Shielded multi-stage EMI noise filter

Title: Shielded multi-stage EMI noise filter

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Abstract

Electromagnetic interference (EMI) noise filter embodiments and methods for filtering are provided herein. EMI noise filters include multiple signal exclusion enclosures. The multiple signal exclusion enclosures contain filter circuit stages. The signal exclusion enclosures can attenuate noise generated external to the enclosures and/or isolate noise currents generated by the corresponding filter circuits within the enclosures. In certain embodiments, an output of one filter circuit stage is connected to an input of the next filter circuit stage. The multiple signal exclusion enclosures can be chambers formed using conductive partitions to divide an outer signal exclusion enclosure. EMI noise filters can also include mechanisms to maintain the components of the filter circuit stages at a consistent temperature. For example, a metal base plate can distribute heat among filter components, and an insulating material can be positioned inside signal exclusion enclosures.

Inventors:: Kisner, Roger Allen; Fugate, David Lee

Issue Date:: 2016-11-08

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1331155

Patent Number(s):: 9490766

Application Number:: 14/180,119

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):: H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03H - IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05K - PRINTED CIRCUITS

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H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03H - IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
H03H2001/0021 - {Constructional details}

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05K - PRINTED CIRCUITS
H05K1/0209 - {External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings}
H05K2201/09972 - Partitioned, e.g. portions of a PCB dedicated to different functions
H05K1/0233 - {Filters, inductors or a magnetic substance}
H05K3/0061 - {onto a metallic substrate, e.g. a heat sink
H05K2201/10219 - Thermoelectric component

H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03H - IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
H03H7/0115 - {comprising only inductors and capacitors
H03H1/0007 - {of radio frequency interference filters}
H03H2001/0028 - {RFI filters with housing divided in two bodies}

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05K - PRINTED CIRCUITS
H05K2201/1006 - Non-printed filter

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DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Feb 13

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Kisner, Roger Allen, and Fugate, David Lee. Shielded multi-stage EMI noise filter.  United States: N. p., 2016. 
        Web.

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                    Kisner, Roger Allen, & Fugate, David Lee. Shielded multi-stage EMI noise filter.  United States.

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                    Kisner, Roger Allen, and Fugate, David Lee. Tue .  
        "Shielded multi-stage EMI noise filter".  United States.  https://www.osti.gov/servlets/purl/1331155.

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@article{osti_1331155,

  title        = {Shielded multi-stage EMI noise filter},

  author       = {Kisner, Roger Allen and Fugate, David Lee},

  abstractNote = {Electromagnetic interference (EMI) noise filter embodiments and methods for filtering are provided herein. EMI noise filters include multiple signal exclusion enclosures. The multiple signal exclusion enclosures contain filter circuit stages. The signal exclusion enclosures can attenuate noise generated external to the enclosures and/or isolate noise currents generated by the corresponding filter circuits within the enclosures. In certain embodiments, an output of one filter circuit stage is connected to an input of the next filter circuit stage. The multiple signal exclusion enclosures can be chambers formed using conductive partitions to divide an outer signal exclusion enclosure. EMI noise filters can also include mechanisms to maintain the components of the filter circuit stages at a consistent temperature. For example, a metal base plate can distribute heat among filter components, and an insulating material can be positioned inside signal exclusion enclosures.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {11}

}

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