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Wideband common-mode filtering apparatus

A common-mode filtering and common-mode filter technology, which is applied in the direction of impedance network, electrical components, multi-terminal pair network, etc., can solve the problems of increasing the internal space of mobile phones and the inability to use mobile phones across borders.

Inactive Publication Date: 2015-09-02
INPAQ TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the known common-mode filter is manufactured, its filtering frequency band has been determined and cannot be expanded; if there is a demand for a new filtering frequency band, it must be redesigned and manufactured to meet the new demand
[0004] In addition, since 4G communication (LTE) uses different frequency bands in different countries, common-mode filters must provide wide-band signal processing capabilities, otherwise mobile phones may not be able to be used across borders; another solution is to use multiple sets of common-mode filters for mobile phones, but its The disadvantage is that multiple sets of common-mode filters take up more internal space in the phone

Method used

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  • Wideband common-mode filtering apparatus

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Embodiment Construction

[0040] In order to enable those skilled in the art to fully understand the present invention, detailed steps and structures will be presented in the following description. Obviously, the implementation of the invention is not limited to specific details familiar to those of ordinary skill in the relevant art. In other instances, well-known structures or steps are not described in detail in order to avoid unnecessarily limiting the invention. The preferred embodiments of the present invention will be described in detail as follows, but in addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, and the scope of the present invention is not limited, it is based on the appended claims .

[0041] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. The "embodiment", "this embodiment", "other embodiment" and so on mentioned in the description mean t...

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Abstract

The invention discloses a wideband common-mode filtering apparatus. In one embodiment, the apparatus comprises a first common mode filter having a first filtering frequency band; a second common mode filter having a second filtering frequency band different from the first filtering frequency band; and a switching element configured to electrically connect the output end of the first common mode filter to the input end or output end of the second common mode filter. In another embodiment, the wideband common-mode filtering apparatus comprises a first common mode filter having a first filtering frequency band; a second common mode filter having a second filtering frequency band different from the first filtering frequency band; a third common mode filter having a third filtering frequency band different from the first filtering frequency band and the second filtering frequency band; and a switching element configured to electrically connect the output end of the first common mode filter to the input end of the second common mode filter or the input end of the third common mode filter.

Description

technical field [0001] The invention discloses a broadband common-mode filter device, in particular to a broadband common-mode filter device that uses switching elements to connect multiple common-mode filters in series. Background technique [0002] In the development of network communication and digital data transmission, with the continuous improvement of signal transmission rate, differential signal transmission (Differential Transmission) method has been applied to transmission specifications in many industries; for example, Universal Serial Bus (Universal Serial Bus, USB ), IEEE-1394 interface standard, low-voltage differential signaling (LVDS), digital visual interface (Digital Visual Interface, DVI), high-resolution multimedia interface (High-Definition Multimedia Interface, HDMI), mobile industry processing Processor Interface (Mobile Industry Processor Interface, MIPI). [0003] Common mode noise is noise that is conducted in the same direction on all wires. To s...

Claims

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Application Information

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IPC IPC(8): H03H7/01
Inventor 张育嘉张怀禄陈韦铨
Owner INPAQ TECH
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