Unequal power divider

Abstract

The application discloses an unequal division power divider, which comprises a bottom plate, an air strip line, a first suspended microstrip line, a phase compensation circuit, a first microstrip line and a second suspended microstrip line. The bottom plate is provided with a first connecting end, a second connecting end, a third connecting end, a fourth connecting end and a fifth connecting end. The air strip line is connected with the first connecting end, the second connecting end and the first suspended microstrip line. The first suspended microstrip line comprises a first power division module and a second power division module. The first power division module is used for connecting the air strip line and the third connecting end. The second power division module is used for connecting the air strip line and the phase compensation circuit. The second power division module is further connected with the first microstrip line and the second suspended microstrip line through the phase compensation circuit. The first microstrip line is further connected with the fourth connecting end. The second suspended microstrip line is further connected with the fifth connecting end. The application can realize large power division ratio.

Description

Technical Field

[0001] This invention relates to the field of power divider technology, and particularly to an unequal power divider. Background Technology

[0002] Unequal power dividers have a wide range of applications in mobile communication and radar systems. In many situations, it is required that the radiation field in the horizontal plane be non-axisymmetric. For example, the radiation field strength is weak in mountainous areas and at sea, while the radiation field strength is strong in other directions. This can be achieved using antenna arrays or power dividers, but using unequal power dividers is more cost-effective than antenna arrays. Unequal power dividers can achieve small power ratios, but it is difficult to achieve large power ratios. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an unequal power divider capable of achieving a high power division ratio.

[0004] An unequal power divider according to a first aspect embodiment of the present invention includes:

[0005] The base plate is provided with a first connecting end, a second connecting end, a third connecting end, a fourth connecting end and a fifth connecting end;

[0006] An air ribbon, which is connected to both the first connecting end and the second connecting end.

[0007] The first suspended microstrip line includes a first power divider module and a second power divider module. The first power divider module is used to connect the air strip line and the third connection terminal.

[0008] A phase compensation circuit, wherein the second power divider module is used to connect the phase compensation circuit and the air stripline;

[0009] The first microstrip line is connected to the phase compensation circuit and the fourth connection terminal respectively;

[0010] The second suspended microstrip line is connected to the phase compensation circuit and the fifth connection terminal, respectively.

[0011] The unequal power divider according to embodiments of the present invention has at least the following beneficial effects: by combining an air stripline, a first suspended microstrip line, a first microstrip line, and a second suspended microstrip line in a multi-port structure, the impedance transformation requirements for high power division ratios can be met. Furthermore, the phase compensation circuit ensures the phase consistency of the output signal. In addition, the air stripline and suspended microstrip line have good wideband performance, maintaining relatively stable transmission characteristics over a wide frequency range, while achieving low transmission loss, thus reducing the overall loss of the unequal power divider.

[0012] According to some embodiments of the present invention, the air strip line includes a first five-section bent strip line, a second five-section bent strip line, and a phase compensation structure. The phase compensation structure is used to connect the first end of the first five-section bent strip line and the first connecting end. The second end of the first five-section bent strip line is connected to the second connecting end and the first end of the second five-section bent strip line, respectively. The second end of the second five-section bent strip line is connected to the first suspended microstrip line.

[0013] According to some embodiments of the present invention, the phase compensation circuit includes a first horizontal circuit structure, a first vertical circuit structure, a second horizontal circuit structure, and a second vertical circuit structure. The first horizontal circuit structure is connected to the first connection end and the first end of the first vertical circuit structure, respectively. The second end of the first vertical circuit structure is connected to the first end of the second horizontal circuit structure, and the second vertical circuit structure is connected to the second end of the second horizontal circuit structure and the first end of the first five-section bent strip.

[0014] According to some embodiments of the present invention, the first five-section bent strip includes a first horizontal transmission path, a first vertical transmission path, a second horizontal transmission path, a second vertical transmission path, a third horizontal transmission path, and a third vertical transmission path; the second five-section bent strip includes a fourth horizontal transmission path, a fourth vertical transmission path, a fifth horizontal transmission path, a fifth vertical transmission path, a sixth horizontal transmission path, and a sixth vertical transmission path; a first end of the first horizontal transmission path is connected to the phase compensation circuit; a second end of the first horizontal transmission path is connected to the first end of the first vertical transmission path; a second end of the first vertical transmission path is connected to the first end of the second horizontal transmission path; a second end of the second horizontal transmission path is connected to the first end of the second vertical transmission path; and a second end of the second vertical transmission path... The third horizontal transmission path is connected to the first end of the third horizontal transmission path, the second end of the third horizontal transmission path is connected to the first end of the third vertical transmission path, the third vertical transmission path is connected to the second connection end and the first end of the fourth vertical transmission path, the second end of the fourth vertical transmission path is connected to the first end of the fourth horizontal transmission path, the second end of the fourth horizontal transmission path is connected to the first end of the fifth vertical transmission path, the second end of the fifth vertical transmission path is connected to the first end of the fifth horizontal transmission path, the second end of the fifth horizontal transmission path is connected to the first end of the sixth vertical transmission path, the second end of the sixth vertical transmission path is connected to the first end of the sixth horizontal transmission path, and the second end of the sixth horizontal transmission path is connected to the first power divider module and the second power divider module.

[0015] According to some embodiments of the present invention, the two sides of the first five-section bent strip are respectively a first air cavity and a second air cavity, and the two sides of the second five-section bent strip are respectively a third air cavity and a fourth air cavity. The width of the first air cavity, the second air cavity, the third air cavity and the fourth air cavity are all 3.4 mm, the line width of the first five-section bent strip is 1.22 mm, and the line width of the second five-section bent strip is 1.06 mm.

[0016] According to some embodiments of the present invention, both the first fifth-section bent strip and the second fifth-section bent strip are fixed to the base plate using PTFE supports.

[0017] According to some embodiments of the present invention, the base plate includes a first power distribution area, the first power distribution area including a first ground cavity, a first copper cladding layer and a first intermediate dielectric layer stacked in sequence, the first ground cavity having a first suspension groove, the first suspension groove being covered only by the first intermediate dielectric layer, and the first power distribution module and the second power distribution module being located above the first suspension groove.

[0018] According to some embodiments of the present invention, the base plate includes a second power distribution region, the second power distribution region including a second ground cavity, a second copper cladding layer and a second intermediate dielectric layer stacked in sequence, and the first microstrip line is disposed on the second intermediate dielectric layer.

[0019] According to some embodiments of the present invention, the second grounding cavity is provided with a second suspension groove, the second suspension groove is covered only by the second intermediate dielectric layer, and the second suspension microstrip line is located above the second suspension groove.

[0020] According to some embodiments of the present invention, the depth of the second suspension groove is 0.5 mm, and the linewidth of the second suspension microstrip line is 0.26 mm.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of the unequal power divider provided in an embodiment of the present invention. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0028] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the unequal power divider provided in an embodiment of the present invention.

[0029] It is understood that the unequal power divider includes a base plate 100, an air stripline, a first suspended microstrip line 300, a phase compensation circuit 400, a first microstrip line 500, and a second suspended microstrip line 600. The base plate 100 is provided with a first connection terminal 110, a second connection terminal 120, a third connection terminal 130, a fourth connection terminal 140, and a fifth connection terminal 150. The air stripline is connected to the first connection terminal 110, the second connection terminal 120, and the first suspended microstrip line 300, respectively. The stripline 300 includes a first power divider module 320 and a second power divider module 310. The first power divider module 320 is used to connect the air stripline and the third connection terminal 130. The second power divider module 310 is used to connect the air stripline and the phase compensation circuit 400. The second power divider module 310 is also connected to the first microstrip line 500 and the second suspended microstrip line 600 through the phase compensation circuit 400. The first microstrip line 500 is also connected to the fourth connection terminal 140, and the second suspended microstrip line 600 is also connected to the fifth connection terminal 150.

[0030] It should be noted that by combining the air stripline, the first suspended microstrip line 300, the first microstrip line 500, and the second suspended microstrip line 600 in a multi-port structure, the impedance transformation requirements for high power division ratios can be met. Furthermore, the phase compensation circuit 400 ensures the phase consistency of the output signal. In addition, the air stripline and suspended microstrip line have excellent wideband performance, maintaining relatively stable transmission characteristics over a wide frequency range while achieving low transmission loss, thus reducing the overall loss of the unequal power divider.

[0031] It should be noted that the air strip includes a first five-section bent strip 200, a second five-section bent strip 210, and a phase compensation structure. The phase compensation structure is used to connect the first end of the first five-section bent strip 200 and the first connecting end 110. The second end of the first five-section bent strip 200 is connected to the second connecting end 120 and the first end of the second five-section bent strip 210, respectively. The second end of the second five-section bent strip 210 is connected to the first suspended microstrip line 300. By setting a phase compensation structure, the phase of the first connecting end 110 is kept consistent with that of the first five-section bent strip 200. The phase compensation circuit 400 includes a first horizontal circuit structure, a first vertical circuit structure, a second horizontal circuit structure, and a second vertical circuit structure. The first horizontal circuit structure is connected to the first connecting end 110 and the first end of the first vertical circuit structure, respectively. The second end of the first vertical circuit structure is connected to the first end of the second horizontal circuit structure, and the second vertical circuit structure is connected to the second end of the second horizontal circuit structure and the first end of the first five-section bent strip 200, respectively. Furthermore, the lengths of the first horizontal circuit structure, the first vertical circuit structure, the second horizontal circuit structure, and the second vertical circuit structure can be adjusted according to the distance between the first five-section bent strip 200 and the first connecting point.

[0032] Specifically, the bending parts of the first and fifth bent strip 200 and the second and fifth bent strip 210 are arc-shaped or oblique to reduce impedance abrupt changes at the corners of the strips and avoid deterioration of the standing wave ratio caused by high-frequency signal reflection.

[0033] Specifically, the first five-section bent strip 200 includes a first horizontal transmission path, a first vertical transmission path, a second horizontal transmission path, a second vertical transmission path, a third horizontal transmission path, and a third vertical transmission path. The second five-section bent strip 210 includes a fourth horizontal transmission path, a fourth vertical transmission path, a fifth horizontal transmission path, a fifth vertical transmission path, a sixth horizontal transmission path, and a sixth vertical transmission path. The first end of the first horizontal transmission path is connected to the phase compensation circuit 400. The second end of the first horizontal transmission path is connected to the first end of the first vertical transmission path. The second end of the first vertical transmission path is connected to the first end of the second horizontal transmission path. The second end of the second horizontal transmission path is connected to the first end of the second vertical transmission path. The second vertical transmission path... The second end of the third horizontal transmission path is connected to the first end of the third vertical transmission path. The third vertical transmission path is connected to the second connection end 120 and the first end of the fourth vertical transmission path, respectively. The second end of the fourth vertical transmission path is connected to the first end of the fourth horizontal transmission path, the second end of the fourth horizontal transmission path is connected to the first end of the fifth vertical transmission path, the second end of the fifth vertical transmission path is connected to the first end of the fifth horizontal transmission path, the second end of the fifth horizontal transmission path is connected to the first end of the sixth vertical transmission path, the second end of the sixth vertical transmission path is connected to the first end of the sixth horizontal transmission path, and the second end of the sixth horizontal transmission path is connected to the first power divider module 320 and the second power divider module 310, respectively. Through the multi-bend structure, the phase difference can be compensated by adjusting the physical lengths of the first horizontal transmission path, the first vertical transmission path, the second horizontal transmission path, the second vertical transmission path, the third horizontal transmission path, the third vertical transmission path, the fourth horizontal transmission path, the fourth vertical transmission path, the fifth horizontal transmission path, the fifth vertical transmission path, the sixth horizontal transmission path, and the sixth vertical transmission path, ensuring signal synchronization at the multiple connection ends.

[0034] Furthermore, the first five-section bent strip 200 has a first air cavity and a second air cavity on both sides, and the second five-section bent strip 210 has a third air cavity and a fourth air cavity on both sides. By setting the width of the first air cavity, the second air cavity, the third air cavity and the fourth air cavity to be 3.4 mm, the line width of the first five-section bent strip 200 to be 1.22 mm, and the line width of the second five-section bent strip 210 to be 1.06 mm, a power ratio of 1:1.15 can be achieved.

[0035] Specifically, both the first and fifth bent strip sections 200 and 210 are fixed to the base plate 100 using PTFE support members 201. The PTFE support members 201 have low dielectric loss and stable deformation characteristics, which can reduce the phase deviation of multi-channel signals.

[0036] It should be noted that the base plate 100 includes a first power distribution region 160, which includes a first grounding cavity, a first copper cladding layer, and a first intermediate dielectric layer stacked sequentially. The first grounding cavity has a first suspension slot, and only the first intermediate dielectric layer covers the first suspension slot. The first power distribution module 320 and the second power distribution module 310 are both located above the first suspension slot. Both the first power distribution module 320 and the second power distribution module 310 are microstrip lines. Furthermore, the first power distribution module 320 and the second power distribution module 310 are provided with multiple bends. By setting multiple bends and adjusting the length of the microstrip line, multi-path phase difference is compensated, and phase consistency is maintained.

[0037] It should be noted that the base plate 100 includes a second power distribution region 170, which comprises a second grounding cavity, a second copper cladding layer, and a second intermediate dielectric layer stacked sequentially. The first microstrip line 500 is disposed on the second intermediate dielectric layer. The second grounding cavity has a second suspension groove 171, which is covered only by the second intermediate dielectric layer. The second suspended microstrip line 600 is located above the second suspension groove 171. By setting multiple bends in the first microstrip line 500 and the second suspended microstrip line 600, and by adjusting the lengths of the first microstrip line 500 and the second suspended microstrip line 600, multipath phase differences can be compensated, and phase consistency can be maintained. The intermediate dielectric layer can be a substrate with a dielectric constant of 3.0.

[0038] Furthermore, by setting the depth of the second suspension groove 171 to 0.5 mm and the linewidth of the second suspension microstrip line 600 to 0.26 mm, a power ratio of 4.5 to 1 can be achieved.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An unequal power divider, characterized in that, include: The base plate is provided with a first connecting end, a second connecting end, a third connecting end, a fourth connecting end and a fifth connecting end; An air ribbon, which is connected to the first connecting end and the second connecting end respectively; The first suspended microstrip line includes a first power divider module and a second power divider module. The first power divider module is used to connect the air strip line and the third connection terminal. A phase compensation circuit, wherein the second power divider module is used to connect the phase compensation circuit and the air stripline; The first microstrip line is connected to the phase compensation circuit and the fourth connection terminal respectively; The second suspended microstrip line is connected to the phase compensation circuit and the fifth connection terminal, respectively. The air strip includes a first five-section bent strip, a second five-section bent strip, and a phase compensation structure. The phase compensation structure is used to connect the first end of the first five-section bent strip and the first connecting end. The second end of the first five-section bent strip is connected to the second connecting end and the first end of the second five-section bent strip, respectively. The second end of the second five-section bent strip is connected to the first suspended microstrip line.

2. The unequal power divider according to claim 1, characterized in that, The phase compensation circuit includes a first horizontal circuit structure, a first vertical circuit structure, a second horizontal circuit structure, and a second vertical circuit structure. The first horizontal circuit structure is connected to the first connection end and the first end of the first vertical circuit structure, respectively. The second end of the first vertical circuit structure is connected to the first end of the second horizontal circuit structure, and the second vertical circuit structure is connected to the second end of the second horizontal circuit structure and the first end of the first five-section bent strip.

3. The unequal power divider according to claim 1, characterized in that, The first five-section bent strip includes a first horizontal transmission path, a first vertical transmission path, a second horizontal transmission path, a second vertical transmission path, a third horizontal transmission path, and a third vertical transmission path. The second five-section bent strip includes a fourth horizontal transmission path, a fourth vertical transmission path, a fifth horizontal transmission path, a fifth vertical transmission path, a sixth horizontal transmission path, and a sixth vertical transmission path. The first end of the first horizontal transmission path is connected to the phase compensation circuit. The second end of the first horizontal transmission path is connected to the first end of the first vertical transmission path. The second end of the first vertical transmission path is connected to the first end of the second horizontal transmission path. The second end of the second horizontal transmission path is connected to the first end of the second vertical transmission path. The second end of the second vertical transmission path is connected to the third horizontal transmission path. The first end of the horizontal transmission path is connected, the second end of the third horizontal transmission path is connected to the first end of the third vertical transmission path, the third vertical transmission path is connected to the second connection end and the first end of the fourth vertical transmission path, the second end of the fourth vertical transmission path is connected to the first end of the fourth horizontal transmission path, the second end of the fourth horizontal transmission path is connected to the first end of the fifth vertical transmission path, the second end of the fifth vertical transmission path is connected to the first end of the fifth horizontal transmission path, the second end of the fifth horizontal transmission path is connected to the first end of the sixth vertical transmission path, the second end of the sixth vertical transmission path is connected to the first end of the sixth horizontal transmission path, and the second end of the sixth horizontal transmission path is connected to the first power divider module and the second power divider module.

4. The unequal power divider according to claim 3, characterized in that, The first five-section bent strip has a first air cavity and a second air cavity on each side, and the second five-section bent strip has a third air cavity and a fourth air cavity on each side. The width of the first air cavity, the second air cavity, the third air cavity and the fourth air cavity is 3.4 mm. The line width of the first five-section bent strip is 1.22 mm, and the line width of the second five-section bent strip is 1.06 mm.

5. The unequal power divider according to claim 1, characterized in that, Both the first and second fifth bent strips are fixed to the base plate using PTFE supports.

6. The unequal power divider according to claim 1, characterized in that, The base plate includes a first power distribution area, which includes a first grounding cavity, a first copper cladding layer and a first intermediate dielectric layer stacked in sequence. The first grounding cavity has a first suspension groove, and the first suspension groove is covered only by the first intermediate dielectric layer. The first power distribution module and the second power distribution module are both located above the first suspension groove.

7. The unequal power divider according to claim 1, characterized in that, The base plate includes a second power distribution area, which includes a second grounding cavity, a second copper cladding layer and a second intermediate dielectric layer stacked in sequence, and the first microstrip line is disposed on the second intermediate dielectric layer.

8. The unequal power divider according to claim 7, characterized in that, The second grounding cavity has a second suspension groove, and the second suspension groove is covered only by the second intermediate dielectric layer. The second suspension microstrip line is located above the second suspension groove.

9. The unequal power divider according to claim 8, characterized in that, The second suspension groove has a depth of 0.5 mm and the second suspension microstrip line width is 0.26 mm.

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