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专利名称：High frequency wave absorbing ceramics发明人：Nobuyuki Ohya,Toshiki Saburi,Toru
Yamazaki,Taisei Katoh
申请号：US06/837404申请日：19860307公开号：US04742031A公开日：19880503
摘要：A high frequency wave absorbing ceramics can be used, for example, as an EMIpreventive filter for interrupting high frequency waves intruding into electronic circuits.The high frequency wave absorbing ceramics has a composition expressed by the
chemical formula Pb{Fe.sub.1/2 Nb.sub.(1/2- x) Ta.sub.x }O.sub.3 where 0.1 < x < 0. 35. Thehigh frequency wave absorbing ceramics may be composed of a composition comprisingfrom 30 to 80 mol % of lead iron niobate Pb(Fe.sub. 1/2 Ta.sub.1/2)O.sub.3 based on thetotal 100 mol % of a Pb(Fe.sub.1/2 Nb. sub.1/2)O.sub.3 and from 20 to 70 mol % of leadiron tantalate composition composed of lead iron niobate Pb(Fe.sub.1/2Nb.sub.1/2)O.sub. 3 and lead iron tantalate Pb(Fe.sub.1/2 Ta. sub.1/2)O.sub.3.
申请人：NIPPONDENSO CO., LTD.
代理机构：Cushman, Darby & Cushman
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