High-power high-intermodulation miniaturized surface-mounted isolator applied to 5G base station

Abstract

The utility model discloses a high-power high-intermodulation miniaturized surface-mounted isolator applied to a 5G base station, which relates to the technical field of radio frequency isolators and comprises a magnetic conductive cavity and a magnetic conductive cover plate. The magnetic conductive cavity takes the center of a cylinder as an original point for scattering and is provided with a magnetic conductive accommodating cavity, and a first port, a second port and a third port are arranged along the circumference of the magnetic conductive cavity at equal intervals; wherein the third port is outwards provided with a bearing and heat conducting platform used for welding a high-power attenuator, and meanwhile, a third end attenuation signal angle is led out; a welding positioning arc is arranged at the bottom of the magnetic conductive cavity along the circumference of the welding surface; the first port, the second port and the third port are led out and are provided with a rigid support system which is used for undertaking radio frequency signal transmission and rigid support; a signal transmission channel is arranged on the rigid support and heat conduction platform system; the dielectric ring and the signal angle are inserted through the port, and the signal angle is directly connected to the central conductor and serves as a lead to conduct signals.

Description

Technical Field

[0001] The utility model relates to the technical field of isolators, and in particular to a high-power, high-intermodulation, miniaturized surface-mount isolator for a 5G communication base station. Background Art

[0002] With the improvement of communication systems and the rapid development of mobile applications for individuals and industries, the RF communication-related industrial ecosystem will gradually change. The RF modules used in 5G base stations will not only have air interface technologies with higher speeds, larger bandwidths, and stronger capabilities, but also technologies for intelligent networks for user experience and business applications.

[0003] To sum up, in order to achieve the characteristics of high speed, wide bandwidth, miniaturization, high intermodulation, high reliability and other characteristics of 5G base station equipment, it is necessary to provide a high-power, high-intermodulation, miniaturized surface-mount isolator for 5G base stations among the components used in the unit package. Utility Model Content

[0004] The purpose of the utility model is to provide a high-power, high-intermodulation, miniaturized surface-mount isolator for 5G base stations, in order to address the technical problems that the surface-mount isolators used in the prior art for 5G radio frequency communication debugging systems have high loss, poor intermodulation, low power, etc., and cannot meet the debugging requirements of radio frequency communication equipment.

[0005] The utility model is realized by the following technical solutions:

[0006] A high-power, high-intermodulation, miniaturized surface-mount isolator used in 5G base stations comprises a magnetic cavity; the materials in the magnetic cavity are stacked in sequence from bottom to top, including a first permanent magnet, a first outer conductor, a first composite ferrite, a center conductor, a second composite ferrite, a second outer conductor, a second permanent magnet, a phase adjuster, a temperature compensator, and a magnetic cover; a closed locking system is arranged on the top of the magnetic cavity, and a magnetic cover is used on the top to tighten and install the closed system.

[0007] As a further preferred solution of the utility model applied to the high-power high intermodulation miniaturized surface mount isolator of the 5G base station, the magnetic conductive cavity is scattered with the center of the cylinder as the origin, a magnetic conductive receiving cavity is provided, and a first port, a second port and a third port are provided at equal intervals along the circumference of the magnetic conductive cavity;

[0008] The third port is provided with a bearing and heat-conducting platform for welding a high-power attenuator, and the attenuation signal angle of the third port is led outward;

[0009] The angle between the first port and the second port may be 120°, 140°, or 180°;

[0010] A welding positioning arc is arranged at the bottom of the magnetic conductive cavity along the circumference of the welding surface;

[0011] The second port leads out and sets a support and transmission system for assuming radio frequency signal transmission and rigid support; a signal transmission channel is set on the support and transmission system;

[0012] The second port and the third port are provided with curved shielding rings;

[0013] The first port is inserted with a first input-end dielectric ring and a first input signal horn, and the second port is inserted with a second input-end dielectric ring and a second input signal horn, which are directly connected to the central conductor and serve as leads to conduct signals.

[0014] As a further preferred solution of the utility model applied to the high-power, high-intermodulation, miniaturized surface-mount isolator for 5G base stations, the central conductor body is composed of a Y-junction integrated system, and an F-type matching capacitor is arranged at one end of the RF signal input angle; a signal transmission inductor is arranged at one end of the output angle, and the transmission inductor at one end of the input angle is arranged with the Y-axis as the center line mirror, and an absorption end inductor is arranged in the negative direction of the Y-axis to form a 30-degree angle with the Y-junction integrated system; the design of the integrated circuit system is matched with the inductor and capacitor.

[0015] As a further preferred solution of the utility model applied to the high-power, high-intermodulation, miniaturized surface-mount isolator for 5G base stations, the absorption end inductor is provided with an inverted L-shaped integrated capacitor, and is connected to the absorption end inductor, and a corresponding matching capacitor is provided at the tip of the L-shaped integrated capacitor, with a lead-out width of 0.3mm.

[0016] As a further preferred solution of the utility model applied to the high-power, high-intermodulation, miniaturized surface-mount isolator of 5G base stations, the first composite ferrite and the second composite ferrite are made of a composite material with a high dielectric constant and sintered together with ferrite; the composite material is a ring structure with a maximum outer diameter of 22.0 mm, providing support for the gyromagnetic ferrite material, and the ring structure is grayish white. The ferrite material in the composite material is surface polished and coated with a film layer with a thickness of 5 microns.

[0017] As a further preferred solution for the utility model applied to the high-power, high-intermodulation, miniaturized surface-mount isolator of 5G base stations, the attenuation signal corner adopts a graded design, which is composed of three parts: a radio frequency signal connection, a sleeve rod and an end face. The end face is in a circular ring shape and coated with a metal film layer, and the end face can transmit radio frequency signals; the sleeve rod is inserted through the attenuation end dielectric ring; the connection is connected to the third port of the center conductor; the attenuation signal corner supports the transmission of radio frequency signals and is connected to the rigid structure support.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. It is applied to the high-power high intermodulation miniaturized surface mount isolator of 5G base stations. By improving the magnetic conductive cavity, the center of the cylinder is used as the origin for scattering, a magnetic conductive receiving cavity is set, and the first port, the second port and the third port are arranged at equal intervals along the circumference of the magnetic conductive cavity; Among them, the third port is provided with a bearing and heat conduction platform for welding the high-power attenuator outward, and the attenuation signal angle of the third end is led out at the same time; the angle between the first port and the second port can be 120°, 140°, 180°;

[0020] A welding positioning arc is arranged along the circumference of the welding surface at the bottom of the magnetic cavity; the first port, the second port and the third port are led out and a rigid support system is arranged to undertake radio frequency signal transmission and rigid support; a signal transmission channel is arranged on the rigid support and the thermal conductive platform system; a dielectric ring and a signal horn are inserted through the ports, and the signal horn is directly connected to the central conductor to conduct the signal as a lead wire;

[0021] 2. The utility model is a high-power high-intermodulation miniaturized surface-mount isolator used in 5G base stations. The material stacking sequence in the magnetic conductive cavity is improved, and the components are stacked from bottom to top, including a first permanent magnet, a first outer conductor, a first composite ferrite, a center conductor, a second composite ferrite, a second outer conductor, a second permanent magnet, a phase adjuster, a temperature compensator, and a magnetic conductive cover plate; a closed locking system is arranged on the top of the magnetic conductive cavity to facilitate the spiral installation of the device, and the magnetic conductive cover plate is used on the top for screwing and installation.

[0022] 3. The utility model is a high-power high intermodulation miniaturized surface mount isolator used in 5G base stations. The central conductor body is improved to be composed of a large Y-junction integrated system, and an "F-type matching capacitor" is set at one end of the RF signal input angle; a signal transmission inductor is set at one end of the output angle, and the Y-axis is used as the center line mirror, and the transmission inductor at one end of the input angle is set, and the absorption end inductor is set in the negative direction of the Y-axis to form a 30-degree angle with the Y-junction integrated system; the design of the integrated circuit system and the matching of the inductor and the capacitor make the surface mount isolator tend to be miniaturized;

[0023] 4. The utility model is a high-power high intermodulation miniaturized surface mount isolator used in 5G base stations. By improving the absorption end inductor, an inverted L-shaped integrated capacitor is set, and connected to the absorption end inductor, a corresponding matching capacitor is set at the tip of the L-shaped integrated capacitor, and the lead width is 0.3mm; the reasonable design of the absorption end inductor of the surface mount isolator helps to improve the reliability of the surface mount isolator and enhance the power resistance of the device;

[0024] 5. The utility model is a high-power high intermodulation miniaturized surface mount isolator used in 5G base stations. The first composite ferrite and the second composite ferrite are improved by sintering a composite material with a high dielectric constant and ferrite together; the composite material is a ring structure with a maximum outer diameter of 22.0 mm, providing support for the gyromagnetic ferrite material, and the ring structure is grayish white. The ferrite material in the composite material is polished on the surface and coated with a film layer with a thickness of 5 microns, thereby improving the power resistance and intermodulation parameters of the product;

[0025] 6. The utility model is a high-power, high-intermodulation, miniaturized surface-mount isolator used in 5G base stations. The attenuation signal angle is improved by adopting a graded design, and is composed of three parts: a radio frequency signal connection, a sleeve rod and an end face. The end face is in a circular ring shape and coated with a metal film layer, and the end face can transmit radio frequency signals; the sleeve rod is interspersed with a dielectric ring; the connection is connected to the third port of the center conductor; the attenuation signal angle supports the transmission of radio frequency signals and is connected to a rigid structure support. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the magnetic cavity of the utility model used in a high-power, high-intermodulation, miniaturized surface-mount isolator for a 5G base station;

[0027] Figure 2 This is a schematic diagram of the central conductor of the utility model used in a high-power, high-intermodulation, miniaturized surface-mount isolator for a 5G base station;

[0028] Figure 3 This is a schematic diagram of a three-dimensional model of a high-power, high-intermodulation, miniaturized surface-mount isolator used in a 5G base station;

[0029] Figure 4 This is a schematic diagram of the decomposed structure of the utility model used in a high-power, high-intermodulation, miniaturized surface-mount isolator for a 5G base station.

[0030] In the figure: 1. magnetic cavity; 1-1. bearing and heat conduction platform; 1-2. curved shielding ring; 1-3. support and transmission system; 1-4. magnetic receiving cavity; 1-5. closed locking system; 2. first permanent magnet; 3. first outer conductor; 4. first composite ferrite; 5. center conductor; 5-1. absorption end inductor; 5-2. matching capacitor; 5-3. Y junction integrated system; 5-4. signal transmission inductor; 5-5. F-type matching capacitor; 4-1. second composite ferrite; 3-1. second outer conductor; 6. second permanent magnet; 7. phase adjuster; 8. temperature compensator; 9. magnetic cover; 10. input end dielectric ring; 10-1. input end dielectric ring; 11. input signal angle; 11-1. output signal angle; 12. high power attenuator; 13. attenuation end dielectric ring; 14. attenuation signal angle; DETAILED DESCRIPTION

[0031] 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.

[0032] The miniaturized stripline isolator of the utility model embodiments generally described and shown in the drawings herein can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed, but merely represents selected embodiments of the utility model.

[0033] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0034] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "X-axis", "Y-axis", "Z-axis", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The following is a further description in conjunction with the accompanying drawings and specific implementations.

[0037] like Figure 1-Figure 4 As shown, a high-power, high-intermodulation, miniaturized surface-mount isolator used in 5G base stations comprises a magnetic cavity 1; the materials in the magnetic cavity 1 are stacked in sequence from bottom to top, including a first permanent magnet 2, a first outer conductor 3, a first composite ferrite 4, a center conductor 5, a second composite ferrite 4-1, a second outer conductor 3-1, a second permanent magnet 6, a phase adjuster 7, a temperature compensator 8, and a magnetic cover 9; a closed locking system 1-5 is arranged on the top of the magnetic cavity 1 to facilitate the spiral installation of the device, and a magnetic cover 9 is used on the top to tighten and install the magnetic cavity 1 to prevent magnetic leakage.

[0038] In order to achieve the design requirements of high intermodulation, low loss and miniaturization of the 5G base station project, the miniaturized surface mount isolator is used in the radio frequency communication equipment, that is, the center of the cylinder of the magnetic cavity is used as the origin for scattering, and three ports are arranged at equal intervals along the circumference of the magnetic cavity. The magnetic cavity 1 is scattered with the center of the cylinder as the origin, and magnetic receiving cavities 1-4 are arranged, and the first port, the second port and the third port are arranged at equal intervals along the circumference of the magnetic cavity;

[0039] The third port is provided with a bearing and heat-conducting platform 1-1 for welding a high-power attenuator 12 outwardly, and at the same time leads out an attenuation signal angle 14 of the third port;

[0040] The angle between the first port and the second port may be 120°, 140°, or 180°;

[0041] A welding positioning arc is arranged at the bottom of the magnetic conductive cavity along the circumference of the welding surface;

[0042] The second port leads out and sets a support and transmission system 1-3, which is used for radio frequency signal transmission and rigid support; a signal transmission channel is set on the support and transmission system 1-3;

[0043] The second port and the third port are provided with a curved shielding ring 1-2;

[0044] The first port is inserted with a first input-end dielectric ring 10 and a first input signal horn 11, and the second port is inserted with a second input-end dielectric ring 10-1 and a second input signal horn 11-1. The signal horn is directly connected to the central conductor as a lead to conduct signals.

[0045] A raised platform is provided outwardly from one of the ports, and the raised platform is used for welding a high-power attenuator, wherein the angle between the first port and the second port can be 120 degrees, 140 degrees, or 180 degrees; a positioning arc is provided along the circumference of the welding surface at the bottom of the magnetic conductive cavity, which is helpful to prevent solder from climbing when reflow soldering is used;

[0046] The main body of the improved central conductor 5 is composed of a Y-junction integrated system 5-3, and an F-type matching capacitor 5-5 is set at one end of the RF signal input angle; a signal transmission inductor 5-4 is set at one end of the output angle, and the transmission inductor at one end of the input angle is set with the Y-axis as the center line mirror, and an absorption end inductor 5-1 is set in the negative direction of the Y-axis to form an angle of 30 degrees with the Y-junction integrated system; the design of the integrated circuit system and the matching of the inductor and the capacitor make the surface mount isolator tend to be miniaturized.

[0047] The absorption end inductor 5-1 is provided with an inverted L-shaped integrated capacitor, and is connected to the absorption end inductor. The tip of the L-shaped integrated capacitor is provided with a corresponding matching capacitor 5-2, and the lead width is 0.3 mm.

[0048] The utility model is a high-power, high-intermodulation, miniaturized surface-mount isolator used in 5G base stations. The first composite ferrite 4 and the second composite ferrite 4-1 are improved by sintering a composite material with a high dielectric constant and ferrite together; the composite material is a ring structure with a maximum outer diameter of 22.0 mm, providing support for the rotating magnetic ferrite material, and the ring structure is grayish white. The ferrite material in the composite material is surface polished and coated with a film layer with a thickness of 5 microns, thereby improving the power resistance and intermodulation parameters of the product.

[0049] The utility model is a high-power high-intermodulation miniaturized surface-mount isolator used in 5G base stations. The attenuation signal corner 14 is improved by adopting a graded design, and is composed of a radio frequency signal connection part, a sleeve rod and an end face. The end face is in a circular ring shape and coated with a metal film layer. The end face can transmit radio frequency signals; the sleeve rod is inserted through the attenuation end dielectric ring 13; the connection part is connected to the third port of the center conductor 5; the attenuation signal corner 14 supports the transmission of radio frequency signals and is connected to the rigid structure support at the same time.

[0050] After the surface mount isolator body is connected to the external wire, the device components can be filtered and stray beams can be absorbed. The smaller size can increase the integration of the components and achieve the requirements of product miniaturization, high intermodulation and low loss.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. Applied to 5G base station high-power high intermodulation miniaturized surface mount isolator, characterized by: The invention comprises a magnetic conductive cavity (1); the materials in the magnetic conductive cavity (1) are stacked in order from bottom to top, including a first permanent magnet (2), a first outer conductor (3), a first composite ferrite (4), a central conductor (5), a second composite ferrite (4-1), a second outer conductor (3-1), a second permanent magnet (6), a phase adjuster (7), a temperature compensator (8), and a magnetic conductive cover plate (9); a sealed locking system (1-5) is arranged at the top of the magnetic conductive cavity (1), and the magnetic conductive cover plate (9) is used to tighten and install the top to seal it.

2. According to claim 1, the high-power high intermodulation miniaturized surface mount isolator used for 5G base stations is characterized in that: The magnetic conductive cavity (1) is scattered with the center of the cylinder as the origin, and a magnetic conductive receiving cavity (1-4) is arranged, and a first port, a second port and a third port are arranged at equal intervals along the circumference of the magnetic conductive cavity; The third port is provided with a bearing and heat-conducting platform (1-1) for welding a high-power attenuator (12) outwardly, and an attenuation signal angle (14) of the third port is led out at the same time; The angle between the first port and the second port may be 120°, 140°, or 180°; A welding positioning arc is arranged at the bottom of the magnetic conductive cavity along the circumference of the welding surface; The second port leads out and sets a support and transmission system (1-3) for carrying out radio frequency signal transmission and rigid support; a signal transmission channel is set on the support and transmission system (1-3); The second port and the third port are provided with a curved shielding ring (1-2); The first port is inserted into a first input end dielectric ring (10) and a first input signal corner (11), and the second port is inserted into a second input end dielectric ring (10-1) and a second input signal corner (11-1). The signal corner is directly connected to the central conductor and serves as a lead to conduct signals.

3. According to claim 1, the high-power high intermodulation miniaturized surface mount isolator used for 5G base stations is characterized in that: The main body of the central conductor (5) is composed of a Y-junction integrated system (5-3), and an F-type matching capacitor (5-5) is arranged at one end of the radio frequency signal input angle; a signal transmission inductor (5-4) is arranged at one end of the output angle, and a transmission inductor is arranged at one end of the input angle with the Y axis as the center line mirror image, and an absorption end inductor (5-1) is arranged in the negative direction of the Y axis to form a 30 degree angle with the Y-junction integrated system; the design of the integrated circuit system is matched with the inductor and the capacitor.

4. According to claim 3, the high-power high intermodulation miniaturized surface mount isolator used in 5G base stations is characterized in that: The absorption end inductor (5-1) is provided with an inverted L-shaped integrated capacitor, and is connected to the absorption end inductor; a corresponding matching capacitor (5-2) is provided at the tip of the L-shaped integrated capacitor, and the lead-out width is 0.3 mm.

5. According to claim 1, the high-power high intermodulation miniaturized surface mount isolator used for 5G base stations is characterized in that: The first composite ferrite (4) and the second composite ferrite (4-1) are formed by sintering a composite material with a high dielectric constant and ferrite; the composite material is a ring structure with a maximum outer diameter of 22.0 mm, providing support for the gyromagnetic ferrite material, and the ring structure is grayish white. The ferrite material in the composite material is surface polished and coated with a film layer with a thickness of 5 microns.

6. The high-power high intermodulation miniaturized surface mount isolator for 5G base stations according to claim 2 is characterized in that: The attenuation signal angle (14) adopts a hierarchical design and is composed of three parts: a radio frequency signal connection part, a sleeve rod and an end face, wherein the end face is in a circular ring shape and is coated with a metal film layer, and the end face can transmit radio frequency signals; the sleeve rod is inserted through the attenuation end dielectric ring (13); the connection part is connected to the third port of the central conductor (5); the attenuation signal angle (14) supports the transmission of radio frequency signals and is connected to the rigid structure support.

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