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    고주파대역 이엠아이(EMI) 노이즈 파이(Pi)필터
    51.
    发明授权
    고주파대역 이엠아이(EMI) 노이즈 파이(Pi)필터 失效
    高频带EMI噪声滤波器

    公开(公告)号：KR1019950003714B1

    公开(公告)日：1995-04-17

    申请号：KR1019930002201

    申请日：1993-02-17

    Applicant: 한국과학기술연구원

    Inventor： 김경용 ,  김왕섭 ,  이창호 ,  장광호

    IPC: H03H9/46

    Abstract: The cut-off frequenwithout degrading of the Pi filter is adjusted by altering the composition ratio of a ferrite and the diaelectric ratio of a diaelectric paste without degrading the impedance and loss character istics at high frequency range. The high loss ferrite (2) with length of 10 mm, inner diameter of 1.02 mm, and outer diameter of 2.34 mm is formed to outer of lead wire (1) and a diaelectric part (4) is formed to outer of the ferrite. A silver electrode is formed around the of the diaelectric part (4) and a soldering unit (5) is formed at the both ends of the filter. The ferrite composed of (Fe2O3)×(NiO)y (ZnO)w (CuO)z where x=49, y=9˜25, w=20˜35, and z=5,7 mol.%. is cofired under 900-950 deg.C..

    Abstract translation: 通过改变铁素体的组成比和直径电浆糊的直径比来调节Pi滤波器的频率不降低的截止频率，而不会降低高频范围的阻抗和损耗特性。 在引线（1）的外部形成长度为10mm，内径为1.02mm，外径为2.34mm的高损耗铁氧体（2），并且在铁素体的外部形成电路体（4）。 在电气部件（4）的周围形成有银电极，并且在过滤器的两端形成焊接单元（5）。 由（Fe 2 O 3）×（NiO）y（ZnO）w（CuO）z组成的铁氧体，其中x = 49，y = 9〜25，w = 20〜35，z = 5,7摩尔％。 在900-950摄氏度下共烧

    고주파 인덕터용 자심재료
    53.
    发明授权
    고주파 인덕터용 자심재료 失效
    高频电感的核心材料

    公开(公告)号：KR1019940011693B1

    公开(公告)日：1994-12-23

    申请号：KR1019920017340

    申请日：1992-09-23

    Applicant: 한국과학기술연구원

    Inventor： 김경용 ,  장광호 ,  이종규 ,  김왕섭

    IPC: H01F1/00

    Abstract: The method is to manufacture a high frequency inductant core material which can be sintered at a low temperture. The core material includes Fe2O3 47.5-51.5 mole%, CuO 5-15 mole%, NiO 15-35 mole%, ZnO 5.5-25.5 mole% with Co2O3 0.01-3 wt.% or WO3 0.01-1 wt.% addition. The core material is manufactured by sintering the powders at 900-950 deg.C.

    Abstract translation: 该方法是制造可在低温下烧结的高频感应芯材料。 核心材料包括Fe2O3 47.5-51.5摩尔％，CuO 5-15摩尔％，NiO 15-35摩尔％，ZnO 5.5-25.5摩尔％，Co 2 O 3 0.01-3重量％或WO 3 0.01-1重量％添加。 核心材料通过在900-950℃下烧结粉末制造。

    광대역 전파흡수체
    55.
    发明授权
    광대역 전파흡수체 失效
    宽带无线电波吸收器

    公开(公告)号：KR1019930011549B1

    公开(公告)日：1993-12-10

    申请号：KR1019910013922

    申请日：1991-08-13

    Applicant: 한국과학기술연구원

    Inventor： 김경용 ,  김왕섭 ,  정형진 ,  주윤돈

    IPC: H01Q17/00

    Abstract: The radio-absorptive material used as an outer tile of building is manufactured by adding the calcinated CuO and Fe2O3 powders to a ferrite powders calcinated at 900 deg.C for 1 hour, and sintering at 1,200 deg.C for 1 hour in an air or under N2 gas atmosphere. The sintered body shows a fine structure according as the liquid phase of CuO-Fe2O3 with radio-absorptive property is present in grain boundary of ferrite.

    Abstract translation: 用作建筑外砖的放射性吸收材料是通过将煅烧后的CuO和Fe2O3粉末加入到在900℃煅烧1小时的铁氧体粉末中，并在空气中在1,200℃下烧结1小时来制造的。 在N2气氛下。 该烧结体根据CuO-Fe 2 O 3的液相具有精细的结构，其放射性吸收性存在于铁素体的晶界。

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