CN221669055U - Compact five-port high-power adjustable power divider - Google Patents

Abstract

The utility model relates to a compact five-port high-power adjustable power divider which comprises three mutually connected T-shaped waveguides, two straight waveguides connected with the T-shaped waveguides and used for installing a short-circuit piston, two short-circuit pistons and a set of servo motor driving mechanism used for driving the short-circuit pistons to move. The high-power microwave signal transmission device can transmit high-power microwave signals, power distribution is adjustable, only 1 matching load is needed in the actual use process of the electronic linear accelerator, and the use cost is reduced.

Description

Compact five-port high-power adjustable power divider

Technical Field

The utility model relates to the technical field of adjustable power dividers, in particular to a compact five-port high-power adjustable power divider.

Background

The power divider is a device that divides one input signal energy into two or more paths of equal or unequal energy, and can conversely combine multiple paths of signal energy into one output, which can be also called a combiner. Certain isolation should be ensured between the output ports of one power divider. The power divider is also called an overcurrent divider, is divided into an active power divider and a passive power divider, can averagely divide one path of signal into a plurality of paths of output, generally has attenuation of a plurality of dB for each path of signal, has different signal frequencies and different attenuation for the divider, and is provided with an amplifier for compensating the attenuation.

In the prior art, a scheme such as chinese patent application publication No. CN115173013a discloses a high-power divider with continuously adjustable power distribution ratio, which includes a main body, and is characterized by including at least three 3db couplers connected to each other, wherein the main body includes a 3db coupler for overall signal input, a 3db coupler for overall signal output, and a 3db coupler for phase adjustment, and the inputs of the 3db couplers for overall signal input include signal input and load input; the output of the 3db coupler for the overall signal output includes a first signal output and a second signal output; at least one of two external ports of the 3db coupler for phase adjustment is connected with a waveguide short-circuiting device, the phase of the waveguide short-circuiting device is adjustable, the waveguide short-circuiting device is controlled by a set of servo motor system, and the output power adjustable function of the power divider can be realized by manually, electrically and remotely controlling the movement of the short-circuiting surface of the waveguide short-circuiting device.

In the prior art, a second scheme is disclosed in chinese patent application with publication number CN112103606a, which discloses an adjustable coaxial line power divider and a method of use, wherein the divider comprises: the microwave coaxial transmission line comprises a first input port, first to fourth output ports, a microwave coaxial transmission line, first to third impedance adders and first to second short-circuit pistons, wherein the first output port and the third output port are respectively connected with the first impedance adders; the first input port is connected with the second impedance adder; the second output port and the fourth output port are respectively connected with a third impedance adder; the third output port is also connected with the first short-circuit piston, and the fourth output port is also connected with the second short-circuit piston and is used for changing the positions of the two short-circuit pistons to adjust the power distribution ratio; the first impedance adder is connected with the third impedance adder through a microwave coaxial transmission line with the length of lambda/4, and the first impedance adder is used for ensuring that the impedance value of the first input port is always matched in the adjusting process. The distributor has a simple and compact structure, can be scaled to any wave band, and meets the requirements of different application occasions.

The prior art solutions described above have the following drawbacks: the core scheme of the scheme I is that the position of a piston of a short-circuiting device is adjusted by using 3dB couplers and 2 waveguide short-circuiting devices, and the power distribution proportion is adjusted. It has 6 ports, and is bulky, and the cost is expensive. In addition, in the actual use process of the electronic linear accelerator, only one path of output power needs to be adjusted, and by adopting the scheme, a 3dB port on the input side and a port on the output side are needed to be connected with a matched load at the same time. This requires 2 matching loads. The high-power matching load is high in manufacturing cost and increases the use cost.

The core scheme of the scheme II is that the position of a piston of a short-circuiting device is adjusted by using 3 impedance adders (the same axis of T-shaped) and 2 short-circuiting devices, and the power distribution proportion is adjusted. The device has 5 ports, is compact in structure, and only needs 1 matching load in actual use. But the coaxial transmission line structure cannot transmit high power microwave signals.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model aims to provide the compact five-port high-power adjustable power divider which can transmit high-power microwave signals, is adjustable in power distribution, only needs 1 matched load in the actual use process of the electronic linear accelerator, and reduces the use cost.

The above object of the present utility model is achieved by the following technical solutions:

A compact five-port high-power adjustable power divider comprises three mutually connected T-shaped waveguides, two straight waveguides connected with the T-shaped waveguides and used for installing a short-circuit piston, two short-circuit pistons and a set of servo motor driving mechanism used for driving the short-circuit pistons to move.

As a further technical scheme of the utility model: one port of the T-shaped waveguide positioned in the middle position is a signal input port of the adjustable power divider, one port of the two T-shaped waveguides on two sides is a signal output port, the other port of the T-shaped waveguide is connected with the short-circuit piston, the position of the short-circuit piston is adjusted, and the phase difference of signals of the two output ports of the power divider can be adjusted, so that the adjustment of the power distribution proportion is realized.

As a further technical scheme of the utility model: the servo motor driving mechanism is connected with a servo motor controller, and the servo motor controller is used for remotely controlling the servo motor driving mechanism so as to drive the short-circuit piston.

As a further technical scheme of the utility model: in practical use, when only one output port is needed by the T-shaped waveguide, the matched absorption load is connected to the other output port.

As a further technical scheme of the utility model: the distance between the two paths of short-circuit pistons is different by 1/4 wavelength.

As a further technical scheme of the utility model: the microwave power signal input section of the signal input port of the T-shaped waveguide is rectangular.

In summary, the present utility model includes at least one of the following beneficial technical effects:

The utility model discloses a compact five-port high-power adjustable power divider, which adopts 3T-shaped waveguides and 2 waveguide short-circuiting devices to adjust the position of a short-circuiting piston so as to realize power distribution. Because rectangular waveguide is adopted, high-power microwave signals can be transmitted. The T-shaped waveguide structure is small and exquisite, so that the whole power divider is compact in structure. The 2 ports of the 5-port power divider are used for installing the short-circuit piston, the 1 port is used for power input, and the other 2 ports are used for power output, and in actual use, only 1 output port is required to be connected with a matched load, so that the number of high-power matched loads is reduced, and the use cost is reduced. The high-power microwave signal transmission device can transmit high-power microwave signals, power distribution is adjustable, only 1 matching load is needed in the actual use process of the electronic linear accelerator, and the use cost is reduced.

Drawings

Fig. 1 is a side view of the present utility model.

Fig. 2 is a cross-sectional view taken along line A-A in fig. 1.

FIG. 3 is a graph of the results of a particular software analysis of the present utility model.

FIG. 4 is a graph of the results of a particular software analysis of the present utility model.

Reference numerals: 1. a signal input port; 2. a signal output port; 3-4, shorting the piston ports; 5. a signal output port; 6-8, T-shaped waveguide; 9-10, a straight waveguide; 11-12, a shorting piston; 13-14, a piston driving rod; 15. a servo motor driving mechanism; 16. absorbing the load; 17. a servo motor controller.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application; it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the protection scope of the present application.

In the description of the present application, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

Referring to fig. 1-2, a compact five-port high-power adjustable power divider disclosed by the utility model comprises three mutually connected T-shaped waveguides, two straight waveguides connected with the T-shaped waveguides and used for installing a shorting piston, two shorting pistons and a set of servo motor driving mechanism 15 used for driving the shorting pistons to move. Further, the servo motor driving mechanism 15 is connected to the shorting piston 11 through the piston driving rod 13, and the servo motor driving mechanism 15 is connected to the shorting piston 12 through the piston driving rod 14.

The three T-shaped waveguides are respectively a T-shaped waveguide 6, a T-shaped waveguide 7 and a T-shaped waveguide 8, the two straight waveguides are respectively a straight waveguide 9 and a straight waveguide 10, and the two short-circuit pistons are respectively a short-circuit piston 11 and a short-circuit piston 12.

One port of the T-shaped waveguide 6 positioned in the middle position is a signal input port 1 of the adjustable power divider, one port of the two T-shaped waveguides on two sides is a signal output port, the other port is connected with the short-circuit piston, the position of the short-circuit piston is adjusted, and the phase difference of signals of the two output ports of the power divider can be adjusted, so that the adjustment of the power distribution proportion is realized.

Specifically, one port of the T-shaped waveguide 7 is a signal output port 2, and the other port is connected to the shorting piston port 3. One port of the T-shaped waveguide 8 is a signal output port 5, the other port is connected with the shorting piston port 4,

The servo motor driving mechanism 15 is connected with a servo motor controller 17, and the servo motor controller 17 is used for remotely controlling the servo motor driving mechanism 15 so as to realize driving of the short-circuit piston. In practical use, when only one output port is needed by the T-shaped waveguide, the matched absorption load is connected to the other output port. The distance between the two short-circuit pistons is 1/4 wavelength different. The microwave power signal input section of the signal input port of the T-shaped waveguide is rectangular.

In this embodiment, a rectangular section waveguide is used, and for example, a signal of 2998.8MHz in the S band may be scaled to other bands. The adjustable power divider has a simple and compact structure and can transmit high-power microwave signals. When only one output port is needed in actual use, the matched absorption load is connected to the other output port.

The realization principle is as follows:

After being input into a microwave input port 1 of a T-shaped waveguide 6 with a rectangular cross section, a microwave power signal is split into two parts, and enters a T-shaped waveguide 7 and a T-shaped waveguide 8 at two sides respectively; the T-shaped waveguide 7 outputs one path of signal to the microwave signal port output 2, and the other path of signal enters the straight waveguide 9 and is reflected by the short-circuit piston 11; similarly, the T-shaped waveguide 8 outputs one signal to the microwave signal port output 5, and the other signal enters the straight waveguide 10 and is reflected by the short-circuit piston 12; the signals reflected by the short-circuit pistons 11 and 12 have the same phase and no reflected power at the microwave signal input port 1 because the distance between the two pistons is different by 1/4/wavelength at the signal input port 1 reaching the T-shaped waveguide 6; at the two signal output ports 2, 5, there are also signals reflected by the two shorting pistons 11, 12, which are superimposed with signals from the direct output ports of the T-shaped waveguides 7, 8; the positions of the short-circuit piston 11 and the short-circuit piston 12 are adjusted, so that the phase value of the reflected signal can be adjusted; the power ratio of the microwave signals at the signal output port 2 and the signal output port 5 is related to the phase difference value of the signals at the two output ports, so that the proportion of power distribution can be adjusted by adjusting the position of the short-circuit piston; the relation between the signal power ratio and the phase difference value can be obtained through numerical simulation or experimental test; in practical use, only one output signal is needed, for example, only the signal of the signal output port 5 is needed, and a matched absorption load 16 is connected to the signal output port 2 to absorb microwave power.

Experimental data:

The piston moving range is 0-71mm, and the power adjusting range is 0-35 dB; in the process of moving the piston by 0-71mm, the standing wave ratio of the microwave input port 1 is very small, and the reflected power is very small.

Referring to FIG. 3, the piston movement range is 0-71mm and the power adjustment range is 0-35 dB. Referring to fig. 4, in the process of moving the piston by 0-71mm, the standing wave ratio of the microwave input port 1 is very small, and the reflected power is very small.

The implementation principle of the utility model is as follows: the utility model discloses a compact five-port high-power adjustable power divider, which adopts 3T-shaped waveguides and 2 waveguide short-circuiting devices to adjust the position of a short-circuiting piston so as to realize power distribution. Because rectangular waveguide is adopted, high-power microwave signals can be transmitted. The T-shaped waveguide structure is small and exquisite, so that the whole power divider is compact in structure. The 2 ports of the 5-port power divider are used for installing the short-circuit piston, the 1 port is used for power input, and the other 2 ports are used for power output, and in actual use, only 1 output port is required to be connected with a matched load, so that the number of high-power matched loads is reduced, and the use cost is reduced. The high-power microwave signal transmission device can transmit high-power microwave signals, power distribution is adjustable, only 1 matching load is needed in the actual use process of the electronic linear accelerator, and the use cost is reduced.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (6)

1. The utility model provides a high-power adjustable power divider of compact five ports, its characterized in that includes three interconnect's T shape waveguide, two with the straight waveguide that is used for installing the short circuit piston that T shape waveguide links to each other, two short circuit pistons and a set of servo motor actuating mechanism (15) that are used for driving the short circuit piston motion.

2. The compact five-port high-power adjustable power divider according to claim 1, wherein one port of the T-shaped waveguide (6) located at the middle position is a signal input port of the adjustable power divider, one port of the two T-shaped waveguides on two sides is a signal output port, the other port is connected with the shorting piston, and the position of the shorting piston is adjusted, so that the phase difference of signals of the two output ports of the power divider can be adjusted, and the adjustment of the power distribution ratio is realized.

3. The compact five-port high-power adjustable power divider according to claim 1, characterized in that the servo motor driving mechanism (15) is connected with a servo motor controller (17), and the servo motor controller (17) is used for remotely controlling the servo motor driving mechanism (15) so as to realize driving of the short-circuit piston.

4. A compact five-port high power adjustable power divider as claimed in claim 1, characterized in that in actual use, when only one output port is required for the T-shaped waveguide, a matching absorption load (16) is connected to the other output port.

5. The compact five-port high-power adjustable power divider of claim 1, wherein the distance between the two shorting pistons differs by 1/4 wavelength.

6. A compact five-port high-power adjustable power divider as claimed in claim 1, characterized in that the signal input port of the T-shaped waveguide (6) has a rectangular microwave power signal input section.