A low-loss planar inductor

Abstract

The present invention discloses a low-loss planar inductor, comprising an inductor body and a frame for fixing the inductor body, the frame comprising a base and a placement body integrally formed with the base, the placement body having an opening on one side and a cover body hinged on the top, rectangular holes on both sides of the placement body, and the rectangular holes are connected to the cover body, an electrode column extends from the bottom of the inductor body, the electrode column extends from the rectangular hole, the top of the base and the bottom of the placement body are on the same surface, and the sheet is provided with a pin outlet for passing the pin of the inductor body. Compared with the prior art, the advantages of the present invention are: the frame is used for placing the inductor body inside the placement body, the frame is used for placing on a circuit board, and when the inductor is damaged, the planar inductor body inside the placement body can be replaced, and because the rectangular holes and rectangular perforations are provided on the frame, the heat dissipation effect can be increased and the loss can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of semiconductors, and in particular to a low-loss planar inductor. Background Art

[0002] In the development of CMOS radio frequency integrated circuits (RFIC), the most urgent and difficult thing is to develop high-performance new devices and new unit circuits, which are the basis for realizing monolithic CMOS integrated RF front-end. As a key component in RFIC, planar inductors are the most difficult components to design and master in the circuit, and their performance parameters directly affect the performance of RFIC. On-chip inductors can realize the integration of inductors in RFIC.

[0003] On-chip planar inductors are mostly made by winding metal films on silicon substrates. Compared with traditional wire-wound inductors, on-chip planar inductors have the advantages of low cost, easy integration, low noise and low power consumption. More importantly, they are compatible with today's CMOS process. In recent years, as mobile communications have developed towards miniaturization and low power consumption, more and more research has been conducted on the production of high-quality on-chip passive devices that are compatible with CMOS processes.

[0004] The existing inductor is a consumable in the circuit. Once the inductor is damaged, the entire circuit board will be unusable. Therefore, it is very important to obtain a low-loss planar inductor that is easy to replace. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a low-loss planar inductor, including an inductor body and a frame for fixing the inductor body, the frame including a base and a placement body integrally formed with the base, one side of the placement body is open, and a cover body is hinged on the top of the placement body, rectangular holes are provided on both sides of the placement body, and the rectangular holes are connected to the cover body, an electrode column extends from the bottom of the inductor body, the top of the base and the bottom of the placement body are on the same surface, and the sheet is provided with a pin outlet for the pins of the inductor body to pass through.

[0006] One end of the cover is hinged to the top of the placement body, and the other end is integrally formed with a protrusion, and a groove is provided at the bottom of the cover, and the protrusion cooperates with the groove, and the cover is fixed by the protrusion. The protrusion is made of silicone or rubber and has the same shape and size as the groove.

[0007] A rectangular through hole is provided on the top of the placement body and a support foot is fixed on the bottom of the placement body.

[0008] Through the above technical solution, the skeleton is used to place the inductor body inside the body, and the skeleton is used to be placed on the circuit board. When the inductor is damaged, the planar inductor body placed inside the body can be replaced. Moreover, since rectangular holes and rectangular perforations are opened on the skeleton, the heat dissipation effect can be increased and the loss can be reduced.

[0009] The planar inductor includes a coil, which is formed by spirally winding a plurality of enameled copper wires in the same plane, with pins extending from the start and end of the winding, and the pins are stripped of paint and tinned, and a magnetic core is inserted in the center of the coil. The pins are perpendicular to the coil. A shell is provided outside the coil, the coil is fixed in the shell, and two pins pass through holes opened at the bottom or side of the shell.

[0010] Compared with the prior art, the advantages of the present invention are: the skeleton is used to place the inductor body inside the body, the skeleton is used to be placed on the circuit board, and when the inductor is damaged, the planar inductor body placed inside the body can be replaced, and because the skeleton is provided with rectangular holes and rectangular perforations, the heat dissipation effect can be increased and the loss can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the skeleton of the present invention;

[0012] Figure 2 It is a three-dimensional diagram of the structure of the present invention;

[0013] Figure 3 It is a cross-sectional schematic diagram of the present invention;

[0014] Figure 4 is a schematic diagram of the structure of a planar inductor of the present invention;

[0015] Figure 5 It is a schematic diagram of the internal structure of the planar inductor of the present invention;

[0016] Figure numerals: 1-inductor body; 2-skeleton; 3-placing body; 4-cover body; 5-rectangular hole; 6-electrode column; 7-pin outlet; 8-protrusion; 9-groove; 10-rectangular perforation; 11-support foot; 12-enameled copper wire; 13-housing. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of the protection claimed in the present invention, the present invention is described in detail with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementations of the present invention, which are only some embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention.

[0018] Referring to the accompanying drawings, the present invention adopts the following technical scheme: a low-loss planar inductor, including an inductor body and a frame for fixing the inductor body, the frame including a base and a placement body integrally formed with the base, the placement body having an opening on one side and a cover body hinged on the top, rectangular holes on both sides of the placement body, and the rectangular holes are connected to the cover body, an electrode column extends from the bottom of the inductor body, the top of the base and the bottom of the placement body are on the same surface, and the sheet is provided with a pin outlet for the pins of the inductor body to pass through.

[0019] One end of the cover is hinged to the top of the placement body, and the other end is integrally formed with a protrusion, and a groove is provided at the bottom of the cover, and the protrusion cooperates with the groove, and the cover is fixed by the protrusion. The protrusion is made of silicone or rubber and has the same shape and size as the groove.

[0020] A rectangular through hole is provided on the top of the placement body and a support foot is fixed on the bottom of the placement body.

[0021] The skeleton is used to place the inductor body inside the body. The skeleton is used to be placed on the circuit board. When the inductor is damaged, the planar inductor body placed inside the body can be replaced. In addition, since rectangular holes and rectangular perforations are opened on the skeleton, the heat dissipation effect can be increased and the loss can be reduced.

[0022] The planar inductor includes a coil, which is formed by spirally winding a number of enameled copper wires in the same plane, with lead pins at the starting and end of the winding, and the pins are stripped of paint and tinned, and a magnetic core is inserted in the center of the coil. The pins are perpendicular to the coil. A shell is provided outside the coil, the coil is fixed in the shell, and two pins pass through holes opened at the bottom or side of the shell. Compared with the existing inductor spirally wound along the axial direction of the coil, when the same current passes through, the height of the device is greatly reduced, thereby greatly reducing the space occupied by the device in the application environment of high-current inductors, which is conducive to the miniaturization of the product. The structure of the shell is compatible with the structure of the placement body.

[0023] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A low-loss planar inductor, comprising an inductor body (1), characterized in that: It also includes a frame (2) for fixing the inductor body (1), the frame (2) including a base and a placement body (3) integrally formed with the base, the placement body (3) having an opening on one side and a cover body (4) hinged on the top, rectangular holes (5) on both sides of the placement body (3), and the rectangular holes (5) are connected to the cover body (4), an electrode column (6) extends from the bottom of the inductor body (1), the top of the base and the bottom of the placement body (3) are on the same surface, and the sheet is provided with a pin outlet (7) for the pins of the inductor body (1) to pass through; The planar inductor comprises a coil, which is formed by spirally winding a plurality of enameled copper wires (12) in the same plane, with pins extending from the starting end and the end of the winding, and the pins are stripped of paint and tinned, and a magnetic core is inserted into the center of the coil; the pins are perpendicular to the coil; a shell (13) is arranged outside the coil, the coil is fixed in the shell (13), and two pins pass through holes opened at the bottom or side of the shell (13).

2. The low-loss planar inductor according to claim 1, characterized in that: One end of the cover body (4) is hinged to the top of the placement body (3), and the other end is integrally formed with a protrusion (8). A groove (9) is provided at the bottom of the cover body (4), and the protrusion (8) cooperates with the groove (9), and the cover body (4) is fixed by the protrusion (8).

3. The low-loss planar inductor according to claim 1, characterized in that: The top of the placement body (3) is provided with a rectangular through hole (10).

4. The low-loss planar inductor according to claim 1, characterized in that: A supporting foot (11) is fixed on the bottom of the placement body (3).

5. The low-loss planar inductor according to claim 2, characterized in that: The protrusion (8) is made of silicone or rubber and has the same shape and size as the groove (9).

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