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Planar spiral inductor

A technology of spiral inductance and plane spiral, applied in the direction of inductors, printed inductors, fixed inductors, etc., can solve the problem of low inductance value, and achieve the improvement of inductance value, increase inductance value, and increase process achievability. Effect

Pending Publication Date: 2022-04-26
BEIJING INST OF REMOTE SENSING EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing planar spiral inductor adopts the structure of inductance winding on the substrate, the process is simple, but the inductance value is low

Method used

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Embodiment Construction

[0024] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Specific details such as specific system structures, models, and technical parameters proposed in the following descriptions are only for better understanding of the specific embodiments. The limitation shall not affect the protection scope of the present invention. In addition, the content that should be known and understood by those skilled in the art will not be repeated here.

[0025] There is a parasitic capacitance between the inductance coil and the substrate. When the AC current passes through the coil, part of the current will flow to the substrate through the parasitic capacitance in the form of displacement current. Considering the loss mechanism of the inductance, there is metal conductor loss, substrate loss, and at the same time There are skin effect and proximity effect, which increase the loss of electromagnetic energy in spa...

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Abstract

The invention provides a planar spiral inductor, which belongs to the technical field of basic electronic components and comprises spiral inductor arms, inter-arm ceramic dielectric, a ceramic dielectric substrate, a printed circuit board, a first feed input end, a second feed input end, a feed end and a feed arm. The printed circuit board is made of FR4, the printed circuit board is used as a bottom plate, the ceramic dielectric substrate is built on the printed circuit board, the spiral inductance arms and the inter-arm ceramic dielectric spirals are built on the ceramic dielectric substrate and are arranged at intervals, and the spiral inductance arms are arranged on the innermost circle; the two ends of the second feed input end are connected with the end of the outermost spiral inductance arm and the feed end respectively, and the innermost spiral inductance arm extends towards one side of the printed circuit board and is connected to the feed end through the feed arm and the first feed input end. The feed end provides excitation for the spiral inductance arm, and the two ends of the feed arm are connected with the feed end and the spiral inductance arm respectively. Under the condition that the size of the coil is not changed, the inductance value is obviously improved.

Description

technical field [0001] The invention relates to the technical field of basic electronic components, in particular to a planar spiral inductor. Background technique [0002] In recent years, with the rapid development of information technology, higher requirements have been put forward for the miniaturization and integration of electronic equipment. A large number of discrete components such as capacitors, resistors and inductors are usually covered on the printed circuit board. Compared with integrated chips and modules, these discrete passive components occupy most of the area of ​​the printed circuit board, so their miniaturization and planarization are the key to solving the miniaturization and integration of electronic equipment. At the same time, this miniaturization, Integration can reduce interference between components, reduce loss, and improve circuit performance. [0003] Inductance has a greater impact on the weight and volume of a printed circuit board than cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/00H01F27/28H01F27/29H01F27/30H01F27/32
CPCH01F17/0006H01F27/2804H01F27/29H01F27/306H01F27/324H01F2017/004
Inventor 胡海涛
Owner BEIJING INST OF REMOTE SENSING EQUIP
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