公开(公告)号：US5351007A

公开(公告)日：1994-09-27

申请号：US891591

申请日：1992-06-01

申请人： Richard S. Withers ,  Guo-Chun Liang

发明人： Richard S. Withers ,  Guo-Chun Liang

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01V3/00

CPC分类号： G01R33/34053 ,  G01R33/3628 ,  G01R33/34023 ,  G01R33/34092 ,  Y10S505/844

摘要： A broadband matching network for coupling a magnetic resonance probe to a preamplifier utilizes superconducting matching coils and superconducting locatable shields to detect very weak magnetic signals over a broad bandwidth. The superconducting matching coils and shields minimize signal loss in the matching amplifier. When used with a superconducting magnetic resonance probe, the circuit provides a significant broadening in bandwidth over that of the probe without loss of performance.

摘要翻译： 用于将磁共振探针耦合到前置放大器的宽带匹配网络利用超导匹配线圈和超导定位屏蔽来在宽带宽上检测非常弱的磁信号。 超导匹配线圈和屏蔽使匹配放大器中的信号损耗最小化。 当与超导磁共振探头一起使用时，该电路可以显着提高带宽，而不会损失探头。

公开(公告)号：US5276398A

公开(公告)日：1994-01-04

申请号：US929900

申请日：1992-08-11

申请人： Richard S. Withers ,  Guo-Chun Liang

发明人： Richard S. Withers ,  Guo-Chun Liang

IPC分类号： G01R33/341 ,  A61B5/055 ,  G01R33/34 ,  G01R33/36 ,  H01F5/00 ,  H01F6/00 ,  G01V3/00

CPC分类号： G01R33/3628 ,  G01R33/34 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34092 ,  Y10S505/844

摘要： A magnetic resonance probe coil is fabricated using a superconductive material for the coil. Three distinct embodiments are described: a single-layer coil with no crossovers; a dual-film coil wherein the capacitors are formed through an intermediate dielectric layer; a single-layer coil incorporating a superconducting crossover. All of the embodiments are designed to take advantage of the properties of the superconducting material to achieve very high quality factors (Q) of tens of thousands to over a million. The superconductor is patterned into a spiral design to achieve self-resonance at a desired frequency in the range of 1 to 1000 MHz and the device operates at temperatures higher than 30 K. A broadband matching network is also disclosed which, when operated in conjunction with the superconducting magnetic resonance probe coil, allows operation over a wide range of frequencies while maintaining extremely low loss.

摘要翻译： 使用用于线圈的超导材料制造磁共振探针线圈。 描述了三个不同的实施例：没有交叉的单层线圈; 一种双电影线圈，其中电容器通过中间介质层形成; 包含超导交叉的单层线圈。 所有实施例被设计为利用超导材料的性质来实现数万到超过一百万的非常高的质量因子（Q）。 将超导体图案化为螺旋设计，以在1至1000MHz的范围内以期望的频率实现自谐振，并且器件在高于30K的温度下工作。还公开了宽带匹配网络，其与 超导磁共振探针线圈允许在宽范围的频率下工作，同时保持极低的损耗。

公开(公告)号：US5233500A

公开(公告)日：1993-08-03

申请号：US893416

申请日：1992-06-01

申请人： Guo-Chun Liang ,  Richard S. Withers

发明人： Guo-Chun Liang ,  Richard S. Withers

IPC分类号： H01L23/66

CPC分类号： H01L23/66 ,  H01L2924/0002 ,  H01L2924/3011

摘要： A lobed package for the protection and electrical connection of microwave devices is presented. The distinctive shape of the package allows several large devices to be connected in series in a coplanar arrangement. In the preferred embodiment, a base layer is formed into a trefoil shape with a central raised pedestal. Three wafer sized modules are cut to fit together at 120.degree. angles and are placed on the pedestal and electrically interconnected. A retaining shim is placed around the outside of the modules. An intermediate spring retaining plate with a recessed three-lobed well is placed atop the modules. Springs are placed in holes in the retaining plate. The springs are compressed by a cover plate placed on top of the retaining plate. Electrical connections are made to the cascaded device through the base or edge of the package. One application is to packaging three delay lines in series, each device occupying most of the space of a standard wafer.

摘要翻译： 提出了一种用于微波器件保护和电气连接的裂纹封装。 封装的独特形状允许几个大型器件以共面布置串联连接。 在优选实施例中，基底层形成为具有中央凸台的三叶形状。 将三个晶片尺寸的模块切割成120度角配合在一起并放置在基座上并进行电互连。 保持垫片放置在模块外侧。 具有凹陷的三裂孔的中间弹簧保持板放置在模块的顶部。 弹簧放置在固定板上的孔中。 弹簧被放置在保持板顶部的盖板压缩。 通过封装的基座或边缘对级联器件进行电气连接。 一个应用是串联三个延迟线，每个器件占据标准晶片的大部分空间。

公开(公告)号：US5986453A

公开(公告)日：1999-11-16

申请号：US965842

申请日：1997-11-07

申请人： Weston Anderson ,  Richard S. Withers

发明人： Weston Anderson ,  Richard S. Withers

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01V3/00

CPC分类号： G01R33/34053 ,  G01R33/34061 ,  G01R33/56536 ,  G01R33/34023 ,  G01R33/34092

摘要： A method and apparatus which utilizes the hysteritic behavior of type II superconductors is provided for reducing the effective magnetic susceptibility of such high temperature superconducting materials being used close to the sample region in nuclear magnetic resonance system probes by providing decaying AC changes in the magnetic field parallel to said superconductive material. The method is particularly applicable to receiver coils. Reducing the effective magnetic susceptibility of superconducting receiver coils enables the improved sensitivity they inherently provide to be realized without loss of resolution resulting from line broadening caused by susceptibility discontinuities of materials near the sample region of the probe.

摘要翻译： 提供利用II型超导体的迟滞行为的方法和装置，用于通过在磁场平行中提供衰减的AC变化来降低在核磁共振系统探针中靠近样品区域使用的这种高温超导材料的有效磁化率 到所述超导材料。 该方法特别适用于接收器线圈。 降低超导接收线圈的有效磁化率使得能够实现它们固有地提供的改进的灵敏度，而不会由于由探针的样品区域附近的材料的敏感性不连续性引起的线展宽而导致的分辨率损失。

公开(公告)号：US4652926A

公开(公告)日：1987-03-24

申请号：US602938

申请日：1984-04-23

申请人： Richard S. Withers ,  Richard W. Ralston ,  Ernest R. Stern

发明人： Richard S. Withers ,  Richard W. Ralston ,  Ernest R. Stern

IPC分类号： H01L27/148 ,  H04N3/36 ,  H04N5/372 ,  H04N3/14

CPC分类号： H04N3/15 ,  H04N3/36

摘要： An optical imaging system for use as a solid-state camera, for example, which includes a plurality of solid-state elements for providing long-term storage of images, such elements being, for example, MNOS chips having a plurality of storage cells, which chips when exposed to an image focussed thereon can store a representation thereof. The chips are at a later time optically addressed, as by a scanning-light beam, to read out the stored image so as to provide an electrical output representing the stored image, such output being usable to provide a visual representation of the image such as on a display screen or in hard copy form.

摘要翻译： 例如，用作固态摄像机的光学成像系统，其包括用于提供图像的长期存储的多个固态元件，诸如具有多个存储单元的MNOS芯片， 当暴露于聚焦在其上的图像时，哪个芯片可以存储其表示。 芯片随后通过扫描光束被光学寻址，以读出所存储的图像，以便提供表示所存储的图像的电输出，该输出可用于提供图像的视觉表示，例如 在显示屏幕上或硬拷贝的形式。

公开(公告)号：US20080150536A1

公开(公告)日：2008-06-26

申请号：US11643152

申请日：2006-12-20

申请人： Richard S. Withers

发明人： Richard S. Withers

IPC分类号： G01R33/36

CPC分类号： G01R33/422 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34069 ,  G01R33/34092

摘要： RF electric fields produced by electric potential differences in the NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and increased noise in NMR spectroscopy. Electrically conducting strips in close proximity to the windings of the NMR probe coil and oriented at right angles to direction of the coil winding they cross provide an alternative path for these electric fields while causing negligible effect upon the RF magnetic field, thereby increasing the sensitivity of the NMR probe.

摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声增加。 靠近NMR探针线圈的绕组并且与它们交叉的线圈绕组的方向成直角定向的导电条提供了用于这些电场的替代路径，同时对RF磁场造成可忽略的影响，从而增加了 NMR探针。

公开(公告)号：US06842004B2

公开(公告)日：2005-01-11

申请号：US10424687

申请日：2003-04-28

申请人： Richard S. Withers ,  Robert E. Nast

发明人： Richard S. Withers ,  Robert E. Nast

IPC分类号： G01R33/32 ,  G01R33/34 ,  H01F5/00 ,  H01F6/00 ,  G01V3/00

CPC分类号： G01R33/341 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34061 ,  G01R33/34092

摘要： Improved superconducting coils for a nuclear magnetic resonance probe use capacitive elements that are located in regions further from an active sample volume than magnetic field generating elements to which they are electrically connected. The sample volume is a substantially oblong shape, and the magnetic field generating elements run substantially parallel to the major axis of the shape, while the capacitor elements run perpendicular to the major axis. Gaps between the capacitor elements, and the width of the elements themselves, may increase toward the outside of the coil to minimize electrical discharge. The variation may be according to a monotonic, possibly linear, function. Discharge may also be minimized by using a dielectric cover that, together with a coil substrate, encloses the coil.

摘要翻译： 用于核磁共振探针的改进的超导线圈使用位于比活动样品体积更远的区域的电容元件，而不是与它们电连接的磁场产生元件。 样品体积是基本上长方形的，并且磁场产生元件基本上平行于形状的长轴延伸，而电容器元件垂直于长轴延伸。 电容器元件之间的间隙和元件本身的宽度可能朝向线圈的外部增加以最小化放电。 该变化可以是根据单调的，可能是线性的。 也可以通过使用与线圈基板一起包围线圈的电介质盖来最小化放电。

公开(公告)号：US06556013B2

公开(公告)日：2003-04-29

申请号：US09803199

申请日：2001-03-09

申请人： Richard S. Withers

发明人： Richard S. Withers

IPC分类号： G01V300

CPC分类号： G01R33/341 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34061 ,  G01R33/34092

摘要： Improved superconducting coils for a nuclear magnetic resonance probe use capacitive elements that are located in regions further from an active sample volume than magnetic field generating elements to which they are electrically connected. The sample volume is a substantially oblong shape, and the magnetic field generating elements run substantially parallel to the major axis of the shape, while the capacitor elements run perpendicular to the major axis. The magnetic field generating elements and the capacitor elements may vary in length relative to their distance from a center of the oblong shape. The total number of capacitors formed by the loops may vary from one embodiment to another, typically depending on the necessary resonant frequency. A coil may use sub-coils, each of which incorporates a plurality of the magnetic field generating elements and interdigital capacitor elements, the capacitor elements preferably being located to both sides of the oblong shape.

摘要翻译： 用于核磁共振探针的改进的超导线圈使用位于比活动样品体积更远的区域的电容元件，而不是与它们电连接的磁场产生元件。 样品体积是基本上长方形的，并且磁场产生元件基本上平行于形状的长轴延伸，同时电容器元件垂直于长轴延伸。 磁场产生元件和电容器元件的长度可相对于距离长方形中心的距离而变化。 由环路形成的电容器的总数可以从一个实施例变化到另一个实施例，通常取决于所需的谐振频率。 线圈可以使用子线圈，每个子线圈包括多个磁场产生元件和叉指电容器元件，电容器元件优选地位于长方形的两侧。

公开(公告)号：US07446534B2

公开(公告)日：2008-11-04

申请号：US11643152

申请日：2006-12-20

申请人： Richard S. Withers

发明人： Richard S. Withers

IPC分类号： G01V3/00

CPC分类号： G01R33/422 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34069 ,  G01R33/34092

摘要： RF electric fields produced by electric potential differences in the NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and increased noise in NMR spectroscopy. Electrically conducting strips in close proximity to the windings of the NMR probe coil and oriented at right angles to direction of the coil winding they cross provide an alternative path for these electric fields while causing negligible effect upon the RF magnetic field, thereby increasing the sensitivity of the NMR probe.

摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声增加。 靠近NMR探针线圈的绕组并且与它们交叉的线圈绕组的方向成直角定向的导电条提供了用于这些电场的替代路径，同时对RF磁场造成可忽略的影响，由此增加了 NMR探针。

公开(公告)号：US06958244B2

公开(公告)日：2005-10-25

申请号：US10122153

申请日：2002-04-12

申请人： Volker Dötsch ,  Richard S. Withers

发明人： Volker Dötsch ,  Richard S. Withers

IPC分类号： G01R33/46 ,  G01R33/465 ,  G01N24/00

CPC分类号： G01R33/46 ,  G01R33/465 ,  Y10T436/10 ,  Y10T436/108331 ,  Y10T436/24

摘要： An NMR buffer is particularly useful for biomolecules that require a certain amount of salt in the buffer solution. A primary buffer component and a titrating component are selected based on low ion mobility. These selections allow for a lower conductivity buffer without reducing the salt content. As such, a higher sensitivity experiment results.

摘要翻译： NMR缓冲液特别适用于在缓冲溶液中需要一定量盐的生物分子。 基于低离子迁移率选择初级缓冲剂组分和滴定组分。 这些选择允许较低的电导率缓冲液，而不会降低盐含量。 因此，更高的灵敏度实验结果。