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Etched capacitor laminate for reducing electrical noise

A technology for capacitors, electrical noise, applied in the field of etching capacitor stacks

Inactive Publication Date: 2007-11-28
WUS PRINTED CIRCUIT (KUNSHAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The edges of the internal capacitive planes are not terminated, EMI on the power and ground planes is not fully resolved by the capacitive planes

Method used

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  • Etched capacitor laminate for reducing electrical noise
  • Etched capacitor laminate for reducing electrical noise
  • Etched capacitor laminate for reducing electrical noise

Examples

Experimental program
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Embodiment Construction

[0025] In the following detailed description, reference is made to the accompanying drawings that provide exemplary embodiments of etching capacitor stacks and methods of forming etched capacitor stacks. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and structural, logical and electrical modifications may be made without departing from the spirit and scope of the claims. changes on . Accordingly, the following detailed description is non-limiting.

[0026] The etched capacitor stack described below reduces electrical noise in a printed circuit board (PCB) in a suitably designed pattern etched into one or more conductive layers. Typically, PCB construction includes etching features into a capacitor stack, such as clearance holes or other similar features. Any noise filtering effect these etched features may have is unintended and produces a li...

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PUM

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Abstract

An etched capacitor laminate for reducing electrical noise. The etched capacitor laminate is configured to be an element of a printed circuit board. The etched capacitor laminate comprises a first conductive sheet, an intermediate sheet of dielectric material, and a second conductive sheet. The first conductive sheet further comprises a plurality of etched forms wherein each of the etched forms is causing a local capacitive effect and a local inductive effect. The local capacitive effect and local inductive effect generates a plurality of local filters that reduce electrical noise. The intermediate sheet of dielectric material is bonded to the first conductive sheet, and the second conductive sheet is also bonded to the intermediate sheet.

Description

technical field [0001] The present invention relates to an etched capacitor stack that reduces electrical noise. In particular, it relates to an etched capacitor stack as a printed circuit board component. Background technique [0002] Electrical noise is generated and radiated by printed circuit boards (PCBs) and integrated circuits (ICs). A PCB is a stacked structure that houses a large number of electronic devices, such as integrated circuits (ICs). Typically, these printed circuit boards have internal power planes, ground planes, conductive layers, traces (TRACE) and various other electrical devices. In addition, electrical noise is also generated by other voltage fluctuations in PCBs and ICs, etc. [0003] Great effort has been put into the design of such PCBs and the devices arranged thereon to compensate for voltage fluctuations between the power and ground planes in the PCB. In particular, sensitive devices, such as ICs mounted and formed on the surface of a circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/16H05K3/06H01G4/30
CPCH05K2201/0969H05K1/0216H05K2201/09309H05K1/165H05K2201/1006H05K2201/093H05K1/162
Inventor 陈梅芳詹姆斯·罗伯特·霍华德
Owner WUS PRINTED CIRCUIT (KUNSHAN) CO LTD