Three-dimensional winding inductor, transformer, equalizer and LC filter

A wire-wound inductance, three-dimensional technology, applied in the field of inductance, achieves high reliability, great practical significance and practical value, and shortens the production cycle of products.

Inactive Publication Date: 2016-09-21
THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Q value of this type of planar inductor is only 10-20, which can only meet the application of broadband filters (high-pass, low-pass or band-pass with a relative bandwidth of more than 20%)

Method used

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  • Three-dimensional winding inductor, transformer, equalizer and LC filter
  • Three-dimensional winding inductor, transformer, equalizer and LC filter
  • Three-dimensional winding inductor, transformer, equalizer and LC filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see Figure 1 to Figure 3 , in this embodiment, the three-dimensional wire-wound inductor is a three-dimensional wire-wound inductor with two layers and two turns. The three-dimensional wound inductor includes a PCB (Printed Circuit Board, printed circuit board) 100 , an input pad 210 , an output pad 220 , four conductive channels 301 - 304 and three inductor coil wires 401 - 403 . Wherein, the PCB board 100 is a double dielectric layer PCB board, including a first dielectric layer 110 and a second dielectric layer 120 . The conductive channels 301 - 304 all pass through the first dielectric layer 110 and the second dielectric layer 120 of the PCB 100 . The inductor coil wires 401 - 403 are respectively disposed on the first dielectric layer 110 and the second dielectric layer 120 of the PCB 100 . Moreover, each inductor coil wire is located on the same dielectric layer, and the two ends of each inductor coil wire are respectively connected to two conductive channels....

Embodiment 2

[0044] see Figure 4 and Figure 5 , in this embodiment, the three-dimensional winding inductor is a two-layer four-turn three-dimensional winding inductor. The three-dimensional wound inductor includes a PCB (Printed Circuit Board, printed circuit board) 100 , an input pad 210 , an output pad 220 , eight conductive channels 301 - 308 and seven inductor coil wires 401 - 407 . Wherein, the PCB board 100 is a double dielectric layer PCB board, including a first dielectric layer 110 and a second dielectric layer 120 . The conductive channels 301 - 308 all penetrate the first dielectric layer 110 and the second dielectric layer 120 of the PCB 100 . The inductor coil wires 401 - 407 are respectively disposed on the first dielectric layer 110 and the second dielectric layer 120 of the PCB 100 . In addition, each inductor coil wire is located on the same dielectric layer, and the two ends of each inductor coil wire are respectively connected to two conductive channels. All the in...

Embodiment 3

[0051] see Figure 6 and Figure 7 The difference between the three-dimensional wire-wound inductor in this embodiment and the three-dimensional wire-wound inductor in Embodiment 2 lies in: the middle pad 500 . The middle pad 500 is disposed on the surface of the PCB 120 and located between the input pad 210 and the output pad 220 . The middle pad 500 is connected to the inductor coil wire through a conductive path.

[0052] Specifically, in this embodiment, the surface of the first dielectric layer 110 away from the second dielectric layer 120 is set as the first surface of the first dielectric layer 110 . The inductor coil wire 401 , the inductor coil wire 403 , the inductor coil wire 405 and the inductor coil wire 407 are disposed on the first surface of the first dielectric layer 110 . The inductor wire 402 , the inductor wire 404 and the inductor wire 406 are disposed between the first dielectric layer 110 and the second dielectric layer 120 . The input pad 210 is con...

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Abstract

The invention discloses a three-dimensional winding inductor. The three-dimensional winding inductor comprises a PCB, an input bonding pad, an output bonding pad, a plurality of conductive channels and a plurality of inductive coil conducting wires, wherein the PCB is a PCB including dual dielectric layers or multiple dielectric layers; various conductive channels pass through adjacent two dielectric layers or multiple dielectric layers of the PCB; various inductive coil conducting wires are arranged on the same dielectric layer of the PCB; two ends of various inductive coil conducting wires are respectively connected with two conductive channels; furthermore, all the inductive coil conducting wires are divided into more than two layers; all the inductive coil conducting wires are sequentially connected through the corresponding conductive channels; and two ends of all the inductive coil conducting wires sequentially connected through the corresponding conductive channels are electrically connected to the input bonding pad and the output bonding pad respectively. The Q value of the three-dimensional winding inductor is proper; and thus, the three-dimensional winding inductor can satisfy practical engineering use requirements. The invention further discloses an LC filter, a transformer and an equalizer.

Description

technical field [0001] The invention relates to the technical field of inductance, in particular to a three-dimensional winding inductance, a transformer, an equalizer and an LC filter. Background technique [0002] In radio frequency and microwave circuits, inductive components are used extensively. Taking the lumped parameter filter (LC filter) as an example, air-core inductors and magnetic ring inductors are mainly used as resonant or matching components. At lower frequencies (generally below 150MHz), the required inductance value is larger, and magnetic ring inductors are usually used . At higher frequencies (above 150MHz), the required inductance is smaller, and an air-core inductor is usually used. After the air-core inductor and magnetic ring inductor are assembled, the inductance is adjusted by adjusting the turn spacing of the coil to obtain the final required product performance. Then it is dispensing and curing. The inductance values ​​of air-core inductors an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/00H01F27/28H05K1/16
CPCH01F17/0013H01F27/2804H01F2017/002H01F2017/0026H01F2027/2809H05K1/165
Inventor 李宏军要志宏杨亮王胜福厉建国王磊林立涵张俊杰李丽刘超李丰孙磊磊郑升灵
Owner THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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