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    • 1. 发明授权
    • Method and apparatus for orientating ferrimagnetic bodies
    • 用于定向亚铁磁体的方法和装置
    • US4575695A
    • 1986-03-11
    • US446533
    • 1982-12-03
    • Ernst F. R. A. Schloemann
    • Ernst F. R. A. Schloemann
    • H01P1/218H01P1/30H01P1/32
    • H01P1/218
    • An apparatus and method for selectively orientating a ferrimagnetic body along a selected temperature invariant crystallographic axis includes a first pair of coils disposed for producing a magnetic field along a first direction, and a second pair of coils disposed within the first pair of coils for producing a magnetic field along a second direction, the direction of such second field being displaced at a predetermined angle .theta., with respect to the direction of said first field. A platform upon which the ferrimagnetic body is supported is disposed at an intersection of such fields and has a surface disposed at a predetermined direction with respect to a horizontal plane. A series of alternate pulsed magnetic fields is generated in turn by each pair of coils and the body rotates in response to each one of such fields. After pulsed fields have been generated, the so-called "easy axis" of the crystallographic structure of the body is aligned with the axis of the coils. A suitable member is then attached to said body at a predetermined bias direction determined by the directional displacement of an upper portion of the platform. Thus, the rotation of the ferrimagnetic body by the magnetic fields in combination with the calibrated attachment of the member to the ferrimagnetic body at the predetermined bias angle provides a ferrimagnetic body orientated along a temperature invarient crystallographic axis.
    • 一种用于沿着所选择的温度不变的结晶轴选择性地定向亚铁磁体的装置和方法包括设置成沿着第一方向产生磁场的第一对线圈和设置在第一对线圈内的第二对线圈,用于产生 沿着第二方向的磁场,这样的第二场的方向相对于所述第一场的方向以预定角度θ位移。 铁氧体被支撑在其上的平台设置在这种场的相交处,并且具有相对于水平面设置在预定方向的表面。 一系列交替的脉冲磁场依次由每对线圈产生,并且主体响应于这些场中的每一个而旋转。 在产生脉冲场之后,主体的结晶结构的所谓“易轴”与线圈的轴线对准。 然后将合适的构件以由平台的上部的方向位移确定的预定偏置方向附接到所述主体。 因此,通过磁场将铁氧体的旋转与该构件的校准连接以预定的偏压角度向铁磁体的安装结合,提供了沿温度不变的晶体轴定向的铁磁体。
    • 2. 发明授权
    • Multicolor magnetographic printing system
    • 多色磁印印刷系统
    • US3965478A
    • 1976-06-22
    • US530627
    • 1974-12-09
    • Ernst F. R. A. Schloemann
    • Ernst F. R. A. Schloemann
    • G03G19/00G01D15/12G01D15/20
    • G03G19/00
    • A multicolor magnetographic printing system wherein a magnetizable surface is recorded upon with a different recording wavelength for each color to be printed. Toner is supplied which includes a mixture of different types of particles, each having a different color. The differently colored particles each maximally adhere only to areas on the surface recorded at a wavelength specific for the particular particle type. The toner particles are varied in magnetic susceptibility as well as linear dimensions so as to adjust their maximum adherence for the particularly matched wavelength. Such a system may further include an image enhancement system to ensure that the proper toner particles are concentrated in the appropriate areas. The toner is transferred to a paper surface by both preheating the paper before transfer and heating it afterwards to fix the toner onto the paper surface.
    • 一种多色磁光印刷系统,其中以可印刷的每种颜色对不同的记录波长记录可磁化表面。 提供调色剂,其包括不同类型的颗粒的混合物,每种颗粒具有不同的颜色。 不同颜色的颗粒每个最大程度地仅粘附在以特定颗粒类型为特定波长记录的表面上的区域。 调色剂颗粒在磁化率以及线性尺寸方面是变化的,以便调整它们对于特别匹配的波长的最大粘着度。 这样的系统可以进一步包括图像增强系统,以确保适当的调色剂颗粒集中在适当的区域中。 通过在转印之前预热纸张并将其加热之后将调色剂转印到纸张表面以将调色剂固定在纸张表面上。
    • 3. 发明授权
    • Broad-band non-reciprocal microwave devices
    • 宽带非互惠微波设备
    • US4789844A
    • 1988-12-06
    • US56938
    • 1987-05-29
    • Ernst F. R. A. Schloemann
    • Ernst F. R. A. Schloemann
    • H01P1/387
    • H01P1/387
    • A stripline circulator includes a pair of dielectrically supported ferrite discs and a pair of spaced hemispherical ferrite caps each one disposed over a corresponding one of the ferrite discs. The ferrite caps provide in combination with the ferrite discs a uniform DC magnetic field within the ferrite discs to reduce the insertion loss of the circulator at frequencies less than the so-called magnetization frequency of the ferrite material and thus, extend the operating bandwidth of the circulator. The ferrite caps are spaced from the ferrite discs by a thin layer of metallization having a thickness larger than the skin depth thickness of a microwave signal over the desired microwave frequency band. The ferrite discs are preferably comprised of signal crystalline ferrite materials oriented in a hard-axis orientation which generally is the [100] direction for materials where the first order anisotropic constant K.sub.1 is negative.
    • 带状线环行器包括一对介电支撑的铁氧体磁盘和一对间隔开的半球形铁氧体磁头盖,每个铁氧体磁体盖都设置在相应的铁氧体磁盘之间。 铁氧体盖与铁氧体磁盘组合在铁氧体磁盘内提供均匀的直流磁场,以减小循环器在低于所谓的铁氧体材料的所谓磁化频率的频率下的插入损耗,从而延长了铁氧体磁芯的工作带宽 循环器 铁氧体盖与铁氧体磁盘隔开一薄层金属化,其厚度大于所需微波频带上微波信号的趋肤深度厚度。 铁氧体磁盘优选地由以一维各向异性常数K1为负的材料沿硬轴方向取向的信号晶体铁氧体材料构成,其通常为[100]方向。
    • 4. 发明授权
    • Magnetically tuned resonant circuit
    • 磁调谐谐振电路
    • US4543543A
    • 1985-09-24
    • US446531
    • 1982-12-03
    • Ronald E. BlightErnst F. R. A. Schloemann
    • Ronald E. BlightErnst F. R. A. Schloemann
    • H01P1/218H01P1/32H01P7/08
    • H01P1/218
    • A magnetically tuned resonant circuit for selectively coupling radio frequency (r.f.) energy between an input coupling circuit and an output coupling circuit through a resonant body disposed between such coupling circuits. Each coupling circuit includes a plurality of spaced conductors which are arranged to selectively spatially distribute r.f. energy fed thereto in order to provide, in the region where the resonant body is disposed, a magnetic field having a predetermined spatial distribution. Such magnetic field distribution is selected in accordance with characteristics of the resonant body to reduce coupling of unwanted spurious r.f. energy through the magnetically tuned resonant circuit.Further, a ground plane conductor associated with such coupling circuits has a selected portion thereof removed to provide a void therein, and a portion of the resonant body is disposed within the void provided in the ground plane. The size of the void is selected to increase coupling of r.f. energy through the resonant body, between the input and the output coupling circuits and to reduce coupling of r.f. energy between the body and the ground plane conductor and hence the r.f. energy loss concomitant therewith, without substantially affecting the desired coupling between the coupling circuits.
    • 一种用于通过布置在这种耦合电路之间的谐振体选择性地将输入耦合电路和输出耦合电路之间的射频(r.f.)能量耦合的磁调谐谐振电路。 每个耦合电路包括多个间隔开的导体,其布置成选择性地空间分布r.f. 为了在设置谐振体的区域中提供具有预定空间分布的磁场,能量被馈送到其中。 根据谐振体的特性选择这种磁场分布,以减少不期望的杂散r.f的耦合。 能量通过磁调谐谐振电路。 此外,与这种耦合电路相关联的接地平面导体具有被选择的部分被移除以在其中提供空隙,并且谐振体的一部分设置在设置在接地平面中的空隙内。 选择空隙的大小以增加r.f的耦合。 能量通过谐振体,在输入和输出耦合电路之间,并减少r.f的耦合。 身体和地平面导体之间的能量,因此r.f. 能量损失伴随着,而基本上不影响耦合电路之间的期望的耦合。
    • 5. 发明授权
    • Tuned resonant circuit utilizing a ferromagnetically coupled interstage
line
    • 利用铁磁耦合级间线调谐谐振电路
    • US4521753A
    • 1985-06-04
    • US446532
    • 1982-12-03
    • Ernst F. R. A. Schloemann
    • Ernst F. R. A. Schloemann
    • H01P1/218H01P1/203
    • H01P1/218
    • A magnetically tuned resonant circuit for selectively coupling radio frequency (r.f.) energy between an input coupling circuit and an output coupling circuit, dielectrically spaced from the input coupling circuit, through a resonant body disposed therebetween. Each coupling circuit includes a center strip conductor portion dielectrically spaced from a ground plane conductor. Such center strip conductor and ground plane conductor of each coupling circuit are formed on a common surface of a corresponding dielectric. The center strip conductor portions are orthogonally orientated, and have first end portions which are coaxially aligned and terminated with the ground plane. The resonant body is dielectrically supported between each one of such first end portions of such center conductors.
    • 一种用于在输入耦合电路和输出耦合电路之间选择性地耦合射频(r.f)能量的磁调谐谐振电路,其通过设置在它们之间的谐振体介入地与输入耦合电路间隔开。 每个耦合电路包括与接地平面导体介电间隔开的中心条状导体部分。 每个耦合电路的这种中心带导体和接地平面导体形成在相应电介质的公共表面上。 中心带状导体部分是正交取向的,并且具有与接地平面同轴对齐并终止的第一端部。 谐振体被介电地支撑在这种中心导体的这些第一端部的每一个之间。
    • 6. 发明授权
    • Isolator for a broad frequency band with at least two magnetic materials
    • 隔离器用于具有至少两种磁性材料的宽频带
    • US06507249B1
    • 2003-01-14
    • US09388336
    • 1999-09-01
    • Ernst F. R. A. Schloemann
    • Ernst F. R. A. Schloemann
    • H01P1387
    • H01P1/32
    • The performance of broadband isolators and circulators can be characterized by the ratio fmax/fmin, where fmin and fmax are defined as the edges of the frequency band in which the devices have acceptable operating characteristics. For the most advanced isolators and circulators available today this ratio is approximately 3:1. This invention teaches how to improve broadband performance substantially. The present limitations are shown to be primarily due to two causes: 1.) lack of bias field homogeneity, and 2.) previously unrecognized low-field loss due to excitation of magnetostatic surface waves. These surface waves are excited at the dielectric/ferrite interfaces on the side faces of the ferrite platelets or discs in the devices. For stripline edge-mode isolators and stripline circulators, the undesired low-field loss can be reduced by using certain rf device structures in combination with suitable bias magnets. These rf structures have a high-magnetization ferrite in the center region and lower-magnetization ferrites in the peripheral regions of the device. The bias magnets generally include high-permeability pole pieces, either in close proximity to the rf structure, or separated from it by composite pole shoes containing the same magnetic microwave materials inserted into the rf structure. It is estimated that fmax/fmin ratios of about 6:1 are possible for properly designed devices using two microwave ferrites, whose saturation magnetizations are in the ratio of 2:1. Higher values of the fmax/fmin ratio are possible when more than two microwave ferrites are used.
    • 宽带隔离器和循环器的性能可以通过fmax / fmin比来表征,其中fmin和fmax被定义为器件具有可接受的工作特性的频带的边缘。 对于目前最先进的隔离器和循环器,此比例约为3:1。 本发明教导如何大幅提高宽带性能。 目前的局限性显示主要是由于两个原因:1)缺乏偏置​​场均匀性,以及2)由于静磁表面波的激发而导致的以前无法识别的低场损耗。 这些表面波在器件中的铁氧体薄片或圆盘的侧面上的电介质/铁氧体界面处被激发。 对于带状线边缘模式隔离器和带状线环行器,可以通过使用某些rf器件结构与合适的偏置磁体组合来减少不希望的低场损耗。 这些rf结构在中心区域具有高磁化铁素体,在器件的外围区域具有较低磁化铁氧体。 偏置磁体通常包括非常接近rf结构的高磁导率极片,或与包含插入到rf结构中的相同磁微波材料的复合极靴分离。 对于使用两个微波铁氧体的适当设计的装置,其饱和磁化比例为2:1,估计为6:1左右的fmax / fmin比是可能的。 当使用两个以上的微波铁氧体时,较高的fmax / fmin比值是可能的。
    • 9. 发明授权
    • Miniature circulators for monolithic microwave integrated circuits
    • 用于单片微波集成电路的微型循环器
    • US4920323A
    • 1990-04-24
    • US289895
    • 1988-12-27
    • Ernst F. R. A. SchloemannRonald E. BlightRobert L. Mozzi
    • Ernst F. R. A. SchloemannRonald E. BlightRobert L. Mozzi
    • H01P1/383
    • H01P1/383
    • A miniature circulator which is compatible with integrated circuits is described. The circulator includes a substrate which supports three copolanar waveguide transmission lines which are connected at a common junction. The common junction provides a coupling structure between the coplanar waveguide transmission lines. A ferrite disc having a conductive layer disposed thereover is provided over the intersection of the three coplanar waveguide transmission lines. A magnet is then disposed over the ferrite disc to direct a D.C. magnetic field through the disc. An alternative coupling structure having interwoven, balanced lines disposed on the substrate is also described. An alternative arrangement for the ferrite disc having a hexangular shape, which carries a beam-lead node metalization is also described.
    • 描述了与集成电路兼容的微型循环器。 循环器包括支撑在公共接头处连接的三个波导管传输线的基板。 公共端在共面波导传输线之间提供耦合结构。 在三个共面波导传输线的交叉点上设置有设置在其上的导电层的铁氧体磁盘。 然后将磁体设置在铁氧体磁盘上以引导直流磁场穿过该磁盘。 还描述了具有布置在基板上的交织的平衡线的替代耦合结构。 还描述了具有六边形铁氧体磁盘的替代布置,该铁心盘带有光束引线节点金属化。
    • 10. 发明授权
    • Miniature circulator for monolithic microwave integrated circuits
    • 微型循环器用于单片微波集成电路
    • US4904965A
    • 1990-02-27
    • US289879
    • 1988-12-27
    • Ronald F. BlightRobert L. MozziErnst F. R. A. Schloemann
    • Ronald F. BlightRobert L. MozziErnst F. R. A. Schloemann
    • H01P1/387
    • H01P1/387
    • A miniature circulator which is microwave integrated circuit compatible and based on microstrip transmission techniques is described. The circulator includes a dielectric or semiconductor substrate having microstrip transmission lines formed thereon and a patterned metalization formed as the node metalization for the circulator. The substrate may carry other circuits such as power combiners, amplifiers, and switches. The substrate further includes monolithic capacitors over the substrate at the center of the circulator in a first embodiment or disposed along the periphery of the patterned metalization in the second embodiment. The capacitors are used to capacitively couple the patterned metalization or node metalization to the ground plane conductor. The value of capacitance is selected to provide value broadband performance. A ferrite disc, preferably hexagonal in shape, is disposed over the substrate and has disposed thereon a coupling structure, preferably an interwoven coupling structure comprised of two layers of metalization separated by an intermediate layer of insulating material. Preferred techniques for providing said coupling structure are described.
    • 描述了微波循环器,其是微波集成电路兼容并基于微带传输技术。 环行器包括其上形成有微带传输线的电介质或半导体衬底,以及形成为循环器的节点金属化的图案化金属化。 衬底可以承载诸如功率组合器,放大器和开关的其它电路。 衬底还包括在第一实施例中在循环器的中心处的衬底上的单片电容器,或者沿着第二实施例中的图案化金属化的外围设置。 电容器用于将图案化金属化或节点金属化电容耦合到接地平面导体。 选择电容值以提供价值的宽带性能。 优选为六边形的铁氧体磁盘设置在衬底之上,并且在其上设置有耦合结构,优选地由包括由绝缘材料的中间层隔开的两层金属化构成的交织耦合结构。 描述了用于提供所述耦合结构的优选技术。