Paramagnetic sample arrangement for ECM false echo generation
    1.
    发明授权
    Paramagnetic sample arrangement for ECM false echo generation 失效
    用于ECM假回波产生的顺磁性样本排列

    公开(公告)号:US3866225A

    公开(公告)日:1975-02-11

    申请号:US36691473

    申请日:1973-06-04

    Inventor: BUCK DANIEL C

    CPC classification number: H04K3/65 G01S7/38 G01S13/767 H04K3/68 H04K2203/14

    Abstract: An arrangement for generating false echoes for ECM is characterized by providing identical magnetic environments for two paramagnetic samples for spin echo delay lines at microwave frequencies. A static magnetic field is formed by parallel faces of spaced-apart pole pieces having received therebetween two separate and independent waveguides. The two waveguides are arranged such that a common wall between them lies in the center plane of mirror symmetry of the magnetic field. A paramagnetic sample is disposed in each waveguide between the pole pieces such that the magnetic field distribution across the samples is substantially uniform but provides sufficient bandwidth for producing spin echoes of input microwave pulses. Circuitry is disclosed for directing an input pulse to one of the paramagnetic samples from which, at a time later, an echo is recalled and forms an input pulse to the second paramagnetic sample. A false echo is then provided by recalling the input pulse to the second paramagnetic sample at a selected time later.

    Abstract translation: 用于产生ECM的假回波的装置的特征在于为微波频率处的自旋回波延迟线的两个顺磁性样品提供相同的磁环境。 静态磁场由间隔开的极片的平行面形成,其间接收有两个独立且独立的波导。 两个波导被布置成使得它们之间的公共壁位于磁场的镜对称的中心平面中。 在磁极片之间的每个波导中设置顺磁性样品,使得样品两端的磁场分布基本均匀,但提供足够的带宽用于产生输入微波脉冲的自旋回波。 公开了用于将输入脉冲引导到顺磁性样本中的一个的电路,在该顺磁样本之后,回波被从其回收并且形成到第二顺磁性样本的输入脉冲。 然后通过在稍后的选定时间将输入脉冲召回到第二顺磁性样品来提供假回波。

    Temperature-independent yig filter
    2.
    发明授权
    Temperature-independent yig filter 失效
    温度独立的YIG过滤器

    公开(公告)号:US3648199A

    公开(公告)日:1972-03-07

    申请号:US3648199D

    申请日:1970-06-01

    CPC classification number: H01P1/218

    Abstract: A cancellation effect is obtained between the temperaturedependent phenomenon of the externally applied magnetic field and the crystallographic orientation of a gyromagnetic element by utilizing a temperature compensating magnetic shunt in combination with a permanent magnet used to establish a unidirectional or DC magnetic field through the gyromagnetic element comprising a YIG sphere and selectively orienting its axis to a predetermined angle defined by the direction of the DC magnetic field wherein the resonance frequency of the YIG sphere increases with temperature. Thus, any decrease in saturation magnetization as a function of temperature is exactly cancelled out by selective orientation of the YIG sphere.

    Abstract translation: 通过利用温度补偿磁分流与用于通过回旋磁场建立单向或直流磁场的永磁体结合,外部施加的磁场的温度依赖性现象与回旋磁性元件的结晶取向之间获得消除效果 元件,其包括YIG球并且选择性地将其轴定向到由DC磁场的方向限定的预定角度,其中YIG球体的谐振频率随着温度而增加。 因此,作为温度的函数的饱和磁化强度的任何降低通过YIG球的选择性取向被精确抵消。

    Reciprocal phase shifter exhibiting negative phase shift
    4.
    发明授权
    Reciprocal phase shifter exhibiting negative phase shift 失效
    相位相移显示负相位移

    公开(公告)号:US3654576A

    公开(公告)日:1972-04-04

    申请号:US3654576D

    申请日:1969-03-25

    Inventor: BUCK DANIEL C

    CPC classification number: H01P1/19

    Abstract: A miniature electromagnetic wave apparatus or reciprocal phase shifter is disclosed. The apparatus comprises a wave guide structure having a longitudinal axis and at least first and second parallel elongated conductive members. The wave guide structure is dimensioned so as to support propagation of electromagnetic wave energy in a direction along the longitudinal axis of the wave guide structure. The electromagnetic wave energy as supported in said wave guide structure has longitudinally and transversely extending r.f. magnetic field components. A thin elongated body of gyromagnetic material is disposed between the conductive members so as to be traversed by the transversely extending magnetic field components. Means are associated with the wave guide structure for establishing a given state of magnetization within the body of gyromagnetic material and longitudinally thereof so as to effect negative phase shift of the wave energy propagated through the phase shifter.

    Abstract translation: 公开了一种微型电磁波装置或互相移相器。 该装置包括具有纵向轴线和至少第一和第二平行细长导电构件的波导结构。 波导结构的尺寸被设计成支持沿着波导结构的纵向轴线的方向上的电磁波能量的传播。 在所述波导结构中支撑的电磁波能量具有纵向和横向延伸的r.f. 磁场分量。 导电构件之间设置有细长的回转磁体,以便横向延伸的磁场分量穿过。 装置与波导结构相关联,用于在回旋磁材料的主体内和其纵向上建立给定的磁化状态,以便实现通过移相器传播的波能的负相移。

    High-frequency analogue to digital conversion apparatus
    7.
    发明授权
    High-frequency analogue to digital conversion apparatus 失效
    高频模数转换装置

    公开(公告)号:US3878532A

    公开(公告)日:1975-04-15

    申请号:US25943172

    申请日:1972-06-05

    Inventor: BUCK DANIEL C

    CPC classification number: G01S1/02 H03M1/26 H03M1/32

    Abstract: Apparatus is described for operation at high frequencies to convert analogue signals into corresponding digital signals. The high-frequency apparatus includes means such as an electron gun for producing a beam of electrons which is directed onto a target assembly of elements capable of providing a high degree of amplification of the incident electron beam. More specifically, the target assembly includes an apertured plate and semiconductor target elements disposed to receive the electron beam directed through the apertures of the plate. The analogue signal is applied to a suitable deflection mechanism for scanning the electron beam across the face of the target assembly. By arranging the apertures of the target assembly in defined array according to a suitable code for digital information, the semiconductor members may provide signals at separate output terminals corresponding to the desired quantization or levels of the analogue signals. For high-frequency operation, the electron deflection mechanism may assume the form of a traveling wave circuit such as a meander line to which is applied the highfrequency analogue input signal.

    Abstract translation: 描述了用于在高频率操作以将模拟信号转换成相应的数字信号的装置。 高频装置包括诸如用于产生电子束的电子枪的装置,其被引导到能够提供入射电子束的高度放大的元件的目标组件上。 更具体地,目标组件包括多孔板和半导体靶元件,其被设置为接收引导通过板的孔的电子束。 模拟信号被施加到合适的偏转机构,用于扫过目标组件的表面上的电子束。 通过根据用于数字信息的适当代码将目标组件的孔布置在限定的阵列中,半导体构件可以在对应于期望的模拟信号的量化或电平的分开的输出端处提供信号。 对于高频操作,电子偏转机构可以呈现诸如弯曲线的行波电路的形式,其中施加了高频模拟输入信号。

    Reciprocal ferrite film phase shifter having digitally controlled relative phase shift steps
    8.
    发明授权
    Reciprocal ferrite film phase shifter having digitally controlled relative phase shift steps 失效
    具有数字控制的相移相位步骤的回路铁片相片

    公开(公告)号:US3593216A

    公开(公告)日:1971-07-13

    申请号:US3593216D

    申请日:1969-05-02

    Inventor: BUCK DANIEL C

    CPC classification number: H01P1/19

    Abstract: The phase shifter comprises a ferrite film structured to define a multiple toroid configuration and having deposited on one surface thereof a microwave transmission line defining the direction of propagation of microwave energy. Flux driving means are digitally controlled for selectively driving the film to remanent conditions of magnetization of predetermined orientations relative to the direction of microwave propagation. In a preferred embodiment, the flux driving means includes a conducting film deposited between two layers of the ferrite film, which layers are integrally formed about the boundaries of the conducting film to define the multiple toroid configuration. Energization of selected latching current paths defined by the film provides for the selective flux driving of the film. Where Beta is the propagation constant of the microstrip, relative differential phase shift is expressed as ( Delta Beta / Beta ), and is a function of the remanent field strength in the direction of propagation. Selective current pulsing of the conducting film to establish latching current in selected ones of the current paths permits rapid switching of each step of relative phase shift.

    Reciprocal ferrite film phase shifter having latching conductor film
    9.
    发明授权
    Reciprocal ferrite film phase shifter having latching conductor film 失效
    具有导线导体膜的接头型薄膜相变器

    公开(公告)号:US3566311A

    公开(公告)日:1971-02-23

    申请号:US3566311D

    申请日:1969-05-02

    Inventor: BUCK DANIEL C

    CPC classification number: H01P1/19

    Abstract: THE PHASE SHIFTER COMPRISES AN INTEGERAL STRUCTURE OF FIRST AND SECOND SEPARATELY DEPOSITED FERRITE LAYERS AND AN INTERMEDIATE CONDUCTING FILM DEFINING ORTHOGONAL LATCHING CURRENT CONDUCTING PATHS AND SERVING TO STRUCTURE THE FERRITE FILM IN A DOUBLE TORROID CONFIGURATION. A MICROWAVE TRANSMISSION LINE INCLUDES A MICROSTRIP DEPOSITED ON THE SECOND FERRITE LAYER DEFINING THE DIRECTION OF PROPAGATION OF MICROWAVE ENERGY. ENERGIZATION OF THE CONDUCTING FILM FOR ESTABLISHING A FLOW OF LATCHING CURRENT IN A SELECTED ONE OF THE CONDUCTING PATHS THEREIN PROVIDES FOR FLUX DRIVING THE FILM TO A REMANENT CONDITION OF MAGNETIZATION IN A CORRESPONDING, DESIRED ORIENTATION, PARALLEL OR PERPENDICULAR TO THE DIRECTION OF MICROWAVE PROPAGATION. WHERE B IS THE PROPAGATION CONSTANT OF THE MICROSTRIP, RELATIVE

    DIFFERENTIAL PHASE SHIFT IS EXPRESSED AS $B/B, AND IS A FUNCTION OF THE REMEANENT FIELD STRENGTH IN THE DIRECTION OF PROPAGATION. ALTERNATE CURRENT PULSING OF THE CONDUCTING FILM TO ESTABLISH LATCHING CURRENT IN ALTERNATE ONES OF THE CURRENT PATHS PERMITS RAPID SWITCHING BETWEEN MINIMUM AND MAXIMUM RELATIVE PHASE SHIFT CONDITIONS.

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