Multilayer chip emi filter
A filter and chip technology, applied in impedance networks, electrical components, single-ended-pair networks, etc., can solve the problems of no shielding, large size, and inability to meet the good characteristics of medium and high frequencies at the same time, and achieve the medium frequency insertion loss and High-frequency insertion loss, ensuring the effect of miniaturization
Active Publication Date: 2017-06-27
SHENZHEN ZHENHUA FU ELECTRONICS
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Problems solved by technology
[0006] The purpose of the present invention is to provide a laminated chip EMI filter, which aims to solve the problem that the chip EMI filter in the prior art is too large, has no shielding characteristics, and cannot satisfy the better characteristics of medium and high frequencies at the same time
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[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0014] Such as Figure 1~4 Shown is a preferred embodiment provided by the present invention.
[0015] Such as figure 1 As shown, the multilayer chip EMI filter 1 in the present invention includes a structural body, the structural body includes multiple layers of electronic components stacked in sequence, and the multi-layer electronic components include a first electronic component that is electrically connected to an external input line. A ferrite inductor 12, a first ceramic inductor 13, a ceramic capacitor 14 connected to an external ground wire, a second ceramic inductor 15, and a second fer...
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The invention relates to the technical field of filters, and discloses a laminated chip EMI filter, which includes a structural body, the structural body includes multiple layers of sequentially stacked electronic components, and the multi-layer electronic components include electrical components that are electrically connected to external input lines. The connected first ferrite inductor, the first ceramic inductor, the ceramic capacitor, the second ceramic inductor and the second ferrite inductor electrically connected to the external output line, the ceramic capacitor includes the first capacitor electrode and the external ground The second capacitor electrode electrically connected with the wire, the first ferrite inductor, the first ceramic inductor, the first capacitor electrode, the second ceramic inductor and the second ferrite inductor are electrically connected in series in sequence, and the structural body A ferrite upper cover and a ferrite lower cover are respectively stacked on the upper and lower ends of the ferrite. The multilayer chip EMI filter in the present invention is provided with two sets of ferrite inductors for loss of intermediate frequency signal noise, and an LC circuit composed of two sets of ceramic inductors and ceramic capacitors for loss of high frequency signal noise. On the basis of , it can meet the insertion loss requirements of intermediate frequency and high frequency.
Description
technical field [0001] The invention relates to the technical field of EMI filters, in particular to a laminated chip EMI filter. Background technique [0002] With the development of electronic technology, more and more electronic devices appear in the environment of people's life and production. A large number of electronic devices will generate high-density, wide-spectrum electromagnetic signals during work, forming a complex electromagnetic environment. The complex electromagnetic environment requires electronic equipment and power supplies to have higher electromagnetic compatibility, so more and more attention has been paid to the technology of suppressing electromagnetic interference. [0003] Chip EMI filter is a combined component commonly used to suppress electromagnetic noise. It can effectively shield electromagnetic interference, improve the anti-interference ability and system reliability of electronic equipment. [0004] The chip EMI filter in the prior art...
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IPC IPC(8): H03H5/00
Inventor 马国超刘季超李建辉樊应县张华良税莎王智会
Owner SHENZHEN ZHENHUA FU ELECTRONICS