TWI650781B - Adjustable output power ratio rat collar coupler - Google Patents

Abstract

The invention relates to a mouse-circle coupler with adjustable output power ratio, which is arranged on a substrate to cover a transmission line group. The transmission line group includes a first transmission line, a second transmission line, a third transmission line, and a fourth transmission line. The first transmission line includes a first main section, a first transversely extending section, a first extending section, and a second extending section. The second transmission line includes a second main section and a branch section. The third transmission line includes a third main section, a second transverse extension section, a third extension section, and a fourth extension section. The fourth transmission line includes a fourth main section and a longitudinal extension section. The second main section forms a first bending portion near the central section, the branch section is located at the outer edge of the second main section and maintains a gap, and the branch section forms a second bending section near the central section. One extension is connected to the second extension, and the second transverse extension is connected to the third extension and the fourth extension, respectively. The second extension and the third extension are connected through the branch, and the longitudinal extension is connected to the second extension. The fourth extension and the first extension are connected to determine the output ratio allocation. It can realize multiple output ratio functions with one circuit, which is very convenient for system construction. It makes the circuit highly supportive and can effectively reduce the overall system construction. Cost of ownership.

Description

Adjustable output power ratio

The invention relates to a rat-coil coupler with an adjustable output power ratio, in particular to a rat-coil coupler technology that can determine the output ratio distribution by connecting up and down or left and right connections of parallel transmission lines.

According to the evolution of human technology, wireless communication systems are rapidly increasing, and the design of high-frequency microwave circuits has attracted even more attention. The use rate and demand in the electronics industry are increasing day by day, making the direction of circuit design shrinking and reducing costs. Therefore, how to increase the adjustability of the circuit function, reduce the circuit size, and maintain good circuit characteristics are the goals of today's high-frequency microwave circuit designers. In addition, with the advancement of human technology due to the accumulation of time, wireless communication systems have attracted attention due to the needs of modern society, whether in digital TV systems, mobile phone communication systems, or global satellite systems. All of them have their applications, and the coupler, as shown in reference [1], plays an important role in the above system. Couplers are mainly used for power distribution; or for power synthesis, there are many types of couplers. For example, branch couplers are shown in reference [2-3], and rat-coil couplers are shown in reference [4]. -7], Lanji coupler is shown in reference [8-9], etc., and can be used in many applications, such as antenna array as shown in reference [10].

In addition, the conventional mouse-circle coupler is mainly composed of three 90-degree transmission lines and a 270-degree transmission line, and the conventional mouse-circle coupler has four ports, which are an input port, an output port, a coupling port, and Isolated port, of which output port | S ₂₁ | and coupling port | S ₄₁ | output power ratio is determined by the transmission line impedance value, the phase difference between the two output signals is 180 degrees, input port | S ₁₁ | and isolated port | S ₃₁ | Below -15dB, because the conventional mouse-circle coupler cannot meet the needs of different environments, it is impossible to adjust the output power ratio of the output port and the coupling port. It can be seen that the circuit design of the conventional mouse-circle coupler is indeed imperfect. There is still room for improvement. Therefore, how to develop a mouse ring coupler technology that can adjust the output power ratio of the output port and the coupling port according to the needs of different environments has become a technology that the relevant industry and academia industry is desperately trying to solve and challenge. Topic.

According to the current knowledge, there has not been a patent or a paper that allows the mouse circle coupler to adjust the output power ratio in response to the needs of different environments. Based on the urgent needs of the electronics industry, the inventors have continued to After hard research and development, a set of technical concepts different from the above technical documents has finally been developed.

The main object of the present invention is to provide a rat-coil coupler with adjustable output power ratio, which is mainly a kind of circuit that realizes various output ratio functions. The mouse-coil coupler is very convenient in the construction of the system, so that the circuit has a high degree of system. It is supportive and can effectively reduce the cost of the entire system construction. Therefore, the output power ratio of the output port and the coupling port can be adjusted according to the needs of different environments. The technical means adopted to achieve the above purpose is based on a substrate overlying a transmission line group, and the transmission line group includes a first transmission line, a second transmission line, a third transmission line, and a fourth transmission line. The first transmission line includes a first main section, a first transverse extension section, a first extension section, and a second extension section, and the second transmission line includes a second main section and a branch section. The third transmission line includes the third main section, the second horizontal extension section, the third extension section, and the fourth extension section. The fourth transmission line includes the fourth main section and the longitudinal extension section. The top edge of the first main section is recessed for the first horizontal section. The first embedded part that accommodates and maintains the gap; the second main part is formed near the central part The first bending part, the branch section is located at the outer edge of the second main section and maintains a gap, and the second section is formed near the central section of the branch section; the bottom of the third main section is recessed for the second transverse extension section to accommodate and A second embedded portion for maintaining a gap; a third embedded portion for receiving a second longitudinally extending segment and maintaining a gap is recessed on the outer side of the fourth main segment, and passes through the first horizontally extending segment and the first extending segment and The second extension and the second transverse extension are connected to the third extension and the fourth extension, respectively, or the second extension and the third extension are connected through the branch, and the longitudinal extension is respectively connected to the fourth extension. And the first extension is connected to determine the output proportion allocation.

10‧‧‧ substrate

20‧‧‧ Transmission line group

21‧‧‧The first transmission line

210‧‧‧first main paragraph

210a‧‧‧The first embedded part

211‧‧‧The first horizontal stretch

212‧‧‧first extension

212a‧‧‧The first rectangular segment

212b‧‧‧First trapezoidal section

213‧‧‧second extension

213a‧‧‧The second rectangular segment

213b‧‧‧Second trapezoidal section

22‧‧‧Second transmission line

220‧‧‧Second Main Section

220a‧‧‧first vertical line segment

220b‧‧‧Second vertical line segment

221‧‧‧ support

222‧‧‧The first bend

222a‧‧‧First horizontal line segment

222b‧‧‧third vertical line segment

222c‧‧‧Second horizontal line segment

222d‧‧‧ Fourth vertical line segment

222e‧‧‧third horizontal line segment

222f‧‧‧Fifth vertical line segment

222g‧‧‧The fourth horizontal line segment

223‧‧‧The second bending part

223a‧‧‧Sixth vertical line segment

223b‧‧‧Fifth horizontal line segment

223c‧‧‧Seventh vertical line segment

223d‧‧‧Sixth horizontal line segment

223e‧‧‧eighth vertical line segment

223f‧‧‧Seventh horizontal line segment

223g‧‧‧ninth vertical line segment

223h‧‧‧eighth horizontal line segment

223i‧‧‧Tenth vertical line segment

23‧‧‧Third transmission line

230‧‧‧ third main paragraph

231‧‧‧Second transverse extension

232‧‧‧third extension

232a‧‧‧The third rectangular segment

232b‧‧‧Third trapezoidal segment

233‧‧‧Fourth Extension

233a‧‧‧Fourth rectangular segment

233b‧‧‧Fourth trapezoidal segment

234‧‧‧Second Embedded Section

24‧‧‧ Fourth Transmission Line

240‧‧‧ Fourth main paragraph

241‧‧‧longitudinal stretch

242‧‧‧Third Embedded Section

30‧‧‧input port

31‧‧‧Output port

32‧‧‧ isolated port

33‧‧‧Coupling Port

d‧‧‧ clearance

FIG. 1 is a schematic structural diagram of an adjustable output power ratio rat-coupling coupler according to the present invention.

FIG. 2 is a schematic diagram of the structure of a traditional mouse-loop coupler.

FIG. 3 is a circuit diagram of a mouse-loop coupler according to the present invention.

FIG. 4 is a schematic diagram of a physical circuit of the mouse-circle coupler of the present invention.

FIG. 5 is a schematic diagram of a physical circuit implemented by the mouse-loop coupler of the present invention connected up and down.

FIG. 6 is a schematic diagram of the frequency response of a circuit implemented by connecting the input of port 1 up and down according to the present invention.

FIG. 7 is a schematic diagram of the frequency response of a circuit implemented by connecting the input of port 3 up and down according to the present invention.

FIG. 8 is a schematic diagram of a physical circuit of left-right connection of the mouse-circle coupler according to the present invention.

FIG. 9 is a schematic diagram of the frequency response of a circuit implemented by the left and right connection of the input of port 1 of the present invention.

FIG. 10 is a schematic diagram of the frequency response of the circuit implemented by the left and right connection of the input of port 3 of the present invention.

In order to allow your reviewers to further understand the overall technical features of the present invention and the technical means for achieving the purpose of the present invention, detailed descriptions are given with specific examples and drawings: In short, the present invention is an adjustable output power ratio Coil coupler, the circuit is based on the traditional mouse circle coupler, and the transmission line is changed to a parallel transmission line structure. The whole output ratio and output power ratio selection can be achieved only through the transmission line connection up and down or left and right connection. The design and simulation and experiment are based on the traditional unequal mouse coil coupler. The output ratio is determined by the vertical connection of the parallel transmission line or the left and right connection. When the input of port 1 is connected, the vertical transmission line is connected to the output ratio 2: 1. Conversely, when the left and right parallel transmission lines are connected, the output ratio changes to 1: 2. The solid circuit is made of a FR-4 circuit board with a thickness of 1.6 mm and a relative dielectric constant of 4.3. The simulation and experimental results are very consistent within the scope of the test experiment, verifying the correctness of this circuit design. The present invention is indeed a novel circuit design method. The circuit structure is shown in Figure 1. The circuit is based on a traditional mouse-circle coupler. The original transmission line is replaced by a parallel transmission line structure. The parallel transmission lines Z1A, Z2B, and Z3C can be used according to the requirements. The output ratio needs to be adjusted. If the transmission line Z2B is connected, the circuit output ratio is a ratio. Conversely, if the transmission lines Z1A and Z3C are connected, the circuit output ratio is changed to another ratio required by the user. The circuit of the invention has the advantages of using a circuit to realize a coupler with multiple output ratios, which is very convenient for system construction, and the circuit has high system supportability, and can effectively reduce the cost of the entire system construction.

Please refer to FIG. 3 to FIG. 4, the embodiment for achieving the main purpose of the present invention includes a substrate 10 and a transmission line group 20 disposed on the substrate 10. The transmission line group 20 includes a first transmission line 21, a second transmission line 22, a third transmission line 23, and a fourth transmission line 24 which are connected in a generally rectangular shape in order. The first transmission line 21 includes a first main section 210, a first transversely extending section 211, a first extending section 212 extending outward from one end of the first main section 210, and an outward extending from the other end of the first main section 210. The second extension of paragraph 213. The second transmission line 22 includes a second main section 220 and a branch section 221. The third transmission line 23 includes a third main section 230, a second transversely extending section 231, a third extending section 232 extending outward from one end of the third main section 230, and an outward extending from the other end of the third main section 230. The fourth extension 233. The fourth transmission line 24 includes a fourth main section 240 and a longitudinally extending section 241. A first embedded portion 210 a is recessed on the top side of the first main section 210 for receiving the first transversely extending section 211 and maintaining a gap d between the first transversely extending section 211 and the first main section 210. The second main section 220 forms a continuous concave-convex undulation first bending portion 222 near the central section, the branch section 221 is located at the outer edge of the second main section 220 and maintains a gap d, and the branch section 221 forms a continuous unevenness near the central section. The second bent portion 223 undulating and corresponding to the shape of the first bent portion 222 and holding the gap d. A second embedded portion 234 is recessed on the bottom edge of the third main section 230 for receiving a second transversely extending section 231 and keeping the second transversely extending section 231 and the third main section 230 with a gap d. A third embedded portion 242 is recessed on the outer side of the fourth main section 240 to accommodate the longitudinally extending section 241 and to maintain the gap d between the longitudinally extending section 241 and the fourth main section 240, so that the first transversely extending section 211 can pass through. Connected to the first extension 212 and the second extension 213, respectively, and the second transverse extension 231 to the third extension 232 and the fourth extension 233, respectively; or through the branch 221 to the second extension 213 and 213, respectively The third extension section 232 is connected and the longitudinal extension section 241 is connected to the fourth extension section 233 and the first extension section 212, respectively, to determine the output proportion distribution.

Then, when one end of the first lateral extension 211 is connected to the first extension 212 and the other end is connected to the second extension 213 and one end of the second lateral extension 231 is connected to the third extension 232 and the other end is connected to the fourth extension When 233 is connected, the output power is distributed as 2: 1. Conversely, when one end of the branch section 221 is connected to the second extension section 213 and the other end is connected to the third extension section 232 and one end of the longitudinal extension section 241 is connected to the fourth extension section 233 and the other end is connected to the first extension section 212, the The ratio of output power is 1: 2.

Specifically, as shown in FIG. 3, the first extension segment 212 includes a first rectangular segment 212 a connected to one end of the first main segment 210 and a first trapezoidal segment 212 b located at a top edge of the first rectangular segment 212 a. The second extension section 213 includes a second rectangular section 213a connected to the other end of the first main section 210 and a second trapezoidal section 213b located on the top edge of the second rectangular section 213a. The first horizontally extending section 211 and the first embedded section 210a are both long rectangular. The area of the first horizontally extending section 211 is slightly smaller than the first embedded section 210a with a gap d. The first extending section 212 and the second extending section. The line width of 213 is about W ₂ = 3.1 mm.

Please refer to FIG. 3, the third extension section 232 includes a third rectangular section 232a connected to one end of the third main section 230 and a third trapezoidal section 232b located on the top edge of the third rectangular section 232a. The fourth extended section 233 includes a fourth rectangular section 233a connected to the other end of the third main section 230 and a fourth trapezoidal section 233b located at the top edge of the fourth rectangular section 233a. The lines of the third extended section 232 and the fourth extended section 233 The width is W ₂ = 3.1 mm.

Please refer to FIG. 3, the second horizontally extending section 231 and the second embedded section 234 are both long rectangular, and the area of the second horizontally extending section 231 is slightly smaller than the second embedded section 234 with a gap d. Both the extension section 241 and the third embedding portion 242 have a long rectangular shape, and the area of the longitudinal extension section 241 is slightly smaller than the third embedding portion 242 with a gap d.

Specifically, as shown in FIG. 3, the second main section 220 includes a first vertical line section 220a connected to the other end of the first transmission line 21 and a second vertical line section 220b connected to one end of the third transmission line 23; the first bent portion 222 includes a first horizontal line segment 222a connecting the end of the first vertical line segment 220a, a third vertical line segment 222b connecting the end of the first vertical line segment 222a, a second horizontal line segment 222c connecting the end of the third vertical line segment 222b, and a connecting first A fourth vertical line segment 222d at the end of the second horizontal line segment 222c, a third horizontal line segment 222e connected to the end of the fourth vertical line segment 222d, a fifth vertical line segment 222f connected to the end of the third vertical line segment 222b, and a terminal connected to the fifth vertical line segment 222f. The fourth horizontal line segment is 222g. As for the second bent portion 223 of the branch section 221, a sixth longitudinal line section 223a, which is located on the outer edge of the first longitudinal line section 220a and maintains the gap d, and one end of the first transmission line 21 maintains the gap d, and a connection A fifth horizontal line segment 223b at the end of the sixth vertical line segment 223a and located at the bottom side edge of the first horizontal line segment 222a and maintaining the gap d, and a third vertical line segment connected to the end of the fifth horizontal line segment 223b. A seventh vertical line segment 223c that maintains the gap d on the outer edge of 222b, a sixth horizontal line segment 223d that connects to the end of the seventh vertical line segment 223c and is located on the upper side edge of the second horizontal line segment 222c and maintains the gap d, and a terminal that connects the sixth horizontal line segment 223d An eighth vertical line segment 223e located on the outer edge of the fourth vertical line segment 222d and maintaining the gap d, a seventh horizontal line segment 223f connected to the end of the eighth vertical line segment 223e and located on the upper edge of the third horizontal line segment 222e and maintaining the gap d, a connection A ninth vertical line segment 223g at the end of the seventh horizontal line segment 223f and located at the outer edge of the fifth vertical line segment 222f and maintaining the gap d, an eighth connecting the end of the ninth vertical line segment 223g and located at the upper edge of the fourth horizontal line segment 222g and maintaining the gap d. The horizontal line segment 223h and a tenth vertical line segment 223i which is connected to the end of the eighth horizontal line segment 223h and is located at the outer edge of the second vertical line segment 220b and maintains a gap d, and whose end maintains a gap with the top edge of one end of the third transmission line 23.

As mentioned above, please refer to FIG. 3, the length of the first vertical line is W ₄ = 7.46 mm, the length of the second vertical line and the sixth vertical line are W ₅ = 7.48 mm, and the length of the third vertical line and The length of the fifth vertical line is W ₆ = 8.6 mm, the length of the fourth vertical line is W ₈ = 9.6 mm, the length of the sixth vertical line is, and the lengths of the seventh and ninth vertical lines are W ₇ = 6mm, the length of the eighth vertical line is W ₈ = 9.6mm, and the length of the tenth vertical line is W ₉ = 8.6mm; the fifth horizontal line segment 223b, the sixth horizontal line segment 223d, the seventh horizontal line segment 223f, and the eighth the length of the horizontal line segment 223h are all L ₅ = 24mm, the first horizontal section 222a, a second horizontal section 222c, 222e and third horizontal section 222g of the length of the fourth horizontal line segments are all L ₆ = 23.4mm. The lengths of the first transmission line 21 and the third transmission line 23 are both L ₁ = 60.39 mm; the lengths of the first main section 210 and the third main section 230 are L ₄ = 46 mm; the first transverse extension section 211 and the second transverse extension The length of the segment 231 is L ₇ = 45 mm, and the line width is W ₁₀ = 0.63 mm; the length of the longitudinally extending segment 241 is W ₁₁ = 45 mm, and the line width is L ₈ = 0.63 mm.

When the ratio of the output power is 2: 1, the impedance of the fourth main section 240 is Z ₁₁ = 86.6Ω, the electrical length is θ = 90 °, and the impedance of the first main section 210 is Z ₂₁ = 61.23Ω, and the electrical length is θ = 90 °; when the ratio of the output power is 1: 2, the impedance of the second main section 220 and the fourth main section 240 are Z ₁₂ = 61.23Ω, the electrical length is θ = 90 °, and the first main section 210 The impedance is Z ₂₂ = 86.6Ω, and the electrical length is θ = 90 °. The impedances of the first transverse extension 211 and the second transverse extension 231 are Z _2B = 209Ω, and the impedances of the longitudinal extension 241 and the branch 221 Both are Z _1A = 209Ω.

In the embodiment of the circuit analysis and design of the present invention, the structure of the traditional mouse ring coupler is shown in Figs. 2 and 4. Port1 is an input port 30, Port2 is an output port 31, Port3 is an isolated port 32, and Port4 is a coupling port 33. , Z ₁ and Z ₂ are transmission line impedances, θ 1 = θ 2 is 90 degrees, and θ 3 is 270 degrees. The circuit analysis takes the adjustable output power ratio rat-coupling coupler with an output power ratio of 2: 1 and 1: 2 as an example for illustration. The circuit architecture is shown in Figure 1. From equations (1) and (2), we can know that when the output ratio is At 2: 1, Z ₁₁ = 86.6Ω, Z ₂₁ = 61.23Ω, according to formulas (3) and (4). When the output ratio is 1: 2, Z ₁₂ = 61.23Ω, Z ₂₂ = 86.6Ω, according to formula (5), (6) It can be seen that Z _1A = 209Ω, Z _2B = 209Ω, Z ₃₁ = Z ₁₁ , Z _3C = Z _1A .

Let Z _O = 50Ω, when the output power ratio is 2: 1 (P21 = 2, P41 = 1), when the output power ratio is 1: 2 (P22 = 1, P42 = 2)

Adjustable output power ratio rat coil coupler design. The circuit characteristics are verified by electromagnetic simulation software. The sheet material is FR4 (thickness 1.6mm) and the relative permittivity is 4.3. The structure is optimized and adjusted as shown in Figure 3. Circuit size: L ₁ = 60.39mm, W ₁ = 52.25mm, L ₂ = 5mm, W ₂ = 3.1mm, L ₃ = 6.13mm, W ₃ = 46mm, L ₄ = 46mm, W ₄ = 7.46mm, L ₅ = 24mm, W _{5 = 7.48mm, L 6 = 23.4mm,} W 6 = 8.6mm, L 7 = 45mm, W 7 = 6mm, L 8 = 0.63mm, W 8 = 9.6mm, W 9 = 8.6mm, W 10 = 0.63mm, W ₁₁ = 45mm. The finished physical circuit after the engraving machine is shown in Figure 4.

Then the network analyzer measures the physical circuit. The structure of the parallel and parallel transmission line connections is shown in Figure 5. The actual and simulation results are compared. The frequency response when the input port is port 1 is shown in Figure 6. The measured frequency is from 0 to 2GHz. 0 to -55dB, in the operating frequency band ( f ₀ = 0.915GHz), | S ₁₁ | and | S ₃₁ | are below -15dB, | S ₂₁ | is -1.72dB, | S ₄₁ | is -4.57dB, both ends The frequency response when the output is 2: 1 and the input port is port 3 is shown in Figure 7. | S ₁₃ | and | S ₃₃ | are below -15dB, | S ₂₁ | is -4.89dB, | S ₄₁ | is -1.73 dB, the output at both ends is 1: 2. The connection of the left and right parallel transmission line structure is shown in Figure 8. The frequency response diagram when the input port is port 1 is shown in Figure 9, | S ₁₁ | and | S ₃₁ | are below -15dB, | S ₂₁ | is -4.79dB, | S ₄₁ | It is -1.68dB, the output at both ends is 1: 2, and the frequency response diagram when the input port is port 3 is shown in Figure 10, | S ₁₃ | and | S ₃₃ | are below -15dB, | S ₂₁ | is -1.93dB, | S ₄₁ | is -4.79dB, and the output at both ends is 2: 1. The above simulation and measurement results are quite close to expectations.

According to the specific embodiments described above, the present invention uses a mouse-circle coupler design with an adjustable output power ratio. The circuit is based on a traditional mouse-circle coupler and changed to a parallel transmission line structure. It only needs to connect the parallel transmission lines up and down. Or connect left and right to produce different output ratios. This article uses two output ratios of 2: 1 and 1: 2 for design, simulation and experiment. The output ratio is determined by connecting the parallel transmission lines up and down or left and right. The up and down connection is the output ratio of 2: 1, and the left and right connection is the output ratio. Change to 1: 2, simulation and actual measurement results are quite close, we can know the feasibility of this circuit, and can be widely used in power distribution systems with different center frequencies.

The above are only possible embodiments of the present invention, and are not intended to limit the present invention. The scope of patents, equivalent implementations of other changes based on the content, features and spirit of the following claims should be included in the scope of patents of the present invention. The structural features specifically defined in the present invention are not found in similar items, and are practical and progressive. They have met the requirements for invention patents. They have filed applications in accordance with the law. I would like to request the Bureau to verify the patents in accordance with the law in order to maintain this document. Applicants' legitimate rights and interests.

references

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[3] I. Sakagami , M. Haga and T. Munehiro , "Reduced branch-line coupler using eight two-step stubs," IEE Proceedings-Microwaves, Antennas and Propagation, Vol. 146, pp.455-460, Dec 1999 .

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Claims (8)

An adaptable output power ratio mouse-circle coupler includes a substrate and a transmission line group disposed on the substrate. The transmission line group includes a first transmission line, a second transmission line, and a A third transmission line and a fourth transmission line; the first transmission line includes a first main section, a first transverse extension section, a first extension section extending outward from one end of the first main section, and a first extension section from the first main section A second extension section extending outward at the other end of the section; the second transmission line includes a second main section and a branch section; the third transmission line includes a third main section, a second horizontal extension section, and a third section from the third section A third extension section extending outward at one end of the main section and a fourth extension section extending outward from the other end of the third main section. The fourth transmission line includes a fourth main section and a longitudinal extension section; A top section of a main section is recessed with a first embedded part for accommodating the first transversely extending section and keeping a gap between the first transversely extending section and the first main section; the second main section is formed near the central section. A continuous concave-convex undulation of the first bending portion, the branch section is located at the outer edge of the second main section and maintains a gap A near-central section of the branch section forms a second bent section that continuously rises and falls, corresponds to the shape of the first bent section, and maintains the gap; the bottom edge of the third main section is recessed with a second transversely extended section A second inserting portion for accommodating and maintaining a gap between the second transversely extending section and the third main section; an outer side of the fourth main section is recessed for receiving the second longitudinally extending section and allowing the second longitudinal section A third embedding portion that maintains a gap between the extended section and the fourth main section; connected to the first extended section and the second extended section through the first horizontally extended section and the second horizontally extended section and the third extended section respectively The extension is connected to the fourth extension; or the branch is connected to the second and third extensions, and the longitudinal extension is connected to the fourth and first extensions, respectively. Determine the output proportion distribution; wherein when one end of the first transverse extension is connected to the first extension and the other end is connected to the second extension, and one end of the second transverse extension is connected to the third extension and the other end When connected to the fourth extension, the output power ratio is 2: 1; when one end of the branch is connected to the second extension, When the extension section is connected and the other end is connected to the third extension section, and one end of the longitudinal extension section is connected to the fourth extension section and the other end is connected to the first extension section, the output power ratio is distributed as 1: 2. The adaptable output power ratio mouse-circle coupler according to claim 1, wherein the first extension section includes a first rectangular section connected to one end of the first main section and a top edge of the first rectangular section. A first trapezoidal segment; the second extension segment includes a second rectangular segment connected to the other end of the first main segment and a second trapezoidal segment located on the top edge of the second rectangular segment; the first transversely extending segment and the first The embedded portions are all long rectangular, and the area of the first transverse extension is slightly smaller than the first embedded portion and has the gap. The line widths of the first extension and the second extension are W ₂ = 3.1. mm. The adjustable output power ratio mouse-circle coupler according to claim 1, wherein the third extension section includes a third rectangular section connected to one end of the third main section and a third rectangular section located at a top edge of the third rectangular section. A third trapezoidal segment; the fourth extension segment includes a fourth rectangular segment connected to the other end of the third main segment and a fourth trapezoidal segment located on the top edge of the fourth rectangular segment; the second transversely extending segment and the second The embedded portions are all long rectangular, and the area of the second horizontally extending portion is slightly smaller than the second embedded portion and has the gap. The line widths of the third and fourth extensions are W ₂ = 3.1. mm. The adjustable output power ratio mouse-circle coupler according to claim 1, wherein the longitudinally extending section and the third embedded section are both long rectangular, and the area of the longitudinally extending section is slightly smaller than the third embedded section. Partly with this gap. The adjustable output power ratio mouse-circle coupler according to claim 1, wherein the second main section includes a first vertical line section connected to the other end of the first transmission line and a second vertical line connected to one end of the third transmission line. Line segment; the first bend includes a first horizontal line segment connecting the end of the first vertical line segment, a third vertical line segment connecting the end of the first horizontal line segment, and a second horizontal line segment connecting the end of the third vertical line segment A fourth vertical line segment connecting the end of the second horizontal line segment, a third horizontal line segment connecting the end of the fourth vertical line segment, a fifth vertical line segment connecting the end of the third vertical line segment and a fifth vertical line segment A fourth horizontal line segment at the end; the second bent portion of the branch segment includes a sixth vertical line segment located at the outer edge of the first vertical line segment and maintaining the gap, and one end of the first vertical line segment maintaining a gap with the other end of the first transmission line A fifth horizontal line segment that connects the end of the sixth vertical line segment and is located on the bottom side edge of the first horizontal line segment and maintains the gap; a fifth horizontal line segment that connects the end of the fifth horizontal line segment and is located on the outer edge of the third vertical line segment and maintains the gap The seventh vertical line segment, one connection A sixth horizontal line segment at the end of the seventh vertical line segment and located at the upper side edge of the second horizontal line segment and maintaining the gap, an eighth vertical line connecting the end of the sixth horizontal line segment and located at the outer edge of the fourth vertical line segment and maintaining the gap. A line segment, a seventh horizontal line segment that connects the end of the eighth vertical line segment and is located on the upper side edge of the third horizontal line segment and maintains the gap, and a seventh horizontal line segment that connects the end of the seventh horizontal line segment and is located on the outer edge of the fifth vertical line segment and maintains the gap A ninth vertical line segment, an eighth horizontal line segment that connects the end of the ninth vertical line segment and is located on the upper side edge of the fourth horizontal line segment and maintains the gap, and an eighth horizontal line segment that connects the end of the eighth horizontal line segment and is located on the outer edge of the second vertical line segment A tenth longitudinal line segment that maintains the gap and whose end maintains a gap with the top edge of one end of the third transmission line. The adjustable output power ratio mouse-circle coupler according to claim 5, wherein the length of the first vertical line is W ₄ = 7.46 mm, and the lengths of the second vertical line and the sixth vertical line are W ₅ = 7.48 mm, the length of the third vertical line and the fifth vertical line are both W ₆ = 8.6 mm, the length of the fourth vertical line is W ₈ = 9.6 mm, and the length of the sixth vertical line is, the The length of the seventh vertical line and the ninth vertical line are W ₇ = 6 mm, the length of the eighth vertical line is W ₈ = 9.6 mm, and the length of the tenth vertical line is W ₉ = 8.6 mm; the fifth The length of the horizontal line segment, the sixth horizontal line segment, the seventh horizontal line segment, and the eighth horizontal line segment is L ₅ = 24 mm. The first horizontal line segment, the second horizontal line segment, the third horizontal line segment, and the fourth The lengths of the horizontal line segments are all L ₆ = 23.4mm. The adjustable output power ratio mouse-circle coupler according to claim 1, wherein the lengths of the first transmission line and the third transmission line are both L ₁ = 60.39mm; the first main section and the third main section The length of each is L ₄ = 46mm; the length of the first and second transverse stretches is L ₇ = 45mm, and the line width is W ₁₀ = 0.63mm; the length of the longitudinal stretch is W ₁₁ = 45mm, the line width is L ₈ = 0.63mm. The adjustable output power ratio rat-circle coupler according to claim 1, wherein when the output ratio is 2: 1, the impedance of the fourth main section is Z ₁₁ = 86.6Ω, and the electrical length is θ = 90 ° , The impedance of the first main section is Z ₂₁ = 61.23Ω, and the electrical length is θ = 90 °; when the output ratio is 1: 2, the impedances of the second and fourth main sections are Z ₁₂ = 61.23Ω, the electrical length is θ = 90 °, the impedance of the first main section is Z ₂₂ = 86.6Ω, the electrical length is θ = 90 °, the impedances of the first transverse extension section and the second transverse extension section are both It is Z _2B = 209Ω, and the impedance of the longitudinal extension and the branch is Z _1A = 209Ω.