A phase compatible power divider

Abstract

The present application belongs to the technical field of power divider, and particularly relates to a phase-compatible power divider. The phase-compatible power divider comprises a shell structure, which comprises an outer shell with a receiving cavity and a bottom plate fixed to the receiving cavity. A voltage transformation unit is located in the receiving cavity and connected to the bottom plate. The power divider further comprises a first input terminal, a second input terminal, a first output terminal and a second output terminal, which are all connected to the outer shell and electrically connected to the voltage transformation unit. The voltage transformation unit has a first power division state and a second power division state. When the voltage transformation unit is in the first power division state, an electrical signal is input into the voltage transformation unit through the first input terminal, and the phase difference between the first output terminal and the second output terminal is 180 degrees. When the voltage transformation unit is in the second power division state, an electrical signal is input into the voltage transformation unit through the second input terminal, and the phase difference between the first output terminal and the second output terminal is 0 degrees. The phase-compatible power divider provided by the present application can simultaneously accommodate the characteristics of 0° and 180° phase difference.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power divider, and particularly relates to a phase-compatible power divider. BACKGROUND

[0002] The power divider, also known as a power distributor, is a device for dividing the energy of an input electrical signal into two or more output paths with equal or unequal energy. The power divider is generally used for power distribution and power combination, and is mainly applied to balanced power amplifiers, balanced mixers and antenna arrays and other radio frequency circuits.

[0003] With the rapid development of wireless communication technology, the related technology of the power divider as an important device of the system has been widely and deeply researched. With the development of science and technology, the power divider is applied in more and more fields.

[0004] However, the existing power divider can only output one type of phase difference, and cannot meet the demand of multiple phase differences, so other power dividers with different phase differences are needed. SUMMARY

[0005] The purpose of the embodiment of the present application is to provide a phase-compatible power divider, which aims to solve the problem of how to expand the type of phase difference output by the phase-compatible power divider.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0007] The present application provides a phase-compatible power divider, which comprises:

[0008] A shell structure comprising an outer shell having a receiving cavity and a bottom plate fixed to the receiving cavity, wherein the bottom plate is made of an insulating material; and

[0009] A transformer unit located in the receiving cavity and connected to the bottom plate;

[0010] The phase-compatible power divider further comprises a first input terminal, a second input terminal, a first output terminal and a second output terminal, all of which are connected to the outer shell and electrically connected to the transformer unit; the transformer unit has a first power division state and a second power division state; when the transformer unit is in the first power division state, an electrical signal is input into the transformer unit through the first input terminal, and the phase difference between the first output terminal and the second output terminal is 180 degrees; when the transformer unit is in the second power division state, the electrical signal is input into the transformer unit through the second input terminal, and the phase difference between the first output terminal and the second output terminal is 0 degrees.

[0011] In some embodiments, the transformer unit comprises a first transmission transformer branch and a second transmission transformer branch coupled with the first transmission transformer branch, the first transmission transformer branch is located between the first input terminal and the first output terminal; the second transmission transformer branch is located between the second input terminal and the second output terminal.

[0012] In some embodiments, the first transmission transformer branch comprises a first coil and a second coil coupled with the first coil, the first coil and the second coil are located between the first input terminal and the first output terminal; the second transmission transformer branch comprises two third coils and a fourth coil, the two third coils are located between the second input terminal and the second output terminal, and the fourth coil is located between the two third coils; the transformer unit further comprises a capacitor, one end of the capacitor is connected between the first input terminal and the first coil, and the other end of the capacitor is connected between the second input terminal and the third coil.

[0013] In some embodiments, the transformer unit further comprises two double-hole magnetic cores, the wires of the first coil and the second coil are wound around one of the double-hole magnetic cores; the wires of the two third coils and the fourth coil are wound around the other double-hole magnetic core.

[0014] In some embodiments, the transformer unit further comprises an adhesive layer, the adhesive layer bonds the capacitor and the bottom plate.

[0015] In some embodiments, the shell is a bakelite shell.

[0016] In some embodiments, the surfaces of the first input terminal, the second input terminal, the first output terminal and the second output terminal are plated with an anticorrosion layer.

[0017] In some embodiments, the anticorrosion layer comprises a metal nickel layer and a gold plating layer on the metal nickel layer.

[0018] In some embodiments, the thickness of the metal nickel layer ranges from 15 to 25 μm.

[0019] In some embodiments, the bottom plate is a bottom plate made of ceramic material.

[0020] The application has the beneficial effects that the phase-compatible power divider has a first power division state and a second power division state, an electrical signal with a phase of 180 degrees is input into the transformation unit through the first input terminal, and the phase difference of the electrical signals finally output at the first output terminal and the second output terminal is 180 degrees; or an electrical signal with a phase of 0 degrees is input into the transformation unit through the second input terminal, and the phase difference of the electrical signals finally output at the first output terminal and the second output terminal is 0 degrees, so that the types of the phase difference of the electrical signals output by the phase-compatible power divider are improved, and the characteristic that the phase-compatible power divider can simultaneously compatible with the two phase differences of 0° and 180° is realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 is a perspective structural schematic diagram of the phase-compatible power divider provided by the present application;

[0023] Figure 2 is a sectional view schematic diagram of the phase-compatible power divider of Figure 1 ;

[0024] Figure 3 is an internal structure exploded schematic diagram of the phase-compatible power divider of Figure 1 ;

[0025] Figure 4 is a circuit principle schematic diagram of the transformation unit of the phase-compatible power divider of Figure 3 ;

[0026] Figure 5 is an electrical pin schematic diagram of the phase-compatible power divider of Figure 3 ;

[0027] Figure 6 is a front view schematic diagram of the phase-compatible power divider of Figure 1 ;

[0028] Figure 7 is a bottom view schematic diagram of the phase-compatible power divider of Figure 1 .

[0029] In the drawings, various reference signs represent:

[0030] 100, phase compatible power divider; 150, housing structure; 101, outer shell; 110, pin; 103, accommodating cavity; 203, capacitor; 130, magnetic core; 120, lead-out wire; 140, adhesive layer; 201, first coil; 202, second coil; 201', third coil; 202', fourth coil; 501, first transmission transformer branch; 502, second transmission transformer branch; 301, first input terminal; 302, second input terminal; 401, first output terminal; 402, second output terminal; 204, coupling line; 205, ground line; 500, transformer unit; 102, bottom plate; DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set to" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only used for convenience of description, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first", "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implying the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] Referring to Figures 1 to 3 The embodiment of the present application provides a phase compatible power divider 100, which comprises a housing structure 150 and a transformer unit 500.

[0034] The housing structure 150 comprises an outer shell 101 having an accommodating cavity 103 and a bottom plate 102 fixed to the accommodating cavity 103, the bottom plate 102 is made of insulating material, and the outer shape of the outer shell 101 can be a cuboid, a square or a circular truncated cone. In the embodiment, the outer shape of the outer shell 101 is a cuboid, and in other embodiments, the outer shape can be selected according to actual conditions, which is not limited here.

[0035] Referring to Figures 3 to 5The transformer unit 500 is located in the accommodating cavity 103 and connected to the bottom plate 102; wherein the phase-compatible power divider 100 further comprises a first input terminal 301, a second input terminal 302, a first output terminal 401 and a second output terminal 402, which are all connected to the shell 101 and all electrically connected to the transformer unit 500. The transformer unit 500 has a first power division state and a second power division state.

[0036] It can be understood that when the transformer unit 500 is in the first power division state, an external 180-degree phase electrical signal is input into the transformer unit 500 through the first input terminal 301, and after phase shifting in the transformer unit 500, the electrical signal is output at the first output terminal 401 and the second output terminal 402. By using the characteristic of 180-degree phase difference of the transformer unit 500, the phase difference between the first output terminal 401 and the second output terminal 402 is 180 degrees.

[0037] Please refer to Figures 3 to 5 It can be understood that when the transformer unit 500 is in the second power division state, the 0-degree phase electrical signal is input into the transformer unit 500 through the second input terminal 302, and after phase shifting in the transformer unit 500, the electrical signal is output at the first output terminal 401 and the second output terminal 402. By using the characteristic of 0-degree phase difference of the transformer unit 500, the phase difference between the first output terminal 401 and the second output terminal 402 is 0 degrees. Wherein the electrical signal can be voltage or current, which is not limited here and can be selected according to actual conditions.

[0038] Please refer to Figures 3 to 5 The phase-compatible power divider 100 provided by the embodiment of the present application has a first power division state and a second power division state. By inputting a 180-degree phase electrical signal into the transformer unit 500 through the first input terminal 301, the phase difference between the electrical signals finally output at the first output terminal 401 and the second output terminal 402 is 180 degrees; or by inputting a 0-degree phase electrical signal into the transformer unit 500 through the second input terminal 302, the phase difference between the electrical signals finally output at the first output terminal 401 and the second output terminal 402 is 0 degrees. Thus, the types of phase difference output by the phase-compatible power divider 100 are improved, and the characteristic that the phase-compatible power divider 100 can simultaneously compatible with 0° and 180° phase difference is realized.

[0039] Please refer to Figures 3 to 5In some embodiments, the voltage transformation unit 500 comprises a first transmission voltage branch 501 and a second transmission voltage branch 502 coupled with the first transmission voltage branch 501, the first transmission voltage branch 501 is located between the first input terminal 301 and the first output terminal, and the second transmission voltage branch 502 is located between the second input terminal 302 and the second output terminal.

[0040] The phase of the electrical signal input from the first input terminal 301 is 180 degrees, and the phase difference of the electrical signal output from the first output terminal 401 and the second output terminal 402 after passing through the first transmission voltage branch 501 and the second transmission voltage branch 502 is 180 degrees.

[0041] The phase of the electrical signal input from the second input terminal 302 is 0 degrees, and the phase difference of the electrical signal output from the first output terminal 401 and the second output terminal 402 after passing through the first transmission voltage branch 501 and the second transmission voltage branch 502 is 0 degrees.

[0042] In some embodiments, the first transmission voltage branch 501 comprises a first coil 201 and a second coil 202 coupled with the first coil 201, the first coil 201 and the second coil 202 are located between the first input terminal 301 and the first output terminal 401; wherein the first coil 201 is located between the second coil 202 and the first input terminal 301.

[0043] Please refer to Figures 3 to 5 , the second transmission voltage branch 502 comprises two third coils 201' and a fourth coil 202', the two third coils 201' are located between the second input terminal 302 and the second output terminal 402, and the fourth coil 202' is located between the two third coils 201'.

[0044] The voltage transformation unit 500 further comprises a capacitor 203, one end of the capacitor 203 is connected between the first input terminal 301 and the first coil 201, and the other end of the capacitor 203 is connected between the second input terminal 302 and the third coil 201'.

[0045] Please refer to Figures 3 to 5 Optionally, the voltage transformation unit 500 further comprises a coupling line 204, one end of the coupling line 204 is connected between the first coil 201 and the second coil 202, and the other end of the coupling line 204 is connected between the third coil 201' and the fourth coil 202', and the connection point is away from the second output terminal 402. The voltage transformation unit 500 further comprises a grounding line 205, one end of the grounding line 205 is connected between the fourth coil 202' and the third coil 201', and the connection point is away from the second input terminal 302.

[0046] Optionally, in the embodiment, the first coil 201 and the third coil 201' are equivalent in structure and function, and the second coil 202 and the fourth coil 202' are equivalent in structure and function, which can be selected according to actual conditions, and is not limited here.

[0047] Please refer to Figures 3 to 5 Optionally, the first coil 201, the second coil 202, the third coil 201' and the fourth coil 202' are all made of a wire, and the wire is an enameled wire.

[0048] In some embodiments, the voltage transformation unit 500 further comprises two double-hole magnetic cores 130, and the wire of the first coil 201 and the second coil 202 is wound on one of the double-hole magnetic cores 130; and the wire of the third coil 201' and the fourth coil 202' is wound on the other double-hole magnetic core 130.

[0049] Optionally, the double-hole magnetic core 130 is made of a soft magnetic ferrite core as a base material, and an enameled wire is wound on the magnetic core 130 to form a corresponding coil winding.

[0050] In some embodiments, the voltage transformation unit 500 further comprises a glue layer 140, and the glue layer 140 bonds the capacitor 203 and the bottom plate 102.

[0051] Please refer to Figures 3 to 5 Optionally, in the embodiment, the glue layer 140 is made of an epoxy resin material, and the epoxy resin is a high molecular polymer, which is a general term for a class of polymers containing two or more epoxy groups in the molecule. It is the condensation product of epoxy chloropropane and bisphenol A or polyol. Due to the chemical activity of the epoxy group, it can be opened ring with various compounds containing active hydrogen, and cross-linked to form a network structure, so it is a thermosetting resin.

[0052] Please refer to Figures 6 to 7 In some embodiments, the shell 101 is made of bakelite. Bakelite is the first variety of plastic to be put into industrial production, and its chemical name is phenolic plastic. It has high mechanical strength, good insulation, heat resistance and corrosion resistance, and is therefore often used to manufacture electrical materials.

[0053] Optionally, the working temperature of the phase-compatible power divider 100 provided in the embodiment is -55~125℃, and the shell 101 is made of high-temperature-resistant bakelite material, which can make the phase-compatible power divider 100 work stably, and the bakelite material is convenient for subsequent laser marking.

[0054] Please refer to Figures 3 to 5Optionally, in the embodiment, the two ends of the lead-out wire 120 of the first input terminal 301, the second input terminal 302, the first output terminal 401 and the second output terminal 402 are respectively spot-welded on the pin 110 and the bottom plate 102 of the shell 101, and the capacitor 203 is also welded on the bottom plate 102 and fixed by using the adhesive layer 140 made of epoxy resin material, so as to ensure the anti-vibration and anti-impact capability of the phase-compatible power divider 100.

[0055] In some embodiments, the surfaces of the first input terminal 301, the second input terminal 302, the first output terminal 401 and the second output terminal 402 are plated with an anti-corrosion layer to improve the salt spray resistance and protect the first input terminal 301, the second input terminal 302, the first output terminal 401 and the second output terminal 402.

[0056] Please refer to Figures 3 to 5 In some embodiments, the anti-corrosion layer comprises a metal nickel layer and a gold plating layer on the metal nickel layer. After the surfaces of the first input terminal 301, the second input terminal 302, the first output terminal 401 and the second output terminal 402 are plated with the metal nickel layer, the gold plating layer is arranged to increase the solderability and meet the predetermined solderability requirement.

[0057] Optionally, the nickel layer is arranged by electroplating, which has high reliability and low cost. Subsequent marking process uses a laser marking machine to print relevant marks on the surface of the anti-corrosion layer, and controls the depth of the printed characters to meet the salt spray resistance requirement.

[0058] Please refer to Figures 3 to 5 In some embodiments, the thickness of the metal nickel layer ranges from 15 to 25 μm. Optionally, the thickness of the metal nickel layer can be 15 μm, 20 μm or 25 μm. In the embodiment, the thickness of the metal nickel layer is 20 μm, and in other embodiments, the thickness can be selected according to actual conditions, which is not limited here.

[0059] Optionally, the thickness of the gold plating layer is 0.8 μm. Arranging the gold plating layer can increase the solderability and reliability of the solder joint.

[0060] In some embodiments, the bottom plate 102 is a bottom plate 102 made of ceramic material. Ceramic material is a kind of inorganic non-metallic material made of natural or synthetic compounds through shaping and high-temperature sintering. It has the characteristics of high melting point, high hardness, high wear resistance, oxidation resistance and insulation.

[0061] The above merely provides optional embodiments of the present application, but not for limiting the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc., made within the principles and technical scope of the present application, should be included in the scope of the claims of the present application.

Claims

1. A phase compatible power divider, characterized by, The application relates to a phase-compatible power divider. The phase-compatible power divider comprises a shell structure and a variable unit. The shell structure comprises a shell with a containing cavity and a bottom plate fixed to the containing cavity, wherein the bottom plate is made of insulating material. The variable unit is located in the containing cavity and connected to the bottom plate. The phase-compatible power divider further comprises a first input terminal, a second input terminal, a first output terminal and a second output terminal, which are all connected to the shell and electrically connected to the variable unit. The variable unit has a first power division state and a second power division state. When the variable unit is in the first power division state, an electric signal is input into the variable unit through the first input terminal, and the phase difference between the first output terminal and the second output terminal is 180 degrees.

2. The phase-compatible power splitter of claim 1, wherein: When the variable unit is in the second power division state, the electric signal is input into the variable unit through the second input terminal, and the phase difference between the first output terminal and the second output terminal is 0 degrees.

3. The phase-compatible power splitter of claim 1, wherein: The variable unit comprises a first transmission variable branch and a second transmission variable branch coupled to the first transmission variable branch.

4. The phase compatible power divider of any one of claims 1-3, wherein: The first transmission variable branch is located between the first input terminal and the first output terminal.

5. The phase-compatible power splitter of any one of claims 1-3, wherein: The second transmission variable branch is located between the second input terminal and the second output terminal.

6. The phase-compatible power splitter of claim 5, wherein: The first transmission variable branch comprises a first coil and a second coil coupled to the first coil, and the first coil and the second coil are located between the first input terminal and the first output terminal.

7. The phase-compatible power splitter of claim 6, wherein: The second transmission variable branch comprises two third coils and a fourth coil, and the two third coils are located between the second input terminal and the second output terminal, and the fourth coil is located between the two third coils.

8. The phase-compatible power splitter of any one of claims 1-3, wherein: The variable unit further comprises a capacitor, one end of which is connected between the first input terminal and the first coil, and the other end of which is connected between the second input terminal and the third coil. The variable unit further comprises two double-hole magnetic cores, and the wires of the first coil and the second coil are wound around one of the double-hole magnetic cores. The wires of the two third coils and the fourth coil are wound around the other double-hole magnetic core. The variable unit further comprises a glue layer, which bonds the capacitor and the bottom plate. The shell is made of bakelite. The surfaces of the first input terminal, the second input terminal, the first output terminal and the second output terminal are plated with an anticorrosion layer. The anticorrosion layer comprises a metal nickel layer and a gold plating layer located on the metal nickel layer. The thickness of the metal nickel layer ranges from 15 to 25 micrometers. The bottom plate is made of ceramic material.

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