Inductor and circulator

Abstract

The invention discloses an inductor and a circulator, and relates to the field of electronic and communication equipment, the inductor comprises a gyromagnetic ferrite and an inductance coil, an input lead group of the inductance coil is provided with an input pin, an output lead group of the inductance coil is provided with an output pin, an extending end of a shielding lead group is split to form two bending parts, and each bending part is provided with a shielding pin. In the winding state, the extending direction of the input pin is parallel to the side face, close to the input pin, of the gyromagnetic ferrite, the extending direction of the output pin is parallel to the side face, close to the output pin, of the gyromagnetic ferrite, the extending direction of the bent part is parallel to the side face, close to the bent part, of the gyromagnetic ferrite, and the extending direction of the shielding pin is perpendicular to the bent part. In the winding state, the input pin, the output pin and the bending part of the inductance coil can be attached to the side edge of the gyromagnetic ferrite, so that the inductor obtains a regular outline, the invalid space occupied by the inductor is eliminated, the installation space of the inductor is effectively reduced, and the inductor can be installed on a smaller circuit substrate.

Description

Technical Field

[0001] The present invention relates to the field of electronic and communication equipment, and in particular to an inductor and a circulator. Background Art

[0002] With the steady development of the 5G era, 5G technology has become a hot topic in the current communications field. As the infrastructure of the 5G network, the construction and design of base stations are of great significance for realizing high-speed, low-latency communication methods. The miniaturization of base stations is an important design direction, and one of the ways to miniaturize base stations is to reduce the volume of base station components. As one of the important devices in the RF module of the base station, the circulator has a circuit substrate inside, and the circuit substrate integrates capacitors, resistors and inductors. The sizes of capacitors and resistors are fixed, and the size of inductors is determined by the shape of the inductor coil and the magnetic core. Therefore, the size of the circuit substrate is mainly related to the size of the inductor, and the size of the circuit substrate can determine the volume of the circulator. Therefore, it can be considered that reducing the size of the inductor can reduce the volume of the circulator. Figure 1 An inductor coil for a circulator known to the inventor is shown. In the unfolded state, three sets of wires extend outward from the substrate. Pins are provided at the extended ends of the wires. The extension direction of the pins is the same as that of the wires. When the inductor coil is wound around the magnetic core, Figure 2 The angle between two adjacent pins of the inductor shown is 120 degrees. Since the edges of the pins are staggered with the edges of the core, the actual edge of the bottom of the inductor is irregular. The actual occupied area of ​​the inductor should be the rectangular area formed by the connection line of the farthest extended ends of each pin. The irregular edges are also difficult to match other components, resulting in some invalid space in the space occupied by the inductor. In addition, the inventor also knows a way to arrange the input pins and output pins of a circulator, such as Figure 3 As shown, such an arrangement requires an additional avoidance area to be set on the circuit board, resulting in the actual occupied area of ​​the circulator being larger than the theoretical occupied area. Summary of the invention

[0003] The purpose of the present invention is to provide an inductor to solve the problems existing in the above-mentioned prior art, including a rectangular gyromagnetic ferrite and an inductor coil wound on the gyromagnetic ferrite. In the wound state, the input pin, output pin and bent portion of the inductor coil can fit the side of the gyromagnetic ferrite, so that the inductor obtains a more regular outline, eliminates the invalid space occupied by the inductor, and effectively reduces the installation space of the inductor, so that the inductor can be installed on a smaller circuit substrate.

[0004] The present invention also provides a circulator, comprising a constant magnetic field body, a capacitor, a resistor, a rectangular circuit substrate and the above-mentioned inductor. The inductor is arranged on the top surface of the circuit substrate, and the size of the circuit substrate matches the inductor. Compared with the prior art, the size of the circuit substrate provided by the present invention is smaller. In addition, in the present invention, the circuit substrate input pin and the circuit substrate output pin are respectively arranged at the middle position of a set of relative edges, and there is no need to set an avoidance area on the circuit board where the circulator is installed, so that the actual occupied area of ​​the circulator is basically the same as the theoretical area.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides an inductor, comprising a rectangular gyromagnetic ferrite and an inductor coil wound on the gyromagnetic ferrite, wherein the inductor coil comprises a substrate for bonding the gyromagnetic ferrite, and an input wire group, an output wire group and a shielding wire group extending outward are arranged on the substrate, a bent input pin is arranged at the extended end of the input wire group, a bent output pin is arranged at the extended end of the output wire group, and the extended end of the shielding wire group is split into two bent parts, and a shielding pin is arranged at the free end of each bent part; in a wound state, the extension direction of the input pin is parallel to the side of the gyromagnetic ferrite close to the input pin, the extension direction of the output pin is parallel to the side of the gyromagnetic ferrite close to the output pin, the extension direction of the bent part is parallel to the side of the gyromagnetic ferrite close to the bent part, and the extension direction of the shielding pin is perpendicular to the bent part.

[0007] In one embodiment, the input pin and the output pin are symmetrically arranged on two sides of the gyromagnetic ferrite, and the two shielding pins are arranged between the input pin and the output pin.

[0008] In one embodiment, in the wound state, the protruding end of the input wire group, the protruding end of the output wire group and the protruding end of the shielding wire group are located in the same plane, the angle between the protruding end of the input wire group and the protruding end of the shielding wire group is 120 degrees, the angle between the protruding end of the shielding wire group and the protruding end of the output wire group is 120 degrees, and the angle between the protruding end of the output wire group and the protruding end of the input wire group is 120 degrees.

[0009] In one embodiment, the input wire group includes two input wires, the output wire group includes two output wires, and the shielded wire group includes two shielded wires.

[0010] In one embodiment, the shape of the substrate is consistent with the shape of the bonding surface of the gyromagnetic ferrite.

[0011] The present invention also provides a circulator, including a constant magnetic field body, a capacitor, a resistor, a rectangular circuit substrate and the above-mentioned inductor, wherein the capacitor, the resistor and the inductor are arranged on the top surface of the circuit substrate, the constant magnetic field body is arranged on the top surface of the inductor, and an insulating fixed layer is arranged between the constant magnetic field body and the inductor; the circuit substrate input pin is arranged in the middle position of the first side of the circuit substrate, and the circuit substrate output pin is arranged on the opposite side of the first side and is symmetrical to the circuit substrate input pin.

[0012] In one embodiment, the length of the circuit substrate is not greater than 3 mm, and the width of the circuit substrate is not greater than 3 mm.

[0013] In one embodiment, it further includes an upper shell and a lower shell, the circuit substrate is arranged on the lower shell, and the upper shell is buckled with the lower shell.

[0014] In one embodiment, the upper shell and the lower shell are made of metal material.

[0015] In one embodiment, the number of the capacitors is 5, and the capacitors are arranged around the input pin and the output pin;

[0016] The number of the resistors is 2, and the resistors are arranged close to the shielding pins.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The present invention provides an inductor, comprising a rectangular parallelepiped gyromagnetic ferrite and an inductor coil wound on the gyromagnetic ferrite. In the wound state, the input pin, the output pin and the bent portion of the inductor coil can fit the side of the gyromagnetic ferrite, so that the inductor obtains a more regular contour, eliminates the invalid space occupied by the inductor, and effectively reduces the installation space of the inductor, so that the inductor can be installed on a smaller circuit substrate.

[0019] The present invention also provides a circulator, comprising a constant magnetic field body, a capacitor, a resistor, a rectangular circuit substrate and the above-mentioned inductor. The inductor is arranged on the top surface of the circuit substrate, and the size of the circuit substrate matches the inductor. Compared with the prior art, the size of the circuit substrate provided by the present invention is smaller. In addition, in the present invention, the circuit substrate input pin and the circuit substrate output pin are respectively arranged at the middle position of a set of relative edges, and there is no need to set an avoidance area on the circuit board where the circulator is installed, so that the actual occupied area of ​​the circulator is basically the same as the theoretical area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 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.

[0021] Figure 1 A schematic diagram of the expanded structure of an inductor coil known to the inventor;

[0022] Figure 2 is a schematic diagram of an inductor structure known to the inventor;

[0023] Figure 3 A circuit substrate pin layout structure diagram known to the inventor;

[0024] Figure 4 Schematic diagram of the expanded structure of an inductor coil in an embodiment of the present invention;

[0025] Figure 5 is a schematic structural diagram of an inductor in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of a circulator in an embodiment of the present invention;

[0027] Figure 7 This is an exploded schematic diagram of a circulator in an embodiment of the present invention;

[0028] Figure 8 Schematic diagram of an assembly structure including a capacitor, a resistor, an inductor and a circuit substrate in an embodiment of the present invention;

[0029] Fig. 9 The present invention is a circuit substrate pin arrangement structure diagram in an embodiment of the present invention.

[0030] Among them, 1. upper shell; 2. constant magnetic field body; 3. inductor; 301. substrate; 302. input wire group; 303. output wire group; 304. shielding wire group; 4. gyromagnetic ferrite; 5. capacitor; 6. resistor; 7. circuit substrate; 701. circuit substrate input pin; 702. circuit substrate output pin; 8. lower shell; 9. insulating fixing layer. 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. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, 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 a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] It should also be noted that in the embodiments of the present application, the same figure mark is used to represent the same component or the same part.

[0034] The purpose of the present invention is to provide an inductor to solve the problems existing in the prior art, including a rectangular ferrite and an inductor coil wound on the ferrite. In the wound state, the input pin, output pin and bent portion of the inductor coil can fit the side of the ferrite, so that the inductor obtains a more regular outline, eliminates the invalid space occupied by the inductor, and effectively reduces the installation space of the inductor, so that the inductor can be installed on a smaller circuit substrate.

[0035] The present invention also provides a circulator, comprising a constant magnetic field body, a capacitor, a resistor, a rectangular circuit substrate and the above-mentioned inductor. The inductor is arranged on the top surface of the circuit substrate, and the size of the circuit substrate matches the inductor. Compared with the prior art, the size of the circuit substrate provided by the present invention is smaller. In addition, in the present invention, the circuit substrate input pin and the circuit substrate output pin are respectively arranged at the middle position of a set of relative edges, and there is no need to set an avoidance area on the circuit board where the circulator is installed, so that the actual occupied area of ​​the circulator is basically the same as the theoretical area.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 4 and Figure 5 As shown, the present invention provides an inductor, including a rectangular gyromagnetic ferrite 4 and an inductor coil 3 wound on the gyromagnetic ferrite 4, the inductor coil 3 includes a substrate 301 for bonding the gyromagnetic ferrite 4, and an input wire group 302, an output wire group 303 and a shielding wire group 304 extending outward are arranged on the substrate 301, a bent input pin is arranged at the extended end of the input wire group 302, a bent output pin is arranged at the extended end of the output wire group 303, and the extended end of the shielding wire group 304 is split into two bent parts, and a shielding pin is arranged at the free end of each bent part. In the wound state, the extension direction of the input pin is parallel to the side of the gyromagnetic ferrite 4 close to the input pin, the extension direction of the output pin is parallel to the side of the gyromagnetic ferrite 4 close to the output pin, the extension direction of the bent part is parallel to the side of the gyromagnetic ferrite 4 close to the bent part, and the extension direction of the shielding pin is perpendicular to the bent part. The input pin, output pin and bend of the inductor coil 3 can fit the side of the gyromagnetic ferrite 4, so that the inductor obtains a more regular outline, eliminates the invalid space occupied by the inductor, and effectively reduces the installation space of the inductor, so that the inductor can be installed on a smaller circuit substrate 7. The protruding end of the shielded wire group 304 is split into two bends, which can overcome the problem that one protruding end must be located at the center of the edge of the gyromagnetic ferrite 4. The two shielding pins are respectively set on the side of the gyromagnetic ferrite 4, breaking through the existing three-pin structure. The fixing effect of four pins is also better than that of three pins, so the stability of the inductor provided by the present invention after installation is also improved to a certain extent.

[0038] like Figure 5 As shown, in one embodiment, the input pin and the output pin are symmetrically arranged on both sides of the gyromagnetic ferrite 4, and the two shielding pins are arranged between the input pin and the output pin.

[0039] like Figure 5As shown, in one embodiment, the extended end of the input wire group 302, the extended end of the output wire group 303 and the extended end of the shielding wire group 304 are located in the same plane, the angle between the extended end of the input wire group 302 and the extended end of the shielding wire group 304 is 120 degrees, the angle between the extended end of the shielding wire group 304 and the extended end of the output wire group 303 is 120 degrees, and the angle between the extended end of the output wire group 303 and the extended end of the input wire group 302 is 120 degrees.

[0040] like Figure 4 and Figure 5 As shown, in one embodiment, the input wire group 302 includes two input wires, the output wire group 303 includes two output wires, and the shielding wire group 304 includes two shielding wires. The number of wires used in each wire group can be adjusted according to actual needs.

[0041] In one embodiment, the shape of the substrate 301 is consistent with the shape of the bonding surface of the gyromagnetic ferrite 4 .

[0042] like Figure 6 to Figure 9 As shown, the present invention also provides a circulator, including a constant magnetic field body 2, a capacitor 5, a resistor 6, a rectangular circuit substrate 7 and the above-mentioned inductor, the capacitor 5, the resistor 6 and the inductor are arranged on the top surface of the circuit substrate 7, the constant magnetic field body 2 is arranged on the top surface of the inductor, the inductor is arranged on the circuit substrate 7, the input pin, the output pin and the shielding pin are electrically connected to the circuit substrate 7, the capacitor 5 and the resistor 6 are arranged around the inductor, and the capacitor 5 and the resistor 6 are both electrically connected to the circuit substrate 7. The circuit substrate input pin 701 is arranged in the middle position of the first side of the circuit substrate 7, the circuit substrate output pin 702 is arranged on the opposite side of the first side and symmetrical to the circuit substrate input pin 701, and an insulating fixed layer 9 is arranged between the constant magnetic field body 2 and the inductor. The insulating fixed layer 9 can prevent the inductor from short-circuiting and reduce the energy loss of the inductor. At the same time, it can play a role in fixing the inductor to make the inductor more stable. The size of the circuit substrate 7 matches the inductor. Compared with the prior art, the circuit substrate provided by the present invention is smaller in size, so that the overall size of the circulator is smaller. In addition, the circuit substrate input pin 701 and the circuit substrate output pin 702 in the present invention are respectively arranged at the middle position of a set of relative edges, and there is no need to set an avoidance area on the circuit board where the circulator is installed, so that the actual occupied area of ​​the circulator is basically the same as the theoretical area.

[0043] In one embodiment, the constant magnetic field body 2 is made of one of aluminum nickel cobalt magnets, ferrite magnets or rare earth permanent magnetic materials.

[0044] In one embodiment, the length of the circuit substrate 7 is not greater than 3 mm, and the width of the circuit substrate 7 is not greater than 3 mm.

[0045] In one embodiment, the insulating fixed layer 9 is made of a high molecular organic polymer material, such as polyethylene.

[0046] like Figure 6 and Figure 7 As shown, in one embodiment, it also includes an upper shell 1 and a lower shell 8 , the circuit substrate 7 is arranged on the lower shell 8 , and the upper shell 1 is buckled with the lower shell 8 .

[0047] In one embodiment, the upper shell 1 and the lower shell 8 are made of metal material.

[0048] like Figure 7 As shown, in one embodiment, the number of capacitors 5 is 5, and the capacitors 5 are arranged around the input pin and the output pin. The number of resistors 6 is 2, and the resistors 6 are arranged close to the shielding pin. The number of capacitors 5 and resistors 6 used can be adjusted as needed. The capacitor 5 and the inductor work together to form a resonant circuit, which has the function of filtering non-specified frequency signals. Changing the capacity of the capacitor 5 can change the frequency of the signal allowed to pass, and adjust and stabilize the input signal and the output signal. The resistor 6 can convert the reverse input signal into heat energy consumption, and play a role in shielding interference.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An inductor, characterized in that: The invention comprises a rectangular parallelepiped gyromagnetic ferrite (4) and an inductor (3) wound on the gyromagnetic ferrite (4), wherein the inductor (3) comprises a substrate (301) for bonding the gyromagnetic ferrite (4), an input wire group (302), an output wire group (303) and a shielding wire group (304) extending outward are arranged on the substrate (301), a bent input pin is arranged at the protruding end of the input wire group (302), a bent output pin is arranged at the protruding end of the output wire group (303), and the protruding end of the shielding wire group (304) is split into two bent parts, and a shielding pin is arranged at the free end of each bent part; In the wound state, the extension direction of the input pin is parallel to the side of the gyromagnetic ferrite (4) close to the input pin, the extension direction of the output pin is parallel to the side of the gyromagnetic ferrite (4) close to the output pin, the extension direction of the bent portion is parallel to the side of the gyromagnetic ferrite (4) close to the bent portion, and the extension direction of the shielding pin is perpendicular to the bent portion.

2. The inductor according to claim 1, characterized in that: The input pin and the output pin are symmetrically arranged on both sides of the gyromagnetic ferrite (4), and the two shielding pins are arranged between the input pin and the output pin.

3. The inductor according to claim 2, characterized in that: In the wound state, the protruding end of the input wire group (302), the protruding end of the output wire group (303) and the protruding end of the shielding wire group (304) are located in the same plane, the angle between the protruding end of the input wire group (302) and the protruding end of the shielding wire group (304) is 120 degrees, the angle between the protruding end of the shielding wire group (304) and the protruding end of the output wire group (303) is 120 degrees, and the angle between the protruding end of the output wire group (303) and the protruding end of the input wire group (302) is 120 degrees.

4. The inductor according to claim 1, characterized in that: The input wire group (302) includes two input wires, the output wire group (303) includes two output wires, and the shielded wire group (304) includes two shielded wires.

5. The inductor according to claim 1, characterized in that: The shape of the substrate (301) is consistent with the shape of the bonding surface of the gyromagnetic ferrite (4).

6. A circulator, characterized in that: A rectangular circuit substrate (7) comprising a constant magnetic field body (2), a capacitor (5), a resistor (6), and an inductor according to any one of claims 1 to 5, wherein the capacitor (5), the resistor (6) and the inductor are arranged on the top surface of the circuit substrate (7), the constant magnetic field body (2) is arranged on the top surface of the inductor, and an insulating fixed layer (9) is arranged between the constant magnetic field body (2) and the inductor; The circuit substrate input pin (701) is arranged at the middle position of the first side of the circuit substrate (7), and the circuit substrate output pin (702) is arranged on the opposite side of the first side and is symmetrical to the circuit substrate input pin (701).

7. The circulator according to claim 6, characterized in that: The length of the circuit substrate (7) is not greater than 3 millimeters, and the width of the circuit substrate (7) is not greater than 3 millimeters.

8. The circulator according to claim 6, characterized in that: It also comprises an upper shell (1) and a lower shell (8), the circuit substrate (7) being arranged on the lower shell (8), and the upper shell (1) being buckled with the lower shell (8).

9. The circulator according to claim 8, characterized in that: The upper shell (1) and the lower shell (8) are made of metal material.

10. The circulator according to claim 6, characterized in that: The number of the capacitors (5) is 5, and the capacitors (5) are arranged around the input pin and the output pin; The number of the resistors (6) is two, and the resistors (6) are arranged close to the shielding pins.

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