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electronic module

A technology of electronic modules and bobbins, applied to circuits, electrical components, antennas, etc., can solve problems such as inability to obtain more accurate adjustments, failure to obtain resonant frequency of floating capacitance, and inability to adjust floating capacitance of coils, etc., to achieve The effect of good winding state and preventing deviation

Active Publication Date: 2019-03-22
SUMIDA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing small antenna coil products are usually unable to adjust the floating capacitance of the coil. The state of the winding determines the state of the floating capacitance. In this way, the corresponding resonant frequency cannot be adjusted effectively because the floating capacitance cannot be adjusted effectively. precise adjustment

Method used

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Embodiment 1

[0029] Such as Figure 1 to Figure 3 As shown, an electronic module includes a bobbin 10, a chip 30 and a coil 20, the bobbin 10 is provided with an accommodating groove 14, the chip 30 is installed in the accommodating groove 14, and the coil 20 is wound on the winding frame 10. On the bobbin 10, the coil 20 has a start portion 21 and an end portion 22, the start portion 21 and the end portion 22 are respectively electrically connected to the chip 30, and the outer wall of the bobbin frame 10 is provided with four A positioning mechanism for positioning the starting portion 21 .

[0030] Wherein, the positioning mechanism is a bar-shaped protrusion 40 . The winding frame 10 includes a winding portion 13 and a supporting wall plate, the winding portion 13 is fixedly arranged on the supporting wall plate, and the winding portion 13 and the supporting wall plate surround the accommodating groove 14 , the strip-shaped protrusion 40 is provided on the outer wall of the winding p...

Embodiment 2

[0041] Such as figure 1 , figure 2 and Figure 4 As shown, an electronic module includes a bobbin 10, a chip 30 and a coil 20, the bobbin 10 is provided with an accommodating groove 14, the chip 30 is installed in the accommodating groove 14, and the coil 20 is wound on the winding frame 10. On the bobbin 10, the coil 20 has a start portion 21 and an end portion 22, the start portion 21 and the end portion 22 are respectively electrically connected to the chip 30, and the outer wall of the bobbin frame 10 is provided with four A positioning mechanism for positioning the starting portion 21 .

[0042] Wherein, the positioning mechanism is a bar-shaped depression 50 . The winding frame 10 includes a winding portion 13 and a supporting wall plate, the winding portion 13 is fixedly arranged on the supporting wall plate, and the winding portion 13 and the supporting wall plate surround the accommodating groove 14 , the strip-shaped recess 50 is provided on the outer wall of th...

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Abstract

The invention discloses an electronic module, which includes a winding frame, a chip and a coil. The winding frame is provided with an accommodating slot, and the chip is installed in the accommodating slot. The coil is wound on the winding frame, and the coil has The start part and the end part are respectively electrically connected to the chip, and at least one positioning mechanism for positioning the start part is provided on the outer wall of the winding frame. The electronic module determines the position of the starting part of the coil by setting a positioning mechanism, and changes the winding state of the coil by adjusting the position of the starting part of the coil on the corresponding positioning mechanism, thereby achieving precise adjustment of the resonant frequency of the coil.

Description

technical field [0001] The invention relates to an electronic module, in particular to an NFC electronic module. Background technique [0002] Usually, the data exchange system of wireless communication realizes data exchange by setting the resonant frequency of the antenna suitable for both communication parties. Among them, an example of mutual data exchange using antennas is an antenna coil for NFC. Generally, the antenna coils for NFC are mostly packaged in products such as cards. At this time, the resonant frequency set at the beginning may deviate from the resonant frequency due to packaging molding and cannot work normally. In addition, the frequency used for data exchange of NFC technology is sometimes not only a single frequency, but when multiple frequencies are used for data exchange, the frequency bandwidth of the antenna coil used will be increased as much as possible. The specific method is to adjust the floating capacitance of the antenna coil (such as the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q7/00H01Q1/14
CPCH04B5/72H04B5/24
Inventor 上田穗积万军
Owner SUMIDA CORP
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