremely low insertion loss indicators. Traditional common two-way waveguide power dividers are roughly divided into power dividers with a distribution ratio of 1:1, 1:2, and 1:3 according to different output amplitudes. Its structure is a T-shaped structure. The signal is input from one end, and the distribution ratio of the two outputs is determined by the node in the power divider. However, since the node in this power divider is fixed and cannot be changed later, it is impossible to adjust a power divider with a certain fixed ratio. However, in some high-power radio frequency and microwave systems, it is required that the high-power two-way power divider has the function of continuously adjustable output power distribution ratio, and the powers of the two outputs of the power divider can be arbitrarily adjusted between 0 - 100%, while traditional power dividers cannot achieve this function.

[0009] The existing adjustable power divider includes a common port, a polarization separator, a planned adjustment motor, and a coupling probe. The end of the coupling probe is connected to the planned adjustment motor, its axis coincides with the axis of the polarization separator, and its tip extends into the left end of the polarization separator. The polarization separator has two horizontally polarized wave outlets perpendicular to each other. This invention realizes the function of adjustable output power of the power divider by rotating the coupling probe without rotating the waveguide.

[0010] At the same time, another existing adjustable power divider includes three power division ports, an inductive element, and an adjustable capacitive element. One end of the inductive element is connected to one end of the adjustable capacitive element, and these two elements are also connected to one end of the input port. The other end of the adjustable capacitive element is connected to one output port, and the inductive element is connected to the other output port. This invention realizes the function of continuously adjusting the output power of the power divider by adjusting the adjustable capacitive element.

[0011] This invention will realize the function of continuously adjustable output power in a completely different principle way from the above two. At the same time, it also has three modes: manual, electric, and remote control, and has a "thermal regulation" function, that is, power adjustment can also be carried out during power transmission. Summary of the Invention

[0012] The purpose of this invention is to solve the deficiencies of the above prior art and provide a high-power power divider with continuously adjustable power distribution ratio.

[0013] A high-power power divider with continuously adjustable power distribution ratio includes at least three interconnected 3dB couplers, including a 3dB coupler for overall signal input, a 3dB coupler for overall signal output, and a 3dB coupler for phase adjustment. The input of the 3dB coupler for overall signal input includes signal input and load input; the output of the 3dB coupler for overall signal output includes first signal output and second signal output; at least one of the two external ports of the 3dB coupler for phase adjustment is connected to a waveguide short-circuit device, and the phase of the waveguide short-circuit device is adjustable, thereby realizing the function of adjustable output power of the power divider.

[0014] The waveguide short-circuit device controls the movement of the short-circuit surface through a servo system, thereby controlling the phase value of the short-circuit point of the waveguide short-circuit device; the servo system includes a servo motor, a slide table, and a lead screw. The output shaft of the servo motor is connected to the short-circuit surface of the waveguide short-circuit device through the lead screw. Therefore, the servo system can be started manually, electrically, or remotely.

[0015] The 3dB coupler includes a first 3dB coupler, a second 3dB coupler, and a third 3dB coupler. Each 3dB coupler has four ports. The first 3dB coupler includes ports 1-1, 1-2, 1-3, and 1-4. The second 3dB coupler includes ports 2-1, 2-2, 2-3, and 2-4. The third 3dB coupler includes ports 3-1, 3-2, 3-3, and 3-4. Among them, 1-1, 1-3, 3-2, and 3-4 are connected in sequence. 1-2, 1-4, 2-1, and 2-3 are connected in sequence. 3-3, 3-1, 2-2, and 2-4 are connected in sequence. Among them, 1-1 is the total signal input terminal, 1-2 is the load input terminal. 3-3 and 3-4 are connected to the waveguide short-circuit breaker. 2-4 is for the output of the first signal, and 2-4 is for the output of the second signal. The ratio of the first signal to the second signal is adjustable. The specific ratio of the first signal to the second signal is n, where n is related to ΔΦ. The specific influence relationship can be obtained through actual operation to get the corresponding comparison relationship table. Among them, ΔΦ = (Φ(2-2) - Φ(1-3)) - (Φ(2-1) - Φ(1-4)), where: Φ(2-2) is the phase value at port 2-2, Φ(1-3) is the phase value at port 1-3, Φ(2-1) is the phase value at port 2-1, and Φ(1-4) is the phase value at port 1-4. The main body is a frame structure. Each 3dB coupler and the waveguide short-circuit breaker are installed inside the frame structure. The load input terminal 1-2 is connected to a waveguide load. Due to the overall structure design, this power divider has a "thermal regulation" function, that is, adjusting the short-circuit surface of the waveguide short-circuit breaker can be carried out in the state where there is power transmission in the system.

[0016] Beneficial effects:

[0017] The present invention includes a waveguide short-circuit breaker, a first 3dB coupler, a second 3dB coupler, and a third 3dB coupler. The waveguide short-circuit breaker is connected to the third 3dB coupler. The third 3dB coupler is connected to the first and second 3dB couplers. The second 3dB coupler is connected to the first 3dB coupler. The short-circuit surface of the waveguide short-circuit breaker is adjustable. Therefore, by adjusting the short-circuit surface of the waveguide short-circuit breaker, the phase of the port can be adjusted, thereby changing the power output ratio of the power divider. At the same time, the waveguide short-circuit breaker also has a set of servo motor system control, which includes a servo motor, a slide table, and a lead screw. It is connected to the waveguide short-circuit breaker through three connecting rods, and the short-circuit surface of the waveguide short-circuit breaker is driven to move through the connecting rods, thereby changing the power output ratio of the power divider. Because of the existence of the servo motor system, the movement of the short-circuit surface of the waveguide short-circuit breaker can be controlled by electric and remote means. In addition, the movement of the short-circuit surface of the waveguide short-circuit breaker can be manually adjusted. And because it is by controlling the movement of the short-circuit surface of the waveguide short-circuit breaker, the present invention has a "thermal regulation" function, that is, it can be adjusted in the state where there is power transmission in the system, and can meet the needs of different occasions.

[0018] The first 3dB coupler, the second 3dB coupler, and the third 3dB coupler each have four ports. The first 3dB coupler includes ports 1-1, 1-2, 1-3, and 1-4. The second 3dB coupler includes ports 2-1, 2-2, 2-3, and 2-4. The third 3dB coupler includes ports 3-1, 3-2, 3-3, and 3-4. This can facilitate the waveguide connection of the entire system, which is intuitive and clear.

[0019] Ports 2-3 and 2-4 are output ports, and their output power distribution ratio is related to ΔΦ, where ΔΦ = (Φ(2-2) - Φ(1-3)) - (Φ(2-1) - Φ(1-4)). In the formula, Φ represents the phase. The power distribution of the two output ports can be controlled by the value of ΔΦ, and the output power distribution ratio of the power divider can be controlled more intuitively and specifically to meet the needs of various occasions. The application frequency of the power divider is not limited. The design method of the power divider is not limited to the transmission line structure, and it has strong applicability and practicability. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a high-power power divider with continuously adjustable power distribution ratio.

[0021] Figure 2 It is a simplified structural diagram of a high-power power divider with continuously adjustable power distribution ratio.

[0022] Figure 3 It is a schematic diagram of the servo system and waveguide short-circuit breaker of a high-power power divider with continuously adjustable power distribution ratio.

[0023] In the figure, 1. Servo motor, 2. Connecting rod, 3. Waveguide short-circuit breaker, 4. Third 3dB coupler, 5. First 3dB coupler, 6. Waveguide load, 7. Total signal input terminal, 8. First signal output terminal, 9. Second signal output terminal, 10. Second 3dB coupler, 11. Slide table, 12. Lead screw. Detailed Embodiment

[0024] To deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with the embodiments and the drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention. Embodiment

[0025] As Figure 1 、 Figure 2 shown;

[0026] Servo motor 1, connecting rod 2, waveguide short-circuit device 3, third 3dB coupler 4, first 3dB coupler 5, waveguide load 6, total signal input terminal 7, first signal output terminal 8, second signal output terminal 9, second 3dB coupler 10, slide table 11, lead screw 12

[0027] A high-power power divider with continuously adjustable power distribution ratio, comprising at least three interconnected 3dB couplers, including a 3dB coupler 5 for overall signal input, a 3dB coupler 10 for overall signal output, and a 3dB coupler 4 for phase adjustment. The input of the 3dB coupler 5 for overall signal input includes signal input and load input; the output of the 3dB coupler 10 for overall signal output includes first signal output and second signal output; at least one of the two external ports of the 3dB coupler for phase adjustment is connected to the waveguide short-circuit device 3, and the phase of the waveguide short-circuit device is adjustable.

[0028] The waveguide short-circuit device 3 controls the movement of the short-circuit plane through a servo system, thereby controlling the phase value of the short-circuit point of the waveguide short-circuit device 3; the servo system includes a servo motor 1, a slide table 11, and a lead screw 12. The output shaft of the servo motor is connected to the short-circuit plane of the waveguide short-circuit device 3 through the lead screw 12 and the connecting rod 2. Therefore, the servo system can be manually, electrically, or remotely started.

[0029] Among them, the 3dB coupler includes a first 3dB coupler 5, a second 3dB coupler 10, and a third 3dB coupler 4. Each 3dB coupler has four ports. The first 3dB coupler 5 includes ports 1-1, 1-2, 1-3, and 1-4. The second 3dB coupler 10 includes ports 2-1, 2-2, 2-3, and 2-4. The third 3dB coupler 4 includes ports 3-1, 3-2, 3-3, and 3-4; among them, 1-1, 1-3, 3-2, and 3-4 are connected in sequence, 1-2, 1-4, 2-1, and 2-3 are connected in sequence, 3-3, 3-1, 2-2, and 2-4 are connected in sequence. Among them, 1-1 is the total signal input terminal 7, 1-2 is the load input terminal, 3-3 and 3-4 are connected to the waveguide short-circuit device 3, 2-4 is used for the first signal output terminal 8, and 2-4 is the second signal output terminal 9. The ratio of the first signal to the second signal is adjustable; a waveguide load 6 is connected to the load input terminal 1-2; the specific ratio of the first signal to the second signal is n, where ΔΦ = (Φ(2-2) - Φ(1-3)) - (Φ(2-1) - Φ(1-4)), where: Φ(2-2) is the phase value at port 2-2, Φ(1-3) is the phase value at port 1-3, Φ(2-1) is the phase value at port 2-1, and Φ(1-4) is the phase value at port 1-4.

[0030] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, causing the phases of the ports of the first 5, second 10, and third 3 dB couplers 4 to change, thereby changing the output power distribution ratio between the first output port 9 and the second output port 10. In Embodiment 1, ΔΦ is 0°. Embodiment

[0031] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -36.8°. The rest is the same as in Embodiment 1. Embodiment

[0032] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -53.1°. The rest is the same as in Embodiment 1. Embodiment

[0033] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -66.4°. The rest is the same as in Embodiment 1. Embodiment

[0034] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -78.5°. The rest is the same as in Embodiment 1. Embodiment

[0035] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -90°. The rest is the same as in Embodiment 1. Embodiment

[0036] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -101.5°. The rest is the same as in Embodiment 1. Embodiment

[0037] Start the servo motor system, which includes a servo motor 1, a slide table 11, and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit device 3 to move through the connecting rod 2, and adjust it to ΔΦ = -113.6°. The rest is the same as in Embodiment 1. Embodiment

[0038] Start the servo motor system, which includes a servo motor 1, a slide table 11 and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit breaker 3 to move through a connecting rod 2, and adjust it to ΔΦ = -126.8°. The rest is the same as that in the first embodiment. Embodiment

[0039] Start the servo motor system, which includes a servo motor 1, a slide table 11 and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit breaker 3 to move through a connecting rod 2, and adjust it to ΔΦ = -143.1°. The rest is the same as that in the first embodiment.

[0040] Embodiment XI:

[0041] Start the servo motor system, which includes a servo motor 1, a slide table 11 and a lead screw 12. Drive the short-circuit surface of the waveguide short-circuit breaker 3 to move through a connecting rod 2, and adjust it to ΔΦ = -180°. The rest is the same as that in the first embodiment.

[0042] The following table is a list of the output situations of Embodiment 1 to Embodiment XI:

[0043] Serial number ΔΦ (°) Power distribution ratio of output port 1 (%) Power distribution ratio of output port 2 (%) 1 0 0 100 2 -36.8 10 90 3 -53.1 20 80 4 -66.4 30 70 5 -78.5 40 60 6 -90 50 50 7 -101.5 60 40 8 -113.6 70 30 9 -126.8 80 20 10 -143.1 90 10 11 -180 100 0

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-power power divider with continuously adjustable power distribution ratio, comprising a main body, characterized in that, It includes at least three interconnected 3dB couplers, including one 3dB coupler for overall signal input, one 3dB coupler for overall signal output, and one 3dB coupler for phase adjustment. The input of the 3dB coupler for overall signal input includes signal input and load input. The output of the 3dB coupler for overall signal output includes first signal output and second signal output. At least one of the two external ports of the 3dB coupler for phase adjustment is connected to a waveguide short-circuit breaker, and the phase of the waveguide short-circuit breaker is adjustable. The waveguide short-circuit breaker controls the movement of the short-circuit plane through a servo system, thereby controlling the phase value of the short-circuit point of the waveguide short-circuit breaker.

2. The high-power power divider with continuously adjustable power distribution ratio according to claim 1, wherein The servo system includes a servo motor, a slide table, and a lead screw. The output shaft of the servo motor is connected to the short-circuit plane of the waveguide short-circuit breaker through the lead screw.

3. A high-power power divider with continuously adjustable power distribution ratio according to claim 1, characterized in that, The servo system is manual or electric.

4. A high-power power divider with continuously adjustable power distribution ratio according to claim 1, characterized in that Among them, the 3dB coupler includes a first 3dB coupler, a second 3dB coupler, and a third 3dB coupler. Each 3dB coupler has four ports. The first 3dB coupler includes ports 1-1, 1-2, 1-3, 1-4. The second 3dB coupler includes ports 2-1, 2-2, 2-3, 2-4. The third 3dB coupler includes ports 3-1, 3-2, 3-3, 3-4. Among them, 1-1, 1-3, 3-2, 3-4 are connected in sequence, 1-2, 1-4, 2-1, 2-3 are connected in sequence, 3-3, 3-1, 2-2, 2-4 are connected in sequence. Among them, 1-1 is the total signal input end, 1-2 is the load input end, 3-3, 3-4 are connected to the waveguide short-circuit breaker, 2-4 is used for the output of the first signal, 2-4 is used for the output of the second signal, and the ratio of the first signal to the second signal is adjustable.

5. The high-power power divider with continuously adjustable power distribution ratio according to claim 3, characterized in that, The specific ratio of the first signal to the second signal is n, where ΔΦ = (Φ(2-2) - Φ(1-3)) - (Φ(2-1) - Φ(1-4)), where: Φ(2-2) is the phase value at port 2-2, Φ(1-3) is the phase value at port 1-3, Φ(2-1) is the phase value at port 2-1, and Φ(1-4) is the phase value at port 1-4.

6. The high-power power divider with continuously adjustable power distribution ratio according to claim 1, characterized in that, The main body is a frame structure, and each 3dB coupler and the waveguide short-circuit breaker are installed inside the frame structure.

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