Broadband high-power broadband coupler

Abstract

The broadband high-power broadband coupler comprises a shell, a transmission coupling assembly and a heat dissipation assembly, the interior of the shell is hollow, and the shell is provided with an input end, an output end and a coupling end; the transmission coupling assembly is arranged in the shell, and the connecting end of the transmission coupling assembly is electrically connected with the input end, the output end and the coupling end and is used for signal transmission and coupling; the heat dissipation assembly is arranged on the shell, the heat dissipation end is communicated with the interior of the shell, a heat dissipation hole opposite to the heat dissipation assembly is formed in the shell, the transmission coupling assembly is located between the heat dissipation hole and the heat dissipation assembly, and the heat dissipation assembly brings heat generated by a heating resistor in the transmission coupling assembly out of the shell. According to the broadband coupler, heat generated by a heating resistor in the transmission coupling assembly can be effectively brought out of the shell, the internal temperature of the shell is prevented from being too high, it is guaranteed that the coupler works in a stable temperature environment, and the signal quality and the system stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of coupler technology, and in particular to a broadband high-power broadband coupler. Background Technology

[0002] With the rapid development of communication technology, semiconductor technology, and other technologies, the performance requirements for high-power couplers are becoming increasingly stringent. In many application scenarios, such as RF power supplies, wireless communication, and radar transmission systems, couplers need to have the characteristics of wide bandwidth and high power capacity.

[0003] The ultra-wideband high-power dual directional coupler disclosed in CN217035945U includes an upper housing and a lower housing. An upper cavity slot and a lower cavity slot are formed on two opposite surfaces of the upper housing and the lower housing, respectively. The upper cavity slot and the lower cavity slot constitute a cavity structure. A coaxial coupling structure is provided inside the cavity structure. A wire coupling structure is clamped between the upper housing and the lower housing on both sides of the coaxial coupling structure.

[0004] When operating at high power, the coupler generates a lot of heat. Existing couplers have poor heat dissipation methods, which leads to a decline in device performance and makes it impossible to ensure that the coupler operates in a stable temperature environment, thus reducing signal quality and system stability. Utility Model Content

[0005] In view of this, the present invention proposes a broadband high-power broadband coupler, which can effectively carry the heat generated by the heating resistor device in the transmission coupling component out of the housing, prevent the internal temperature of the housing from being too high, ensure that the coupler works in a stable temperature environment, and improve the signal quality and system stability.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a broadband high-power broadband coupler, comprising:

[0007] The housing is hollow inside and has an input terminal, an output terminal, and a coupling terminal.

[0008] A transmission coupling component is housed within the housing, and its connection ends are electrically connected to the input end, output end, and coupling end, respectively, for signal transmission and coupling.

[0009] A heat dissipation component is mounted on the housing, and the heat dissipation end is connected to the inside of the housing. The housing has heat dissipation holes that are opposite to the heat dissipation component. A transmission coupling component is located between the heat dissipation holes and the heat dissipation component. The heat dissipation component carries the heat generated by the heating resistor device in the transmission coupling component out of the housing.

[0010] Based on the above technical solutions, preferably, the number of heat dissipation components is several, and the several heat dissipation components are arranged evenly at equal intervals along the length direction of the shell, and the number of heat dissipation holes is multiple, and the multiple heat dissipation holes are distributed in an array rectangle and are set corresponding to the positions of the heat dissipation components.

[0011] Based on the above technical solutions, preferably, the transmission coupling component includes a transmission line and a coupling element, wherein,

[0012] The two ends of the transmission line are electrically connected to the input and output ends respectively, and are used to transmit the input signal into the housing;

[0013] The two ends of the coupler are electrically connected to the transmission line and the coupling end, respectively, and are used to couple the input signal.

[0014] Based on the above technical solution, preferably, the housing is provided with at least two sampling resistor partitions to divide the housing into at least three non-communicating cavities. The sampling resistor partitions are provided with perforations, and the two ends of the transmission line pass through the corresponding perforations and are electrically connected to the input end and the output end respectively.

[0015] Based on the above technical solutions, preferably, the input end, the output end, the perforation, and the transmission line are all on the same axis.

[0016] Based on the above technical solutions, preferably, the outer side of the transmission line abuts against the inner wall of the perforation and is in a taut state.

[0017] Based on the above technical solutions, preferably, it also includes several isolation ferrite magnetic rings, all of which are disposed in the middle cavity and sleeved on the outside of the transmission line for filtering the signal.

[0018] Based on the above technical solution, preferably, the number of coupling elements is two, and the two coupling elements are respectively disposed in the cavities on both sides. The number of coupling ends is two, and the two ends of the coupling element near the input end are electrically connected to the input end and the corresponding coupling end, respectively. The two ends of the coupling element near the output end are electrically connected to the output end and the corresponding coupling end, and are arranged symmetrically.

[0019] Based on the above technical solutions, preferably, each coupling element includes a first resistor, a second resistor, a third resistor, a fourth resistor, and a fifth resistor. The input terminal is electrically connected to the first resistor and the output terminal of the coupling elements on both sides, respectively. The other end of the first resistor on both sides is electrically connected to the corresponding second resistor, the other end of the second resistor is electrically connected to the corresponding third resistor, the other end of the third resistor is electrically connected to the corresponding coupling terminal and the fourth resistor, the other ends of the fourth resistors on both sides are connected in common and electrically connected to the corresponding fifth resistors, and the other end of the fifth resistor is grounded.

[0020] Based on the above technical solutions, preferably, the heat dissipation component is a cooling fan.

[0021] The broadband high-power broadband coupler of this invention has the following advantages over the prior art:

[0022] (1) By setting the heat dissipation components and heat dissipation holes relative to each other, the heat generated by the heating resistor device in the transmission coupling component can be effectively carried out of the housing, preventing the internal temperature of the housing from being too high, ensuring that the coupler works in a stable temperature environment, and improving the signal quality and system stability.

[0023] (2) The isolation ferrite magnetic ring can filter out high-frequency noise and only allow signals in the effective signal frequency band to pass through, thereby improving the signal-to-noise ratio and making the output signal clearer and more accurate. In addition, the ferrite magnetic ring has different impedance characteristics for signals of different frequencies, which can make the isolation ferrite magnetic ring have a good filtering effect in a wide frequency range.

[0024] (3) By reasonably selecting the resistance values ​​of the first, second and third resistors, the signal amplitude coupled from the input end to the coupling end can be controlled; the grounding loop composed of the fourth and fifth resistors can effectively eliminate common-mode noise and interference in the circuit, making the coupled signal purer and more stable. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional view of the broadband high-power broadband coupler of this utility model;

[0027] Figure 2 This is a side view of the broadband high-power broadband coupler of this utility model;

[0028] Figure 3 This is another side view of the broadband high-power broadband coupler of this utility model.

[0029] Figure 4 This is a circuit diagram of the coupling element of the broadband high-power broadband coupler of this utility model. Detailed Implementation

[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0031] like Figure 1-4 As shown, this utility model discloses a broadband high-power broadband coupler, comprising a housing 1, a transmission coupling component 2, and a heat dissipation component 3. The housing 1 is hollow inside and has an input terminal 11, an output terminal 12, and a coupling terminal 13. The transmission coupling component 2 is disposed inside the housing 1, and its connection terminals are electrically connected to the input terminal 11, the output terminal 12, and the coupling terminal 13, respectively, for signal transmission and coupling. The heat dissipation component 3 is disposed on the housing 1, and its heat dissipation end is connected to the interior of the housing 1. The housing 1 has heat dissipation holes 100 that are opposite to the heat dissipation component 3. The transmission coupling component 2 is located between the heat dissipation holes 100 and the heat dissipation component 3. The heat dissipation component 3 carries away the heat generated by the heating resistor device in the transmission coupling component 2 from the housing 1.

[0032] It should be noted that, through the cooperation of the heat dissipation component 3 and the heat dissipation hole 100, the heat generated by the heating resistor device in the transmission coupling component 2 can be carried out of the housing 1 in a timely and effective manner, which can prevent the internal temperature of the housing 1 from being too high, and help maintain the coupler to work in a stable temperature environment, thus ensuring the signal quality and system stability.

[0033] In this embodiment, there are several heat dissipation components 3, and these heat dissipation components 3 are arranged evenly at equal intervals along the length of the housing 1. There are also multiple heat dissipation holes 100, which are arranged in an array of rectangles and are positioned corresponding to the heat dissipation components 3.

[0034] It should be noted that several heat dissipation components 3 are arranged evenly at equal intervals along the length of the housing 1, which can make the heat distribution inside the housing 1 more uniform. During signal transmission and coupling, excessive local heat concentration can be avoided, ensuring that the entire coupler operates at a stable operating temperature.

[0035] The transmission coupling component 2 in this embodiment includes a transmission line 21 and a coupling element 22. The two ends of the transmission line 21 are electrically connected to the input end 11 and the output end 12, respectively, for transmitting the input signal into the housing 1. The two ends of the coupling element 22 are electrically connected to the transmission line 21 and the coupling end 13, respectively, for coupling the input signal.

[0036] It should be noted that the transmission line 21 directly connects the input terminal 11 and the output terminal 12, establishing an efficient and stable transmission channel for the signal, ensuring that the input signal can be transmitted to the housing 1 with low loss and reach the output terminal 12; the coupling element 22 connects the transmission line 21 and the coupling terminal 13, and precisely controls the signal coupling ratio through its own parameter design to achieve directional coupling of the signal, and has good isolation performance to prevent mutual interference of signals.

[0037] In this embodiment, the housing 1 is provided with at least two sampling resistor partitions 14 to divide the housing 1 into at least three non-communicating cavities 110. The sampling resistor partitions 14 are provided with through holes 120. The two ends of the transmission line 21 pass through the corresponding through holes 120 and are electrically connected to the input terminal 11 and the output terminal 12 respectively.

[0038] It should be noted that at least two sampling resistor partitions 14 are set inside the housing 1 to divide the internal space of the housing 1 into at least three non-interconnected cavities 110. Different cavities 110 can provide relatively independent spaces for different circuit components. Through the cavity division, these circuits can be placed in different cavities 110, which greatly reduces the possibility of electromagnetic crosstalk and improves the purity and stability of the signal. The through hole 120 can ensure that the transmission line 21 can pass through smoothly and reduce the damage to the partition isolation effect.

[0039] In this embodiment, the input terminal 11, the output terminal 12, the through hole 120, and the transmission line 21 are all on the same axis; and the outer side of the transmission line 21 abuts against the inner wall of the through hole 120 and is in a taut state.

[0040] It should be noted that when the signal emitted from the input terminal 11 passes through the transmission line 21 and the through hole 120 along the same axis to reach the output terminal 12, the signal propagation path is the most direct, reducing refraction and other phenomena caused by path bending or offset, thereby ensuring the integrity and stability of the signal. Furthermore, the outer side of the transmission line 21 abuts against the inner wall of the through hole 120 and is in a taut state, ensuring the mechanical stability and electrical performance of the transmission line 21. The taut and abutting transmission line 21 can avoid unnecessary contact or friction with surrounding components due to its own shaking or loosening, reducing the impact of mechanical vibration on signal transmission. This can ensure the electromagnetic shielding effect between the transmission line 21 and the inner wall of the through hole 120, preventing external electromagnetic interference from entering the interior of the transmission line 21, while also reducing the leakage of the electromagnetic field of the transmission line 21 itself, thus improving the quality of signal transmission.

[0041] This embodiment also includes several isolation ferrite magnetic rings 4, which are all disposed in the middle cavity 110 and sleeved on the outside of the transmission line 21 for filtering the signal.

[0042] It should be noted that when the signal current passes through the ferrite ring 4 sleeved on the transmission line 21, according to the law of electromagnetic induction, the changing current will generate a changing magnetic field inside the ring. Ferrite materials exhibit different impedance characteristics to magnetic fields of different frequencies. For high-frequency interference signals, the ferrite ring 4 exhibits a high impedance, which is equivalent to a high-frequency resistor, thus hindering the passage of high-frequency interference signals. However, for the effective signal frequency to be transmitted, the impedance of the ferrite ring 4 is relatively low, allowing the effective signal to pass smoothly.

[0043] In this embodiment, the isolation ferrite magnetic ring 4 can filter out high-frequency noise and only allow signals in the effective signal frequency band to pass through, thereby improving the signal-to-noise ratio and making the output signal clearer and more accurate. Furthermore, the ferrite magnetic ring 4 has different impedance characteristics for signals of different frequencies, which allows the isolation ferrite magnetic ring 4 to have a good filtering effect over a wide frequency range.

[0044] In this embodiment, there are two coupling elements 22, which are respectively disposed in the cavities 110 on both sides. There are two coupling ends 13, and the two ends of the coupling element 22 near the input end 11 are electrically connected to the input end 11 and the corresponding coupling end 13, respectively. The two ends of the coupling element 22 near the output end 12 are electrically connected to the output end 12 and the corresponding coupling end 13, respectively, and are arranged symmetrically.

[0045] It should be noted that the function of the coupler 22 is to realize the energy transfer of the signal from the main transmission path to the coupling end 13. When the signal enters the transmission line 21 from the input end 11, a part of the signal energy on the main transmission path is coupled to the coupling end 13 connected to it in the cavity 110 near the input end 11. Similarly, the coupler 22 near the output end 12 will also perform the same coupling operation on the signal transmitted from the input end 11 and about to reach the output end 12, coupling another part of the signal energy to the corresponding coupling end 13. By distributing the two couplers 22 in the cavities 110 on both sides and symmetrically arranging them, the electromagnetic environment of the two couplers 22 can be similar, thereby ensuring that the signal coupling characteristics are consistent.

[0046] Each coupling element 22 in this embodiment includes a first resistor 201, a second resistor 202, a third resistor 203, a fourth resistor 204, and a fifth resistor 205. The input terminal 11 is electrically connected to the first resistor 201 and the output terminal 12 of the coupling elements 22 on both sides. The other end of the first resistor 201 on both sides is electrically connected to the corresponding second resistor 202. The other end of the second resistor 202 is electrically connected to the corresponding third resistor 203. The other end of the third resistor 203 is electrically connected to the corresponding coupling terminal 13 and the fourth resistor 204. The other ends of the fourth resistors 204 on both sides are connected in common and electrically connected to the corresponding fifth resistor 205. The other end of the fifth resistor 205 is grounded.

[0047] It should be noted that after the signal from input terminal 11 enters the coupling element 22, it first passes through the first resistor 201, which acts as a preliminary current limiter and voltage divider, distributing the voltage of the input signal in a certain proportion. After passing through the first resistor 201, the signal reaches the second resistor 202, which, together with the first resistor 201, forms a voltage divider circuit to further adjust the voltage amplitude of the signal. According to the coupling requirements, an appropriate proportion of energy is extracted from the main transmission signal for coupling output. The third resistor 203 plays a role in adjusting the characteristics of the coupled signal in the circuit; it works in conjunction with the preceding resistors. The third resistor 203 affects the amplitude and phase of the signal coupled to the coupling terminal 13. At the same time, the third resistor 203 participates in the impedance matching of the entire coupling circuit, ensuring that the signal can be efficiently coupled from the main transmission path to the coupling terminal 13. The fourth resistor 204 and the fifth resistor 205 form a grounding loop. The fourth resistor 204 correlates and balances the coupling circuits on both sides to a certain extent, while the grounding of the fifth resistor 205 provides a stable reference potential for the entire coupling circuit. The grounding loop can eliminate common-mode interference in the circuit, stabilize the level of the coupled signal, and also help adjust the DC component of the coupled signal.

[0048] In this embodiment, by reasonably selecting the resistance values ​​of the first resistor 201, the second resistor 202, and the third resistor 203, the signal amplitude coupled from the input terminal 11 to the coupling terminal 13 can be precisely controlled; the grounding loop composed of the fourth resistor 204 and the fifth resistor 205 can effectively eliminate common-mode noise and interference in the circuit, making the coupled signal purer and more stable.

[0049] Specifically, in this embodiment, the heat dissipation component 3 is a cooling fan.

[0050] Working principle:

[0051] The broadband high-power signal to be processed is connected to the coupler from the input terminal 11. The signal enters the transmission line 21 and the coupling members 22 on both sides of the coupler. When the signal is transmitted on the transmission line 21, it passes through several isolation ferrite magnetic rings 4 set in the intermediate cavity 110. The ferrite magnetic rings 4 use their high frequency and high impedance characteristics to initially filter out high frequency noise and interference in the signal. After passing through the first to fifth resistors, current limiting, voltage division, amplitude adjustment, characteristic adjustment and impedance matching are performed in sequence. Part of the signal is coupled to the corresponding coupling terminal 13, and the remaining main signal continues to be transmitted to the output terminal 12 on the transmission line 21.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A broadband high-power broadband coupler, characterized in that, include: The housing (1) is hollow inside, and the housing (1) is provided with an input terminal (11), an output terminal (12) and a coupling terminal (13). The transmission coupling component (2) is disposed inside the housing (1), and the connection end of the transmission coupling component (2) is electrically connected to the input end (11), the output end (12) and the coupling end (13) respectively, for signal transmission and coupling; The heat dissipation component (3) is disposed on the housing (1) and the heat dissipation end is connected to the inside of the housing (1). The housing (1) has a heat dissipation hole (100) disposed opposite to the heat dissipation component (3). The transmission coupling component (2) is located between the heat dissipation hole (100) and the heat dissipation component (3). The heat dissipation component (3) carries the heat generated by the heating resistor device in the transmission coupling component (2) out of the housing (1).

2. The broadband high-power broadband coupler as described in claim 1, characterized in that: The number of heat dissipation components (3) is several, and the several heat dissipation components (3) are arranged evenly at equal intervals along the length direction of the shell (1). The number of heat dissipation holes (100) is multiple, and the multiple heat dissipation holes (100) are arranged in an array rectangle and are set in correspondence with the positions of the heat dissipation components (3).

3. The broadband high-power broadband coupler as described in claim 1, characterized in that: The transmission coupling component (2) includes a transmission line (21) and a coupling element (22), wherein, The two ends of the transmission line (21) are electrically connected to the input end (11) and the output end (12) respectively, and are used to transmit the input signal to the housing (1); The two ends of the coupling element (22) are electrically connected to the transmission line (21) and the coupling end (13) respectively, and are used to couple the input signal.

4. The broadband high-power broadband coupler as described in claim 3, characterized in that: The housing (1) is provided with at least two sampling resistor partitions (14) for dividing the housing (1) into at least three non-communicating cavities (110). The sampling resistor partitions (14) are provided with perforations (120). The two ends of the transmission line (21) pass through the corresponding perforations (120) and are electrically connected to the input end (11) and the output end (12) respectively.

5. The broadband high-power broadband coupler as described in claim 4, characterized in that: The input terminal (11), output terminal (12), perforation (120), and transmission line (21) are all on the same axis.

6. The broadband high-power broadband coupler as described in claim 4, characterized in that: The outer side of the transmission line (21) abuts against the inner wall of the perforation (120) and is in a taut state.

7. The broadband high-power broadband coupler as described in claim 5, characterized in that: It also includes several isolation ferrite magnetic rings (4), which are all set in the middle cavity (110) and sleeved on the outside of the transmission line (21) to filter the signal.

8. The broadband high-power broadband coupler as described in claim 3, characterized in that: There are two coupling elements (22), which are respectively located in the cavities (110) on both sides. There are two coupling ends (13), and the two ends of the coupling element (22) near the input end (11) are electrically connected to the input end (11) and the corresponding coupling end (13) respectively. The two ends of the coupling element (22) near the output end (12) are electrically connected to the output end (12) and the corresponding coupling end (13) respectively, and are arranged symmetrically.

9. The broadband high-power broadband coupler as described in claim 8, characterized in that: Each coupling element (22) includes a first resistor (201), a second resistor (202), a third resistor (203), a fourth resistor (204), and a fifth resistor (205). The input terminal (11) is electrically connected to the first resistor (201) and the output terminal (12) of the coupling elements (22) on both sides, respectively. The other end of the first resistor (201) on both sides is electrically connected to the corresponding second resistor (202), the other end of the second resistor (202) is electrically connected to the corresponding third resistor (203), the other end of the third resistor (203) is electrically connected to the corresponding coupling terminal (13) and the fourth resistor (204), the other end of the fourth resistor (204) on both sides is connected in common and electrically connected to the corresponding fifth resistor (205), and the other end of the fifth resistor (205) is grounded.

10. The broadband high-power broadband coupler as described in claim 1, characterized in that: The heat dissipation component (3) is a cooling fan.

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