Filter with coating layer and shielding layer

JP7884460B2Inactive Publication Date: 2026-07-03KYOCERA AVX COMPONENTS CORP
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Patent Information

Application Number
JP2022568932
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-05-13
Filing Date
2021-05-04
Publication Date
2026-07-03
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Passive filter devices are susceptible to electromagnetic interference, which can adversely affect their performance.

Method used

A filter design incorporating a monolithic substrate with conductive layers, a coating layer, and a shielding layer to provide electromagnetic shielding, with specific dimensions and materials to enhance performance characteristics.

Benefits of technology

The filter exhibits improved performance with a narrow bandpass frequency range and excellent out-of-band rejection, including insertion loss responses greater than 10 dB per GHz, and is suitable for frequencies above 10 GHz.

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Patent Text Reader

Abstract

The filter may include a monolithic substrate and at least one conductive layer formed above a top surface of the monolithic substrate and along at least a portion of one or more of a first top edge of the monolithic substrate or a second top edge of the monolithic substrate. A cover layer may be disposed above the top surface of the monolithic substrate. A shielding layer may connect to one or more of the conductive layers at the first top edge or the second top edge of the monolithic substrate. The shielding layer may include a first portion formed above a first side surface of the cover layer, a second portion formed above the top surface of the cover layer, and a third portion formed above the second side surface of the cover layer.
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Citation Information

Patent Citations

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  • Surface mounting type strip line resonator

    JP1990284501A

  • Layered type dielectric filter

    JP1995058508A

  • Production of laminated dielectric filter

    JP1997130111A