5G intermodulation duplexer

Abstract

The utility model discloses a 5G intermodulation duplexer which comprises a cavity, a fly rod assembly is fixedly installed on the inner wall of the bottom of the cavity, a debugging cover plate is fixed on the top of the cavity in a threaded mode, a plurality of debugging screw rods are prefabricated on the top of the debugging cover plate, a connecting base is integrally arranged on the left side of the cavity, and three connecting bases are integrally arranged on the right side of the cavity. According to the utility model, through a design method of one-path emission signal and two-path reception signal frequency bands, detection of intermodulation signals, which are generated by emission signals and fall at a low end and a high end of an emission frequency band, can be realized at the same time, thereby reducing the misjudgment risk of the test, improving the product quality, and reducing the production cost. And the lengths of the debugging screw rod and the cross coupling screw rod can be directly rotated to change the frequency and the coupling bandwidth, so that debugging is completed, cover dismounting for debugging replacement is not needed, the use cost is reduced, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of 5G intermodulation duplexers, and in particular to a 5G intermodulation duplexer. Background Art

[0002] In the field of communications, duplexers are often used in telephone exchanges, radio communications, satellite communications, optical fiber communications, and other fields. For example, in telephone exchanges, duplexers are used to ensure smooth telephone communication, allowing both parties to speak and listen at the same time. In radio communications, duplexers can send and receive signals at the same time, which is used to solve communication problems and improve communication efficiency. In satellite communications, duplexers can realize communication between satellites and ground stations, and can transmit and forward signals between various parts of the earth. In optical fiber communications, duplexers are used to realize two-way optical fiber signal transmission.

[0003] The main function of the duplexer is to allow two different signal sources to share the same transmission medium, so that the transmitting signal and the receiving signal can work simultaneously through the difference in frequency. However, 5G products are mostly broadband multi-channel filters, which cannot extract their intermodulation signals. To ensure the quality of their filters, it is necessary to test the interference signals generated by themselves. In the test system, the 5G intermodulation duplexer is an indispensable test device. Its function is to accurately extract the intermodulation signals generated by the RF unit of the 5G product for detection, so as to determine whether the interference signal of the RF unit of the 5G product affects the normal signal transmission.

[0004] The 5G intermodulation duplexer in the prior art has the following deficiencies during use: 1. The existing 5G intermodulation duplexer is mostly a two-band duplexer, one transmitting channel and one receiving channel, which can only detect the intermodulation signal at the low end of the receiving and transmitting signal, and does not detect the signal whose intermodulation signal is higher than the transmitting frequency band. The third-order intermodulation signal detected is not comprehensive, which is mainly reflected in: only the frequency band where 2F1-F2 falls is measured, but the frequency band where 2F2-F1 falls is not detected (such as Figure 2 As shown), there is a risk of misjudgment; 2. The tap structure of the 5G intermodulation duplexer is mostly inductive coupling. If it is to be adjusted, it is necessary to open the debugging cover or even replace the coupling plate, which is time-consuming and increases the cost; Based on the above situation, we propose a 5G intermodulation duplexer. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a 5G intermodulation duplexer.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A 5G intermodulation duplexer comprises a cavity, a flying rod assembly is fixedly mounted on the bottom inner wall of the cavity, a debugging cover is threadedly fixed on the top of the cavity, a plurality of debugging screws are prefabricated on the top of the debugging cover, a connecting seat is integrally provided on the left side of the cavity, three connecting seats are integrally provided on the right side of the cavity, an output port coupling rod is embedded on the side of the connecting seat on the left side away from the cavity, a low-end receiving coupling rod, a transmitting port coupling rod and a high-end receiving coupling rod are sequentially embedded on the right sides of the three connecting seats on the right side from front to back, an input port connector is screwed on the low-end receiving coupling rod, the transmitting port coupling rod and the high-end receiving coupling rod, the input port connector is threadedly fixed on the right side of the corresponding connecting seat, an output port connector is screwed on the output port coupling rod, and the output port connector is threadedly fixed on the left side of the connecting seat on the left side.

[0008] Preferably, a plurality of first thread grooves are formed on the top of the cavity, a plurality of first bolt holes are formed on the top of the debugging cover plate, and the same cover plate fastening screw is threadedly sleeved in the first thread grooves and the corresponding first bolt holes.

[0009] Preferably, a plurality of positioning sleeves are fixedly connected to the inner wall of the bottom of the cavity, a plurality of positioning rods are fixedly connected to the bottom of the debugging cover plate, and the positioning rods are movably sleeved in corresponding positioning sleeves.

[0010] Preferably, the input port connector is integrally provided with a first outer edge on the left side of the outer side, four second bolt holes are opened on the right side of the first outer edge, and four second thread grooves are opened on the right side of the right connecting seat, and the second bolt holes and the corresponding second thread grooves are threaded with the same first connector fastening screw.

[0011] Preferably, a second outer edge is integrally provided on the right outer side of the output port connector, four third bolt holes are opened on the right side of the second outer edge, four third thread grooves are opened on the left side of the left connecting seat, and the third thread grooves and the corresponding third bolt holes are threadedly sleeved with the same second connector fastening screw.

[0012] Preferably, the flying rod assembly is arranged to increase the suppression of the transmitting channel on the receiving channel.

[0013] Preferably, the types of the multiple debugging screws are frequency debugging screws, coupling debugging screws and cross-coupling screws, and the numbers of frequency debugging screws, coupling debugging screws and cross-coupling screws are determined according to installation requirements.

[0014] Compared with the existing technology, the beneficial effects of the utility model are:

[0015] 1. Through the design method of one transmission signal and two reception signal frequency bands, the intermodulation signals generated by the transmission signal can be detected at the low and high ends of the transmission frequency band at the same time, which solves the problem that the traditional duplexer can only detect the intermodulation signals at the low end of the transmission signal. The detection of actual 5G products is more stringent, thereby reducing the risk of misjudgment in the test and improving the quality of the product.

[0016] 2. Through the multiple debugging screws, the length of the debugging screws and the cross-coupling screws can be directly rotated to change their frequency and coupling bandwidth to achieve the spectrum response of a specific frequency band. There is no need to remove the cover for replacement and debugging, which reduces the cost of use and saves time and effort;

[0017] The utility model can simultaneously detect the intermodulation signals generated by the transmitting signal and falling on the low end and the high end of the transmitting frequency band through the design method of one transmitting signal and two receiving signal frequency bands, thereby reducing the risk of misjudgment in the test and improving the quality of the product. In addition, the length of the debugging screw and the cross-coupling screw can be directly rotated to change their frequency and coupling bandwidth to complete the debugging, without the need to remove the cover for replacement and debugging, thereby reducing the use cost and saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of an exploded three-dimensional structure of a 5G intermodulation duplexer proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of a third-order intermodulation signal detected by a 5G intermodulation duplexer proposed in the prior art.

[0020] In the figure: 1. cavity; 2. flying rod assembly; 3. low-end receiving coupling rod; 4. transmitting port coupling rod; 5. input port connector; 6. high-end receiving coupling rod; 7. debugging cover; 8. cover fastening screw; 9. debugging screw; 10. output port coupling rod; 11. second connector fastening screw; 12. output port connector; 13. first threaded groove; 14. connecting seat; 15. positioning sleeve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1A 5G intermodulation duplexer comprises a cavity 1, a flying rod assembly 2 is fixedly mounted on the bottom inner wall of the cavity 1, wherein the setting of the flying rod assembly 2 is used to increase the suppression of the transmitting channel on the receiving channel, a debugging cover plate 7 is threadedly fixed on the top of the cavity 1, wherein a plurality of first thread grooves 13 are provided on the top of the cavity 1, a plurality of first bolt holes are provided on the top of the debugging cover plate 7, the first thread grooves 13 and the corresponding first bolt holes are threadedly sleeved with the same cover plate fastening screw 8, and the fixed connection between the debugging cover plate 7 and the cavity 1 is achieved by the plurality of cover plate fastening screws 8, a plurality of positioning sleeves 15 are fixedly connected to the bottom inner wall of the cavity 1, a plurality of positioning rods are fixedly connected to the bottom of the debugging cover plate 7, the positioning rods are movably sleeved in the corresponding positioning sleeves 15, and the positioning sleeves 15 cooperate with the positioning rods to achieve the effect of positioning the debugging cover plate 7;

[0023] A plurality of debugging screws 9 are prefabricated on the top of the debugging cover 7, wherein the plurality of debugging screws 9 are respectively classified into frequency debugging screws, coupling debugging screws and cross-coupling screws, and the number of frequency debugging screws, coupling debugging screws and cross-coupling screws is determined according to the installation requirements. A connecting seat 14 is integrally provided on the left side of the cavity 1, and three connecting seats 14 are integrally provided on the right side of the cavity 1. An output port coupling rod 10 is embedded on the side of the connecting seat 14 on the left side away from the cavity 1, and a low-end receiving coupling rod 3, The transmitting port coupling rod 4 and the high-end receiving coupling rod 6, the low-end receiving coupling rod 3, the transmitting port coupling rod 4 and the high-end receiving coupling rod 6 are all screwed with an input port connector 5, and the input port connector 5 is threadedly fixed on the right side of the corresponding connecting seat 14, wherein the outer left side of the input port connector 5 is integrally provided with a first outer edge, the right side of the first outer edge is provided with four second bolt holes, and the right side of the connecting seat 14 on the right side is provided with four second thread grooves, and the second bolt holes and the corresponding second thread grooves are threadedly sleeved with the same first connector fastening screw, through A plurality of first connector fastening screws are used to fix the right side connection seat 14 and the corresponding input port connector 5. The output port coupling rod 10 is provided with an output port connector 12, which is threadedly fixed to the left side of the left side connection seat 14. A second outer edge is integrally provided on the right side of the outer side of the output port connector 12, four third bolt holes are provided on the right side of the second outer edge, and four third thread grooves are provided on the left side of the left side connection seat 14. The third thread groove and the corresponding third bolt hole are threadedly sleeved with the same second connector fastening screw 11, and the left side connection seat 14 and the output port connector 12 are fixed by the four second connector fastening screws 11. The utility model can simultaneously detect the intermodulation signals generated by the transmission signal and the intermodulation signals falling on the low end and the high end of the transmission frequency band through the design method of one transmission signal and two reception signal frequency bands, thereby reducing the risk of misjudgment of the test and improving the quality of the product. In addition, the length of the debugging screw and the cross-coupling screw can be directly rotated to change their frequency and coupling bandwidth to complete the debugging, without the need to remove the cover for replacement and debugging, thereby reducing the use cost and saving time and effort.

[0024] Working principle: When in use, the three input port connectors 5 are respectively screwed on the transmitting port coupling rod 4, the low-end receiving coupling rod 3 and the high-end receiving coupling rod 6, and the output port connector 12 is screwed on the output port coupling rod 10, and then the input port connector 5 and the output port connector 12 are respectively fixed on the corresponding connection seat 14 through a plurality of first connector fastening screws and second connector fastening screws 11, so as to realize the locking of the input port connector 5 and the output port connector 12 with the cavity 1. After installation, the input and output coupling of the signal can be realized;

[0025] Then, the flying rod assembly 2 is installed in the cavity 1, which can be used to increase the suppression of the transmitting channel on the receiving channel. Then, the debugging cover 7 prefabricated with the debugging screw 9 is fixed to the top of the cavity 1 through multiple cover fastening screws 8. When fastening the cover fastening screws 8, it is necessary to tighten from the middle to the surroundings, because the debugging cover 7 is not an absolute plane and has a certain flatness difference. By fastening from the middle to the surroundings, the debugging cover 7 and the cavity 1 can be ensured to be in close contact, thereby forming a complete and well-closed electromagnetic field space, and completing the assembly of the 5G intermodulation duplexer;

[0026] After the assembly is completed, the specific cable adapter is connected to the corresponding debugging screw 9. According to the requirements of the test system, the frequency band of the transmission channel and the frequency band of the two receiving channels that need to be debugged are selected, and the corresponding frequency debugging screw is adjusted to the center frequency of the corresponding frequency band. Then, the debugging coupling debugging screw and the cross-coupling screw are coordinated to achieve the corresponding coupling bandwidth and suppression requirements, and finally, the joint adjustment is performed. By adjusting the length of the debugging screw and the cross-coupling screw on the debugging cover 7, the frequency and coupling bandwidth can be changed to achieve the spectrum response of a specific frequency band. This debugging method does not require the cover to be removed for replacement and debugging, which saves time and effort and reduces costs.

[0027] The manufactured product can be directly used in the intermodulation test. When testing the product, the input port connector 5 connected to the transmitting port coupling rod 4 can be connected to the device under test, the input port connector 5 connected to the high-end receiving coupling rod 6 and the low-end receiving coupling rod 3 can be connected to the spectrum analyzer, and the output port connector 12 is connected to a low intermodulation high-power load. In this way, the intermodulation signal generated by the product under test is extracted through the intermodulation duplexer to realize the testing of the product under test. Through the design method of one transmitting signal and two receiving signal frequency bands, the intermodulation signal generated by the transmitting signal and the intermodulation signal falling at the low and high ends of the transmitting frequency band can be detected at the same time, which solves the problem that the traditional duplexer can only detect the intermodulation signal at the low end of the transmitting signal. The detection of actual 5G products is more stringent, thereby reducing the risk of misjudgment in the test and improving the quality of the product.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 5G intermodulation duplexer, comprising a cavity (1), characterized in that: A flying rod assembly (2) is fixedly mounted on the inner wall at the bottom of the cavity (1); a debugging cover plate (7) is threadedly fixed on the top of the cavity (1); a plurality of debugging screws (9) are prefabricated on the top of the debugging cover plate (7); a connecting seat (14) is integrally arranged on the left side of the cavity (1); three connecting seats (14) are integrally arranged on the right side of the cavity (1); an output port coupling rod (10) is embedded on the side of the left connecting seat (14) away from the cavity (1); and the right sides of the three connecting seats (14) are sequentially embedded with the output port coupling rod (10) from front to back. A low-end receiving coupling rod (3), a transmitting port coupling rod (4) and a high-end receiving coupling rod (6) are provided, and an input port connector (5) is screwed on the low-end receiving coupling rod (3), the transmitting port coupling rod (4) and the high-end receiving coupling rod (6), and the input port connector (5) is screwed on the right side of the corresponding connecting seat (14), and an output port connector (12) is screwed on the output port coupling rod (10), and the output port connector (12) is screwed on the left side of the connecting seat (14) on the left side.

2. A 5G intermodulation duplexer according to claim 1, characterized in that: The top of the cavity (1) is provided with a plurality of first thread grooves (13), the top of the debugging cover plate (7) is provided with a plurality of first bolt holes, and the first thread grooves (13) and the corresponding first bolt holes are threadedly sleeved with the same cover plate fastening screw (8).

3. A 5G intermodulation duplexer according to claim 1, characterized in that: A plurality of positioning sleeves (15) are fixedly connected to the inner wall of the bottom of the cavity (1), and a plurality of positioning rods are fixedly connected to the bottom of the debugging cover plate (7), and the positioning rods are movably sleeved in corresponding positioning sleeves (15).

4. A 5G intermodulation duplexer according to claim 1, characterized in that: The input port connector (5) is integrally provided with a first outer edge on the left side of the outer side, four second bolt holes are provided on the right side of the first outer edge, and four second thread grooves are provided on the right side of the right connecting seat (14), and the second bolt holes and the corresponding second thread grooves are threadedly sleeved with the same first connector fastening screw.

5. A 5G intermodulation duplexer according to claim 1, characterized in that: The output port connector (12) is integrally provided with a second outer edge on the right side of the outer side, and four third bolt holes are provided on the right side of the second outer edge. The left side of the connecting seat (14) on the left side is provided with four third thread grooves, and the third thread grooves and the corresponding third bolt holes are threadedly sleeved with the same second connector fastening screw (11).

6. A 5G intermodulation duplexer according to claim 1, characterized in that: The arrangement of the flying rod assembly (2) is used to increase the suppression of the transmitting channel on the receiving channel.

7. A 5G intermodulation duplexer according to claim 1, characterized in that: The types of the plurality of adjustment screws (9) are frequency adjustment screws, coupling adjustment screws and cross-coupling screws, respectively, and the number of the frequency adjustment screws, coupling adjustment screws and cross-coupling screws is determined according to installation requirements.

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