A multi-rotational magnetic combination fully shielded circulator

Abstract

The present invention relates to the field of communication technology, and specifically to a multi-rotational magnetic combination fully shielded circulator, comprising an upper cavity, an upper uniform magnetic sheet, an upper permanent magnet, a lower cavity, a lower permanent magnet, a lower uniform magnetic sheet, an upper rotational magnet and a lower rotational magnet, wherein the upper uniform magnetic sheet and the upper permanent magnet are arranged in the upper cavity, the lower permanent magnet and the lower uniform magnetic sheet are arranged in the lower cavity, the upper rotational magnet is arranged on one side of the upper cavity, the lower rotational magnet is arranged on one side of the lower cavity corresponding to the upper rotational magnet, and further comprising an inner conductor, a plurality of capacitor rods and a plurality of wave absorbing columns, wherein the inner conductor is arranged between the upper cavity and the lower cavity, the capacitor rods are distributed around the inner conductor, and the plurality of wave absorbing columns are distributed around the inner conductor. The circulator can maintain high-performance operation in various complex electromagnetic environments, and at the same time, through a fully shielded structure, external interference is prevented and the safety and reliability of the equipment are ensured.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a multi-rotational magnetic combination fully shielded circulator. Background Art

[0002] The basic working principle of the circulator is to use the magnetic anisotropy of ferrite materials, combined with the effect of an external magnetic field, so that electromagnetic waves can only be transmitted in a certain direction within a closed path. When a signal enters one port of the circulator, it will be directed to the next port and cannot be transmitted in the opposite direction. For example, in a three-port circulator, if the signal enters from port 1, it will be output from port 2; if the signal tries to enter from port 3, it will be directed to port 1, and so on.

[0003] With the development of mobile communication technology, higher requirements are placed on the size, weight, bandwidth and performance of circulators. This circulator is developed based on this background. It plays the role of circulation, isolation, amplitude modulation, etc. in microwave circuits and is used in communications, radar, aerospace, electronic countermeasures and other fields.

[0004] The prior art provides an SMT circulator for a video transmission system, comprising a silver-plated cavity, wherein a lower ferrite gyromagnet, a double Y-shaped inner conductor, an upper ferrite gyromagnet, a magnetic sheet, a permanent magnet and an upper cover plate are sequentially arranged in the silver-plated cavity from bottom to top, and the upper cover plate is screwed and fixed to the top of the silver-plated cavity by screwing; the silver-plated cavity is provided with guide grooves at intervals of 120°; a connecting block extends outward from the bottom of the guide groove; a connecting hole is provided on the connecting block; the double Y-shaped inner conductor and the magnetic sheet are clamped in the guide groove; the double Y-shaped inner conductor is fixed to the silver-plated cavity by a connecting column and a connecting sleeve.

[0005] However, the anti-interference capability of the above structure is poor, so the reliability of using it in complex environments is not high. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-rotational magnetic combination fully shielded circulator, which is intended to enable the circulator to maintain high performance operation in various complex electromagnetic environments, while preventing external interference and ensuring the safety and reliability of the equipment through a fully shielded structure.

[0007] To achieve the above-mentioned objectives, the present invention provides a multi-rotational magnetic combination fully shielded circulator, comprising an upper cavity, an upper uniform magnetic sheet, an upper permanent magnet, a lower cavity, a lower permanent magnet, a lower uniform magnetic sheet, an upper rotating magnet and a lower rotating magnet, wherein the upper uniform magnetic sheet and the upper permanent magnet are arranged in the upper cavity, the lower permanent magnet and the lower uniform magnetic sheet are arranged in the lower cavity, the upper rotating magnet is arranged on one side of the upper cavity, the lower rotating magnet is arranged on one side of the lower cavity corresponding to the upper rotating magnet, and further comprising an inner conductor, a plurality of capacitor rods and a plurality of absorbing columns, wherein the inner conductor is arranged between the upper cavity and the lower cavity, the capacitor rods are distributed around the inner conductor, and the plurality of absorbing columns are distributed around the inner conductor.

[0008] Wherein, the capacitor rod comprises an upper rod and a lower rod, the lower rod is fixedly connected to the upper rod, and the lower rod is an insulator.

[0009] The inner conductor is a quasi-double-Y structure, and has six matching branches, an open line, a port and an interface.

[0010] Wherein, the inner conductor is made of copper, and the surface treatment is EP.Cu (2-3 μm) Ag (5-7 μm).

[0011] Wherein, the upper magnetic shim sheet and the lower magnetic shim sheet are surface treated with EP.Cu (2-3 μm) Ag (5-7 μm).

[0012] Wherein, the upper permanent magnet and the lower permanent magnet are surface-treated with EP.Ni (5-7 μm).

[0013] The gyromagnet includes an inner ring magnet and an outer ring magnet, and the magnetic moment of the inner ring magnet is greater than the magnetic moment of the outer ring magnet.

[0014] Among them, the multi-rotation magnetic combination fully shielded circulator also includes a magnetic enclosure and an H-type magnetic enclosure plate. The magnetic enclosure surrounds the upper cavity and the lower cavity, and the H-type magnetic enclosure plate is used to close the opening of the magnetic enclosure.

[0015] The multi-rotational magnetic combination fully shielded circulator further comprises a positioning block, wherein the positioning block is arranged on the top of the inner conductor, and the port impedance of the inner conductor is adjusted by adjusting the capacitance rod to squeeze the positioning block.

[0016] Wherein, the surface treatment of the magnetic sealing shell and the H-type magnetic sealing plate adopts EP.Cu (2-3 μm) Ag (5-7 μm).

[0017] The present invention discloses a multi-rotational magnetic combination fully shielded circulator, wherein the upper cavity is a part of the outer shell of the device, which is made of aluminum material, is used to accommodate internal components, and provides a closed space to control the electromagnetic field. The upper uniform magnetic sheet is placed in the upper cavity, and the uniformity of the internal magnetic field is adjusted by its magnetic field distribution, thereby affecting the working characteristics of the circulator. The upper permanent magnet is also a permanent magnet placed in the upper cavity, which is used to generate a constant magnetic field and guide the signal passing through the circulator. The lower cavity corresponds to the upper cavity and constitutes the lower half of the device. The lower permanent magnet corresponds to the upper permanent magnet and is placed in the lower cavity, and works together to establish the required magnetic field environment. The lower uniform magnetic sheet is located in the lower cavity and works together with the upper uniform magnetic sheet to ensure the uniform distribution of the magnetic field inside the entire device. The upper rotating magnet is installed on one side of the upper cavity and can be rotated and adjusted to change the direction or strength of the magnetic field. The lower rotating magnet is installed on one side of the lower cavity, corresponding to the upper rotating magnet, and can be rotated and adjusted synchronously to optimize the working performance of the circulator. The inner conductor is located between the upper cavity and the lower cavity, serving as a channel for signal transmission. Multiple capacitance rods are distributed around the inner conductor to adjust the capacitance value in the circuit, thereby affecting the frequency response of the signal. Multiple absorbing columns are also distributed around the inner conductor to absorb excess electromagnetic waves, reduce reflection and interference, and improve the isolation of the system. The absorbing columns absorb the circulator clutter and eliminate high-order modes by adding absorbing columns, so as to make the circulator electrical performance curve smooth.

[0018] This design enables the circulator to maintain high performance in a variety of complex electromagnetic environments, while preventing external interference and ensuring the safety and reliability of the equipment through a fully shielded structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is the first exploded structural diagram of a multi-rotational magnetic combination fully shielded circulator of the present invention.

[0021] Figure 2 This is the second exploded structural diagram of a multi-rotational magnetic combination fully shielded circulator of the present invention.

[0022] Figure 3 It is the third exploded structural diagram of a multi-rotational magnetic combination fully shielded circulator of the present invention.

[0023] Figure 4 2 is a structural diagram of the inner conductor of the present invention.

[0024] Figure 5 It is a structural diagram of a multi-rotational magnetic combination fully shielded circulator of the present invention.

[0025] Upper cavity 101, upper uniform magnetic sheet 102, upper permanent magnet 103, lower cavity 104, lower permanent magnet 105, lower uniform magnetic sheet 106, upper rotating magnet 107, lower rotating magnet 108, inner conductor 109, capacitor rod 110, absorbing column 111, upper rod 112, lower rod 113, inner circle magnet 114, outer circle magnet 115, magnetic sealing shell 116, H-shaped magnetic sealing plate 117, and positioning block 118. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] See also Figure 1 to Figure 5 The present invention provides a multi-rotational magnetic combination fully shielded circulator, comprising an upper cavity 101, an upper uniform magnetic sheet 102, an upper permanent magnet 103, a lower cavity 104, a lower permanent magnet 105, a lower uniform magnetic sheet 106, an upper rotational magnet 107 and a lower rotational magnet 108, wherein the upper uniform magnetic sheet 102 and the upper permanent magnet 103 are arranged in the upper cavity 101, the lower permanent magnet 105 and the lower uniform magnetic sheet 106 are arranged in the lower cavity 104, and the upper rotational magnet 107 and the lower rotational magnet 108 are arranged in the lower cavity 104. 7 is arranged on one side of the upper cavity 101, the downward rotating magnet 108 is arranged on one side of the lower cavity 104 corresponding to the upward rotating magnet 107, and also includes an inner conductor 109, a plurality of capacitor rods 110 and a plurality of absorbing columns 111, the inner conductor 109 is arranged between the upper cavity 101 and the lower cavity 104, the capacitor rods 110 are distributed around the inner conductor 109, and the plurality of absorbing columns 111 are distributed around the inner conductor 109.

[0029] In this embodiment, a multi-rotational magnetic combination fully shielded circulator is intended to provide an efficient and well-shielded working environment to ensure signal purity and system stability.

[0030] The upper cavity 101 has a size of 20x21x2.65mm and is made of 6061 aluminum with natural oxidation treatment. The upper cavity 101 is a part of the device shell, made of aluminum, used to accommodate internal components and provide a closed space to control the electromagnetic field. The upper uniform magnetic sheet 102 is placed in the upper cavity 101, and adjusts the uniformity of the internal magnetic field through its magnetic field distribution, thereby affecting the working characteristics of the circulator. The upper permanent magnet 103 is also a permanent magnet placed in the upper cavity 101, which is used to generate a constant magnetic field to guide the signal passing through the circulator.

[0031] The lower chamber 104 has a size of 20x21x5.35mm and is made of 6061 aluminum with natural color oxidation treatment; the lower chamber 104 corresponds to the upper chamber 101 and constitutes the lower half of the device. The lower permanent magnet 105 corresponds to the upper permanent magnet 103 and is placed in the lower chamber 104 to work together to establish the required magnetic field environment. The lower uniform magnetic sheet 106 is located in the lower chamber 104 and works together with the upper uniform magnetic sheet 102 to ensure the uniform distribution of the magnetic field inside the entire device.

[0032] The upper rotating magnet 107 is installed on one side of the upper cavity 101 and can be rotated to change the direction or strength of the magnetic field. The lower rotating magnet 108 is installed on one side of the lower cavity 104 and corresponds to the upper rotating magnet 107 and can be rotated synchronously to optimize the working performance of the circulator.

[0033] The inner conductor 109 is located between the upper cavity 101 and the lower cavity 104, and serves as a channel for signal transmission. A plurality of capacitance rods 110 are distributed around the inner conductor 109 to adjust the capacitance value in the circuit, thereby affecting the frequency response of the signal. A plurality of absorbing columns 111 are also distributed around the inner conductor 109 to absorb excess electromagnetic waves, reduce reflection and interference, and improve the isolation of the system. The absorbing columns 111 absorb the circulator clutter and eliminate high-order modes by adding absorbing columns 111, so as to make the electrical performance curve of the circulator smooth.

[0034] This design enables the circulator to maintain high performance in a variety of complex electromagnetic environments, while preventing external interference and ensuring the safety and reliability of the equipment through a fully shielded structure.

[0035] The capacitor rod 110 includes an upper rod 112 and a lower rod 113 . The lower rod 113 is fixedly connected to the upper rod 112 , and the lower rod 113 is an insulator.

[0036] The upper rod 112 of the capacitor rod 110 is made of 416 stainless steel, and the lower rod 113 is designed with a large cylindrical insulator. The large cylinder has a diameter of 2.5mmX0.5mm and contacts the PTFE positioning block 118 through crimping to increase the contact area and eliminate the risk of squeezing the positioning block 118 and causing a short circuit.

[0037] The inner conductor 109 is a quasi-double-Y structure, and has six matching branches, an open line, a port and an interface.

[0038] The inner conductor 109 is designed as a quasi-double Y structure with six matching branches, which help to improve the transmission characteristics of the signal. In addition, open lines, ports and interfaces are provided for connecting other components or systems. The use of 6 sections of 1 / 4 wavelength and a multi-magnetic Ms co-organized gyromagnet design effectively reduces the size of the product and enables the circulator to have a wider bandwidth (the relative bandwidth of the circulator of the present invention reaches 48.7%) and higher electrical performance (insertion loss; 1.1dB, return loss: 20dB, isolation plating: 20dB);

[0039] A08 is a small Y open line, A09 is the interface of the circulator of the present invention, wherein the large Y adopts the Chebyshev impedanceconverter principle: under the design frequency band of the present invention, it is calculated that n≈6, A01 is the first matching branch, A02 is the second matching branch, A03 is the third matching branch, A04 is the fourth matching branch, A05 is the fifth matching branch, and A06 is the sixth matching branch.

[0040] The lengths and widths of the six matching branches A01 to A06 are finally calculated using microwave design software.

[0041] The inner conductor 109 is made of copper, and the surface treatment is EP.Cu (2-3 μm) Ag (5-7 μm).

[0042] The inner conductor 109 is surface treated with EP.Cu2~3μmAg5~7μm and is made of H62-1 / 2H copper.

[0043] The upper magnetic shim sheet 102 and the lower magnetic shim sheet 106 are surface treated with EP.Cu (2-3 μm) Ag (5-7 μm) to form a uniform magnetic field, thereby improving the electrical performance of the circulator of the present invention.

[0044] The upper permanent magnet 103 and the lower permanent magnet 105 are surface-treated to EP.Ni (5-7 μm).

[0045] The inner conductor 109 uses copper as a base material, and is plated on its surface, specifically: firstly a layer of copper (Cu) with a thickness of about 2 to 3 microns is plated, and then a layer of silver (Ag) with a thickness of about 5 to 7 microns is plated. This treatment method improves the electrical conductivity and corrosion resistance of the conductor.

[0046] The upper chamber 101 is also subjected to similar surface treatment, ie, copper plating and silver plating. The lower chamber 104 is nickel-plated (Ni) with a thickness of about 5 to 7 microns to enhance its mechanical strength and corrosion resistance.

[0047] The gyromagnet includes an inner ring magnet 114 and an outer ring magnet 115 , and the magnetic moment of the inner ring magnet 114 is greater than the magnetic moment of the outer ring magnet 115 .

[0048] The gyromagnet is composed of an inner ring magnet 114 and an outer ring magnet 115, wherein the magnetic moment (a measure of magnetic strength) of the inner ring magnet 114 is greater than that of the outer ring magnet 115, and a high-low magnetic moment design is adopted, with the inner ring having a high MS: 1100GS and the outer ring having a low MS: 600GS, which helps to form a non-uniform magnetic field and further optimize the function of the circulator.

[0049] The multi-rotation magnetic combination fully shielded circulator further includes a magnetic enclosure 116 and an H-shaped magnetic enclosure plate 117 . The magnetic enclosure 116 surrounds the upper cavity 101 and the lower cavity 104 . The H-shaped magnetic enclosure plate 117 is used to seal the opening of the magnetic enclosure 116 .

[0050] In order to further enhance the shielding effect, the circulator is also equipped with a magnetic enclosure 116, which surrounds the upper cavity 101 and the lower cavity 104, and the H-shaped magnetic enclosure plate 117 is used to seal the opening of the magnetic enclosure 116. The magnetic enclosure 116 and the H-shaped magnetic enclosure plate 117 are also treated with copper and silver plating to enhance their conductivity and protection. The two are used together to completely close the magnetic circuit and avoid the interference of magnetic leakage on the electromagnetic signal of the terminal system.

[0051] The multi-rotation magnetic combination fully shielded circulator also includes a positioning block 118, which is arranged on the top of the inner conductor 109. The port impedance of the inner conductor 109 is adjusted by adjusting the capacitor rod 110 to squeeze the positioning block 118. A positioning block 118 is arranged on the top of the inner conductor 109. By adjusting the pressure of the capacitor rod 110 on the positioning block 118, the impedance of the port of the inner conductor 109 can be changed, thereby achieving fine-tuning of the signal transmission characteristics. The positioning block 118 and the capacitor rod 110 adjust the impedance of port A07 by rotating the capacitor rod 110 to squeeze the positioning block 118, reduce the size of port A07, and thus reduce the size of the product.

[0052] The surface treatment of the magnetic sealing shell 116 and the H-type magnetic sealing plate 117 adopts EP.Cu (2-3 μm) Ag (5-7 μm).

[0053] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A multi-rotational magnetic combination fully shielded circulator, comprising an upper cavity, an upper uniform magnetic sheet, an upper permanent magnet, a lower cavity, a lower permanent magnet, a lower uniform magnetic sheet, an upper rotational magnet and a lower rotational magnet, wherein the upper uniform magnetic sheet and the upper permanent magnet are arranged in the upper cavity, the lower permanent magnet and the lower uniform magnetic sheet are arranged in the lower cavity, the upper rotational magnet is arranged on one side of the upper cavity, and the lower rotational magnet is arranged on one side of the lower cavity corresponding to the upper rotational magnet, characterized in that: It also includes an inner conductor, a plurality of capacitor rods and a plurality of absorbing columns, wherein the inner conductor is arranged between the upper cavity and the lower cavity, the capacitor rods are distributed around the inner conductor, and the plurality of absorbing columns are distributed around the inner conductor, the capacitor rods include an upper rod and a lower rod, the lower rod is fixedly connected to the upper rod, the lower rod is an insulator, and the upper rod is a conductor.

2. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 1, characterized in that: The inner conductor is a quasi-double-Y structure, and has six matching branches, an open line, a port and an interface.

3. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 2, characterized in that: The inner conductor is made of copper, and the surface is plated with a layer of copper with a thickness of 2 to 3 microns, and then a layer of silver with a thickness of 5 to 7 microns.

4. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 3, characterized in that: The surfaces of the upper magnetic shim sheet and the lower magnetic shim sheet are plated, firstly a layer of copper with a thickness of 2 to 3 microns is plated, and then a layer of silver with a thickness of 5 to 7 microns is plated.

5. A multi-rotational magnetic combined fully shielded circulator as claimed in claim 4, characterized in that: The surfaces of the upper permanent magnet and the lower permanent magnet are plated with 5-7 μm nickel.

6. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 5, characterized in that: The upward rotating magnet and the downward rotating magnet include an inner circle magnet and an outer circle magnet, and the magnetic moment of the inner circle magnet is greater than the magnetic moment of the outer circle magnet.

7. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 6, characterized in that: The multi-rotation magnetic combination fully shielded circulator also includes a magnetic enclosure and an H-shaped magnetic enclosure plate. The magnetic enclosure surrounds the upper cavity and the lower cavity. The H-shaped magnetic enclosure plate is used to close the opening of the magnetic enclosure.

8. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 7, characterized in that: The multi-rotational magnetic combination fully shielded circulator also includes a positioning block, which is arranged on the top of the inner conductor. The port impedance of the inner conductor is adjusted by adjusting the capacitance rod to squeeze the positioning block.

9. A multi-rotational magnetic combination fully shielded circulator as claimed in claim 8, characterized in that: The surfaces of the magnetic sealing shell and the H-shaped magnetic sealing plate are plated, firstly a layer of copper with a thickness of 2 to 3 microns is plated, and then a layer of silver with a thickness of 5 to 7 microns is plated.

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