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Self-decaying mlcc array

A pulse and trace technology, which is applied to fixed capacitance components, fixed capacitors, frequency response correction, etc., can solve problems such as noise generation, microphone noise not eliminated, microphone noise addition, etc.

Active Publication Date: 2022-05-03
KEMET ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although with some success, structural techniques designed to minimize the transfer of vibrational energy did not eliminate the generation of microphone noise, so the problem was not fully resolved
When multiple units are in phase, the microphone noise can add, or it can create harmonics, so even though the transfer is attenuated, there is still noise

Method used

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Embodiment Construction

[0029] The present invention relates to an improved array of MLCCs, and an electronic device comprising the array, wherein at least one MLCC is mounted to a substrate, and the MLCC has self-attenuating characteristics for microphone noise, wherein the MLCC has a first electrical phase A first capacitive electrode and a second capacitive electrode in a second electrical phase, wherein the first phase is sufficiently out of phase with the second phase to suppress and preferably cancel microphone noise through noise cancelation.

[0030] It is known in the art that MLCCs include capacitive couplings comprising a plurality of conductive layers with a dielectric between the plurality of conductive layers, wherein alternating layers are terminated to external terminations of opposite polarity. In one embodiment of the present invention, a self-attenuating MLCC includes a first capacitive couple and a second capacitive couple, wherein the first capacitive couple and the second capacit...

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Abstract

An electronic component having a self-decaying MLCC is provided. The electronic assembly includes: a pulse signal generator, and a substrate including a first trace and a second trace. An MLCC is provided comprising a first capacitive coupling between two first external terminals and a second capacitive coupling between two second external terminals, wherein each first external terminal is connected to a different The first traces are in electrical contact, and each second external terminal is in electrical contact with a different second trace. The signal generator provides a first pulse to a first trace and a second pulse to a second trace, wherein the first pulse and the second pulse are in different phases.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to co-pending US Provisional Patent Application No. 62 / 450,173, filed January 25, 2017, which is incorporated herein by reference. technical field [0003] The present invention relates to a multilayer ceramic capacitor (MLCC) mounted on a substrate, wherein the MLCC provides self-damping characteristics. More particularly, the present invention relates to an MLCC or MLCC array in a circuit, wherein the elements of the MLCC are out of electrical phase, thereby achieving attenuation of microphone noise. Background technique [0004] MLCCs fabricated with polarized dielectrics such as barium titanate are prone to microphone noise. Microphone noise is believed to be caused by electrostrictive and piezoelectric effects, which are related to the motion of the ceramic that occurs in the presence of an applied electric field. When an electric field is applied, the ceramic motion can be transf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/12H01G4/30H01G4/232H01G4/005H03K3/335
CPCH04R3/00H04R2410/03H01G2/065H01G4/012H01G4/12H01G4/232H01G4/30H01G4/38H04R3/04H01G4/228H01G4/1209
Inventor 兰道尔·J·瓦格翰阿比吉特·古拉夫格雷戈里·L·克罗斯比徐步力
Owner KEMET ELECTRONICS CORP
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