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    • 2. 发明申请
    • BENT FOLDED DIPOLE ANTENNA FOR REDUCING BEAM WIDTH DIFFERENCE
    • BENT折叠DIPOLE天线减少光束宽度差异
    • US20080074339A1
    • 2008-03-27
    • US11622847
    • 2007-01-12
    • Seung-Chul LeeJae-Sun JinMyung-Kuk Kim
    • Seung-Chul LeeJae-Sun JinMyung-Kuk Kim
    • H01Q9/26
    • H01Q9/26H01Q21/24H01Q21/26
    • The present invention relates to a bent folded dipole antenna for reducing a beam width difference, which can reduce a beam width difference, varying with a frequency band, and generate dual polarization through the use of an antenna structure having a bent folded dipole antenna unit, in which a plurality of bent folded dipole components is connected to each other as a single pattern, and a feeding unit for feeding a signal to the folded dipole antenna unit.Therefore, the present invention is advantageous in that it can reduce a beam width difference varying with a frequency band, simplify the structure of the antenna to reduce the cost thereof, and easily obtain dual polarization characteristics and wide band characteristics by combining a feeding unit for feeding a signal in a dual feeding manner with the bent folded dipole antenna unit implemented as a single pattern. In addition, the present invention is advantageous in that current flowing into the feed point of the feeding unit is induced only in folded dipole components without flowing into another feed point, thus realizing excellent isolation characteristics.
    • 本发明涉及一种用于减小波束宽度差的弯曲折叠偶极子天线,其可以减小随频带变化的波束宽度差,并且通过使用具有弯曲折叠偶极天线单元的天线结构产生双极化, 其中多个弯曲的折叠偶极组件作为单个图案彼此连接,以及用于将信号馈送到折叠偶极子天线单元的馈送单元。 因此,本发明的优点在于,可以减小随频带变化的波束宽度差,简化天线的结构以降低其成本,并且通过组合馈送单元可以容易地获得双极化特性和宽带特性 以双重馈电方式馈送信号,其中弯曲的折叠偶极子天线单元被实现为单一图案。 此外,本发明的优点在于,流入馈送单元的馈电点的电流仅在折叠偶极子部件中被感应而不流入另一馈电点,从而实现优异的隔离特性。
    • 4. 发明授权
    • Method for preparation of androst-4-ene-3,17-dione and androsta-1,4-diene-3,17-dione
    • 雄甾-4-烯-3,17-二酮和雄甾-1,4-二烯-3,17-二酮的制备方法
    • US07241589B2
    • 2007-07-10
    • US10477448
    • 2002-05-10
    • Seung-Kwon NohMyung-Kuk KimWon-Tae YoonKyung-Moon ParkSang-Ok Park
    • Seung-Kwon NohMyung-Kuk KimWon-Tae YoonKyung-Moon ParkSang-Ok Park
    • C12P33/00
    • C12P33/16
    • The present invention relates to a method for preparation of androst-4-ene-3,17-dione (AD) and androsta-1,4-diene-3,17-dione (ADD). More particularly, the present invention relates to a method for preparing AD/ADD, comprising the steps of: (a) heating sterols and emulsifier respectively, to dissolve completely and mixing to prepare a mixture; (b) placing the mixture in a water bath at 70˜90° C. and stirring to obtain emulsified sterols; and (c) adding the emulsified sterols to culture media of microorganism as a component. And the present invention relates to a method for preparing AD/ADD, comprising the addition of cyclodextrin-sterol complexes extracted from milk to culture media of microorganism as a component. The emulsified sterols and cyclodextrin-sterol complexes adopted in the present invention can be easily prepared and be effectively used for obtaining AD/ADD at a high yield.
    • 雄甾-4-烯-3,17-二酮(AD)和雄甾-1,4-二烯-3,17-二酮(ADD)的制备方法技术领域本发明涉及雄甾-4-烯-3,17-二酮(AD)和雄甾-1,4-二烯-3,17-二酮(ADD)的制备方法。 更具体地说,本发明涉及一种制备AD / ADD的方法,包括以下步骤:(a)分别加热固醇和乳化剂以完全溶解并混合以制备混合物; (b)将混合物置于70〜90℃的水浴中并搅拌,得到乳化甾醇; 和(c)将乳化的甾醇加入作为组分的微生物培养基中。 本发明涉及AD / ADD的制备方法,其特征在于,将从乳中提取的环糊精 - 甾醇配合物添加到微生物的培养基中作为成分。 本发明中采用的乳化甾醇和环糊精 - 固醇配合物可以容易地制备并且有效地用于以高产率获得AD / ADD。