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    • 51. 发明授权
    • Multiple FIFO NMR acquisition system
    • 多FIFO核磁共振采集系统
    • US4764894A
    • 1988-08-16
    • US136499
    • 1987-12-28
    • Robert S. Codrington
    • Robert S. Codrington
    • G01R33/28G11C19/00G01R33/08G06F3/00
    • G01R33/28
    • Synchronous apparatus capable of a variety of operational states responds to a sequence of digital control words, each specifying a desired state and persistence time of the state. The control words are furnished to the apparatus from a self-clocked FIFO in accord with the persistence code. A selected sub-sequence of digital control words in ROM is placed in an auxiliary FIFO upon detection of a corresponding token in the main sequence and control is passed to the auxiliary FIFO to furnish the sub-sequence to the apparatus. At the conclusion of the sub-sequence control is returned to the main FIFO and the main sequence is resumed.
    • 能够具有各种操作状态的同步装置响应一系列数字控制字,每个数字控制字指定状态的期望状态和持续时间。 根据持久性代码,控制字从自定时FIFO提供给设备。 在检测到主序列中的相应令牌时,将ROM中的数字控制字的所选子序列放置在辅助FIFO中,并且将控制传递到辅助FIFO以向该装置提供子序列。 在子序列结束时,控制返回主FIFO,并恢复主序列。
    • 53. 发明授权
    • Linearizer for TWT amplifiers
    • TWT放大器的线性化器
    • US4752743A
    • 1988-06-21
    • US912448
    • 1986-09-26
    • David PhamAllan PodellJohn A. Steck
    • David PhamAllan PodellJohn A. Steck
    • H03F1/32H03F3/58H03F1/33
    • H03F1/3276
    • The input signal to a TWT amplifier is predistorted in amplitude and phase to the inverse of the amplifier transfer characteristic by an adjustable circuit including a phase linearizing section and an amplitude linearizing section, both in series with the input signal and amplifier. Each section includes two pairs of back-to-front Schottky diodes. Preferably an additional diode is in series with one pair for the amplitude section. The diodes of each pair are of like polarity and opposite to the diodes of the other pair of the section. Additional diodes are connected between the pair junctions and ground, and adjustable D.C. bias fed into these junctions. Additional resistors and capacitors bridge the pairs, and are arranged into a phase delay network in one of the sections.
    • TWT放大器的输入信号通过包括与输入信号和放大器串联的相位线性化部分和幅度线性化部分的可调电路以幅度和相位预失真到放大器传输特性的倒数。 每个部分包括两对背对背肖特基二极管。 优选地,对于振幅部分,附加二极管与一对串联。 每对的二极管的极性与另一对部分的二极管相反。 附加的二极管连接在对结和接地之间,并且可调节的直流偏压馈送到这些结。 附加的电阻和电容桥接这些对,并且在其中一个部分中被布置成相位延迟网络。
    • 54. 发明授权
    • Wide bandwidth linear motor system
    • 宽带线性电机系统
    • US4751437A
    • 1988-06-14
    • US844068
    • 1986-03-26
    • William A. Gerard
    • William A. Gerard
    • H01J23/20H02K33/18H02K41/035H02P25/02H02K41/00
    • H02K33/18H01J23/20H02K41/0356H02P25/034H01H53/015
    • A wide bandwidth linear motor system suitable for high performance applications such as driving the tuning plunger of a magnetron oscillator. The linear motor includes a coil assembly with a structure which suppresses secondary resonances, thereby permitting the linear motor to be used in a wide bandwidth servo control loop. The coil assembly includes a cylindrical coil support, a bushing coaxial with the coil support for attachment to the linear motor shaft, a plurality of radial ribs connecting the coil support to the bushing and a coil having multiple turns wound circumferentially around the coil support. The coil support is subdivided by axial gaps into at least two separate coil support elements, each connected by a radial rib to the bushing. Resonance of the coil support and the coil is suppressed by the separate coil support elements and the lossy connection therebetween.
    • 适用于高性能应用的宽带线性电机系统,例如驱动磁控管振荡器的调谐柱塞。 线性电动机包括具有抑制二次谐振的结构的线圈组件,从而允许线性电动机用于宽带伺服控制回路中。 线圈组件包括圆柱形线圈支撑件,与用于连接到线性电动机轴的线圈支撑件同轴的衬套,将线圈支撑件连接到衬套的多个径向肋,以及围绕线圈支撑件周向缠绕的具有多个匝的线圈。 线圈支撑件被轴向间隙细分成至少两个单独的线圈支撑元件,每个线圈支撑元件通过径向肋连接到衬套。 线圈支撑件和线圈的共振被单独的线圈支撑元件和它们之间的有损连接抑制。
    • 55. 发明授权
    • Platen and beam setup flag assembly for ion implanter
    • 用于离子注入机的压板和梁设置标志组件
    • US4717829A
    • 1988-01-05
    • US51269
    • 1987-05-04
    • Norman L. Turner
    • Norman L. Turner
    • H01J37/317H01J37/00
    • H01J37/3171
    • A platen and beam setup assembly for use in an ion implanter includes a platen for wafer mounting and a beam setup flag for beam measurement. The platen and the setup flag are angularly displaced with respect to a common mounting shaft perpendicular to the ion beam. The assembly can be rotated about the shaft between a first position wherein the wafer is exposed to the ion beam and a second position wherein the setup flag is exposed to the ion beam. In a preferred embodiment, the platen is positioned for wafer exchange when the setup flag is exposed to the ion beam.
    • 用于离子注入机的压板和光束设置组件包括用于晶片安装的压板和用于光束测量的光束设置标志。 压板和设置标记相对于垂直于离子束的公共安装轴有角度位移。 该组件可以在其中晶片暴露于离子束的第一位置和第二位置之间围绕轴旋转,其中设置标志暴露于离子束。 在优选实施例中,当设置标志暴露于离子束时,压板被定位用于晶片交换。