Four-way power combiner

Abstract

The utility model relates to a four-path power combiner, which comprises an impedance reducing converter and an impedance increasing converter, and is characterized in that the impedance reducing converter is used for converting impedance into 1 / 2 of original impedance and outputting two paths of signals; and the impedance-increasing converter is connected with two output ends of the impedance-decreasing converter, and is used for converting the impedance into the original impedance while completing power synthesis. The impedance reduction converter comprises two coaxial lines, two magnetic rings and two isolation resistors; the two magnetic rings are respectively arranged on the two coaxial lines; the two isolation resistors are respectively bridged on the outer conductors of the two coaxial lines; the two output ends comprise a first output end and a second output end, the outer conductor and the inner conductor of one of the two coaxial lines are connected with the first output end, and the outer conductor and the inner conductor of the other coaxial line are connected with the second output end. The four-way power combiner is simple in circuit structure, small in circuit transmission loss and wide in working frequency, not only effectively improves the performance, but also reduces the process cost, can be widely applied to multiple fields, and has wide popularization value.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of power combiners, and more specifically, to a four-way power combiner. Background Art

[0002] At present, the circuit structure of the four-way power combiner is relatively complex, and the circuit transmission loss is relatively large compared to current requirements. Summary of the invention

[0003] One purpose of an embodiment of the present application is to provide a four-way power combiner to solve the problem that the current four-way power combiner has a relatively complex circuit structure and a relatively large circuit transmission loss compared to current requirements.

[0004] According to the first aspect of the present application, a four-way power combiner is provided, comprising: an impedance-reducing converter and an impedance-raising converter; the impedance-reducing converter is used to change the impedance to 1 / 2 of the original impedance and output signals in two ways; the impedance-raising converter is connected to two output ends of the impedance-reducing converter, and is used to change the impedance back to the original impedance while completing power synthesis; the impedance-reducing converter comprises two coaxial lines, two magnetic rings and two isolation resistors; the two magnetic rings are respectively arranged on the two coaxial lines; the two isolation resistors are respectively bridged on the outer conductors of the two coaxial lines; the two output ends of the impedance-reducing converter comprise a first output end and a second output end, the outer conductor and the inner conductor of one of the two coaxial lines are connected to the first output end, and the outer conductor and the inner conductor of the other of the two coaxial lines are connected to the second output end.

[0005] Optionally, the impedance-boosting converter includes: four coaxial lines, a first magnetic ring, a first isolation resistor and an output end of the impedance-boosting converter; the four coaxial lines include: a first coaxial line, a second coaxial line, a third coaxial line and a fourth coaxial line; the first magnetic ring is arranged on the first coaxial line; the inner conductor of the first coaxial line is connected in parallel with the inner conductor of the second coaxial line and then connected to the second output end, the inner conductor of the third coaxial line is connected in parallel with the inner conductor of the fourth coaxial line and then connected to the first output end, the inner conductor of the third coaxial line is connected to the outer conductor of the first coaxial line, and the outer conductor of the fourth coaxial line is connected to the inner conductor of the second coaxial line; the first isolation resistor is connected across the outer conductors of the first coaxial line and the fourth coaxial line, and the inner conductors of the first coaxial line and the fourth coaxial line are connected to the output end of the impedance-boosting converter.

[0006] Optionally, the impedance-boosting converter includes: two coaxial lines, two magnetic rings, a second isolation resistor and an output end of the impedance-boosting converter; the two coaxial lines include a fifth coaxial line and a sixth coaxial line; the two magnetic rings include a second magnetic ring and a third magnetic ring; the second magnetic ring is arranged on the fifth coaxial line, and the third magnetic ring is arranged on the sixth coaxial line; the second isolation resistor is connected across the first output end and the second output end; the inner conductors of the fifth coaxial line and the sixth coaxial line are connected to the output end of the impedance-boosting converter, the other end of the inner conductor of the fifth coaxial line is connected to the first output end, and the other end of the inner conductor of the sixth coaxial line is connected to the second output end.

[0007] Optionally, the impedance of the coaxial line is 50Ω.

[0008] Optionally, the impedance of the coaxial line is 75Ω.

[0009] One beneficial effect of the embodiment of the present application is that the four-way power combiner only includes two-stage circuit conversion units and no impedance conversion unit, and can realize power synthesis while increasing impedance. The circuit structure is simple, the circuit transmission loss is small, and the operating frequency is wide, which not only effectively improves the performance, but also reduces the process cost. It can be widely used in multiple fields and has wide promotion value.

[0010] Other features and advantages of the embodiments of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the embodiments of the present application.

[0012] Figure 1 A schematic diagram of a related technology of this application;

[0013] Figure 2 is a schematic structural diagram of a four-way power combiner according to an embodiment of the present application;

[0014] Figure 3 is a structural schematic diagram of a four-way power combiner according to another embodiment of the present application;

[0015] Figure 4 4 is a schematic structural diagram of a four-way power combiner according to another embodiment of the present application. DETAILED DESCRIPTION

[0016] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0017] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0018] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0019] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0020] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0021] Figure 1 This is a schematic diagram of a related technology of the present application.

[0022] like Figure 1 As shown, the circuit structure includes three-stage circuit units, namely two-stage impedance reduction synthesis units (corresponding to Figure 1 The first level impedance reduction synthesis unit 11 and the second level impedance reduction synthesis unit 12) and the first level impedance conversion unit 13. Figure 1 , the impedance of the coaxial line 110 in the first-stage impedance reduction synthesis unit 11 is 50Ω, and the isolation resistor 111 is 100Ω. The impedance of the coaxial line 120 in the second-stage impedance reduction synthesis unit 12 is 25Ω, and the isolation resistor 121 is 50Ω. The impedance transformation unit 13 is provided with two coaxial lines 130 with inner conductors in parallel, and the impedance is 25Ω, and a magnetic ring is provided on one of the coaxial lines. The outer conductor of the coaxial line 130 without a magnetic ring is grounded. Its synthesis path is first synthesized twice, and the impedance is continuously reduced from 50Ω to 12.5Ω (see Figure 1 The impedance is then increased from 12.5Ω to 50Ω by the impedance conversion unit 13. The structure of the synthetic link is relatively complex and needs to undergo two impedance reduction conversions.

[0023] Hereinafter, various embodiments and examples according to the present application are described with reference to the accompanying drawings.

[0024] Figure 2 FIG. 1 is a schematic diagram of a four-way power combiner according to an embodiment of the present application. Figure 2 As shown, the four-way power combiner 200 includes: a down-impedance converter 210 and a up-impedance converter 220 .

[0025] The impedance-reducing converter 210 is used to reduce the impedance to 1 / 2 of the original impedance and output signals in two paths; the impedance-raising converter 220 is connected to the two output ends of the impedance-reducing converter 210 and is used to complete power synthesis and simultaneously reduce the impedance to the original impedance.

[0026] The impedance reduction transformer 210 includes two coaxial lines (such as Figure 2 The coaxial line 211 and the coaxial line 212 in the middle), two magnetic rings (such as Figure 2 The magnetic ring 213 and the magnetic ring 214) and two isolation resistors (such as Figure 2 The isolation resistor 215 and the isolation resistor 216 in the embodiment of the present invention are referred to as the coaxial line.

[0027] The two magnetic rings are respectively arranged on two coaxial lines. Figure 2 As shown, the magnetic ring 213 is arranged on the coaxial line 211 , and the magnetic ring 214 is arranged on the coaxial line 212 .

[0028] Two isolation resistors are connected across the outer conductors of the two coaxial cables. Figure 2 As shown, the isolation resistor 215 is connected across the outer conductor and the inner conductor of the coaxial line 211 , and the isolation resistor 216 is connected across the outer conductor and the inner conductor of the coaxial line 212 .

[0029] The two output ends of the impedance reduction transformer 210 include a first output end 217 and a second output end 218. Figure 2 The outer conductor and the inner conductor of the coaxial line 211 in the first output terminal 217 are connected, and the other one of the two coaxial lines (such as Figure 2 The outer conductor and the inner conductor of the coaxial line 212 are connected to the second output end 218.

[0030] In some embodiments, Figure 3 As shown, the impedance-raising transformer 220 includes: four coaxial lines (such as Figure 3 a first coaxial line 311 , a second coaxial line 312 , a third coaxial line 313 and a fourth coaxial line 314 ), a first magnetic ring 320 , a first isolation resistor 330 and an output end 340 of a boost-resistance converter.

[0031] The first magnetic ring 320 is disposed on the first coaxial line 311 .

[0032] The inner conductor of the third coaxial line 313 is connected in parallel with the inner conductor of the fourth coaxial line 314 and connected to the first output terminal 217. The inner conductor of the first coaxial line 311 is connected in parallel with the inner conductor of the second coaxial line 312 and connected to the second output terminal 218. The inner conductor of the third coaxial line 313 is connected to the outer conductor of the first coaxial line 311. The outer conductor of the fourth coaxial line 314 is connected to the inner conductor of the second coaxial line 312.

[0033] The first isolation resistor 330 is connected across the outer conductors of the first coaxial line 311 and the fourth coaxial line 314 , and the inner conductors of the first coaxial line 311 and the fourth coaxial line 314 are connected to the output end 340 of the boost-impedance converter.

[0034] In some embodiments, the resistance of the first isolation resistor 330 is 50Ω.

[0035] In some embodiments, Figure 4 As shown, the impedance-raising transformer 220 includes: two coaxial lines (such as Figure 4 The fifth coaxial line 411 and the sixth coaxial line 412), two magnetic rings (such as Figure 4 a second magnetic ring 421 and a third magnetic ring 422 ), a second isolation resistor 430 and an output end 440 of the boost-resistance converter.

[0036] The second magnetic ring 421 is disposed on the fifth coaxial line 411 , and the third magnetic ring 422 is disposed on the sixth coaxial line 412 .

[0037] The second isolation resistor 430 is connected between the first output terminal 217 and the second output terminal 218 .

[0038] One end of the inner conductor of the fifth coaxial line 411 and the sixth coaxial line 412 is connected to the output terminal 440 of the boost-resistance converter. The other end of the inner conductor of the fifth coaxial line 411 is connected to the first output terminal 217, and the other end of the sixth coaxial line 412 is connected to the second output terminal 218.

[0039] The outer conductors of the fifth coaxial line 411 and the sixth coaxial line 412 are grounded at one end.

[0040] In some embodiments, the resistance of the second isolation resistor is 50Ω.

[0041] In some embodiments, Figure 2-4 The impedance of the coaxial line shown may be 50Ω in order to enable higher power.

[0042] In some embodiments, Figure 2-4 The impedance of the coaxial line shown may be 75Ω to achieve a wider range of applications, for example, it may be applied to broadcasting facilities.

[0043] Figure 4 The power combiner shown is compared to Figure 3 The power combiner shown can achieve a wider frequency band (2-30MHz); Figure 3 The power synthesizer can achieve a frequency band of 5-20 MHz.

[0044] The four-way power combiner in the embodiment of the present application only includes two-stage circuit conversion units and no impedance conversion unit, and can realize power synthesis while increasing impedance. The circuit structure is simpler than the prior art.

[0045] The four-way power combiner in the embodiment of the present application has an operating frequency range of 2MHz-50MHz, which is relatively wide. Figure 1 The loss of the structure shown in is 0.4dB, and the structure in the embodiment of the present application can reduce the loss to 0.2dB, achieving smaller circuit transmission loss.

[0046] The four-way power combiner in the embodiment of the present application not only effectively improves the performance, but also reduces the process cost, has low insertion loss, good isolation, and is easy to achieve wide-band and high-power synthesis. It can be widely used in multiple fields and has broad promotion value.

[0047] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present application is defined by the appended claims.

Claims

1. A four-way power combiner, characterized in that: include: Impedance-dropping converter and impedance-raising converter; The impedance reduction converter is used to change the impedance to 1 / 2 of the original impedance and output signals in two paths; The impedance-raising converter is connected to two output ends of the impedance-lowering converter, and is used to complete power synthesis and change the impedance back to the original impedance at the same time; The impedance reduction transformer comprises two coaxial lines, two magnetic rings and two isolation resistors; the two magnetic rings are respectively arranged on the two coaxial lines; the two isolation resistors are respectively connected across the outer conductors of the two coaxial lines; The two output ends of the impedance reduction transformer include a first output end and a second output end, the outer conductor and the inner conductor of one of the two coaxial lines are connected to the first output end, and the outer conductor and the inner conductor of the other of the two coaxial lines are connected to the second output end.

2. The four-way power combiner according to claim 1, characterized in that: The impedance-raising converter comprises: four coaxial lines, a first magnetic ring, a first isolation resistor and an output end of the impedance-raising converter; The four coaxial lines include: a first coaxial line, a second coaxial line, a third coaxial line and a fourth coaxial line; the first magnetic ring is arranged on the first coaxial line; The inner conductor of the first coaxial line is connected in parallel with the inner conductor of the second coaxial line and then connected to the second output end; the inner conductor of the third coaxial line is connected in parallel with the inner conductor of the fourth coaxial line and then connected to the first output end; the inner conductor of the third coaxial line is connected to the outer conductor of the first coaxial line; and the outer conductor of the fourth coaxial line is connected to the inner conductor of the second coaxial line; The first isolation resistor is connected across the outer conductors of the first coaxial line and the fourth coaxial line, and the inner conductors of the first coaxial line and the fourth coaxial line are connected to the output end of the boost-resistance converter.

3. The four-way power combiner according to claim 1, characterized in that: The impedance-raising converter comprises: two coaxial lines, two magnetic rings, a second isolation resistor and an output end of the impedance-raising converter; The two coaxial lines include a fifth coaxial line and a sixth coaxial line; the two magnetic rings include a second magnetic ring and a third magnetic ring; the second magnetic ring is arranged on the fifth coaxial line, and the third magnetic ring is arranged on the sixth coaxial line; The second isolation resistor is connected between the first output terminal and the second output terminal; One end of the inner conductor of the fifth coaxial line and the sixth coaxial line is connected to the output end of the impedance-boosting converter, the other end of the inner conductor of the fifth coaxial line is connected to the first output end, and the other end of the inner conductor of the sixth coaxial line is connected to the second output end.

4. The four-way power combiner according to any one of claims 1 to 3, characterized in that: The impedance of the coaxial line is 50Ω.

5. The four-way power combiner according to any one of claims 1 to 3, characterized in that: The impedance of the coaxial line is 75Ω.

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