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Low equivalent series resistance RF filter for an AIMD
专利权人:
Greatbatch Ltd.
发明人:
Robert A. Stevenson,Robert Shawn Johnson,Warren S. Dabney,Thomas Marzano,Richard L. Brendel,Christopher Michael Williams,Holly Noelle Moschiano,Keith W. Seitz,John E. Roberts
申请号:
US15704657
公开号:
US10092749B2
申请日:
2017.09.14
申请国别(地区):
US
年份:
2018
代理人:
摘要:
An AIMD includes a conductive housing, an electrically conductive ferrule with an insulator hermetically sealing the ferrule opening. A conductive pathway is hermetically sealed and disposed through the insulator. A filter capacitor is disposed on a circuit board within the housing and has a dielectric body supporting at least two active and two ground electrode plates interleaved, wherein the at least two active electrode plates are electrically connected to the conductive pathway on the device side, and the at least two ground electrode plates are electrically coupled to either the ferrule and/or the conductive housing. The dielectric body has a dielectric constant less than 1000 and a capacitance of between 10 and 20,000 picofarads. The filter capacitor is configured for EMI filtering of MRI high RF pulsed power by a low ESR, wherein the ESR of the filter capacitor at an MRI RF pulsed frequency or range of frequencies is less than 2.0 ohms.
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中国工程科技知识中心
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