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19 条记录 (耗时 0.025 秒)

    Yig-tuned bulk semiconductor oscillator
    13.
    发明授权
    Yig-tuned bulk semiconductor oscillator 失效
    YIG-TUNED BULK半导体振荡器

    公开(公告)号：US4048588A

    公开(公告)日：1977-09-13

    申请号：US675245

    申请日：1976-04-08

    申请人： Kurt E. Zublin ,  Walter T. Wilser

    发明人： Kurt E. Zublin ,  Walter T. Wilser

    IPC分类号： H03B9/14 ,  H03B7/14 ,  H03B9/12

    CPC分类号： H03B9/142

    摘要： A bulk semiconductor oscillator subassembly is carried on a support pin. The oscillator assembly includes a semiconductor diode mounted on the pin with one terminal connected thereto. The other terminal is connected to one end of an input coupling loop which has its other end connected to the pin through a by-pass capacitor. Biasing voltages are applied to the diode via a lead connected to the loop. The loop is coupled to a Yttrium Iron Garnet (YIG) sphere which serves as a resonator. The resonant frequency of the resonator is tuned by adjusting a DC magnetic field applied thereto. The output is obtained by an output loop which is located orthogonally with respect to the input loop and coupled to the YIG whereby the input and output loops are coupled through the YIG resonator.

    Biplane ultrasound imaging and corresponding transducer
    14.
    发明申请
    Biplane ultrasound imaging and corresponding transducer 有权
    双平面超声成像及相应的传感器

    公开(公告)号：US20080294052A1

    公开(公告)日：2008-11-27

    申请号：US11805162

    申请日：2007-05-21

    申请人： Walter T. Wilser ,  Lex Garbini

    发明人： Walter T. Wilser ,  Lex Garbini

    IPC分类号： A61B8/00

    CPC分类号： A61B8/4488 ,  A61B8/12 ,  A61B8/14 ,  A61B8/445

    摘要： An ultrasonic imaging tube is provided. A tube body has a longitudinal axis and a circumference. A first transducer array is disposed in the body along the longitudinal axis. A second transducer array is disposed in the body along the longitudinal axis. The first transducer array is substantially parallel with the second transducer array. The first transducer array and the second transducer array are at a first non-zero angle to each other about the longitudinal axis.

    摘要翻译： 提供超声波成像管。 管体具有纵向轴线和圆周。 第一换能器阵列沿着纵向轴线设置在主体中。 第二换能器阵列沿纵向轴线设置在主体内。 第一换能器阵列基本上与第二换能器阵列平行。 第一换能器阵列和第二换能器阵列围绕纵向轴线彼此成为第一非零角度。

    Helical acoustic array for medical ultrasound
    15.
    发明申请
    Helical acoustic array for medical ultrasound 有权
    用于医用超声的螺旋声阵列

    公开(公告)号：US20080125659A1

    公开(公告)日：2008-05-29

    申请号：US11605738

    申请日：2006-11-28

    申请人： Walter T. Wilser ,  Stephen R. Barnes ,  Lex Garbini

    发明人： Walter T. Wilser ,  Stephen R. Barnes ,  Lex Garbini

    IPC分类号： A61B8/00

    CPC分类号： A61B8/4494 ,  A61B8/12 ,  A61B8/445 ,  A61B8/4488 ,  A61B8/483 ,  A61B2562/12 ,  B06B1/0622 ,  G01S7/52079 ,  G01S15/8929 ,  G01S15/8993 ,  Y10T29/49908

    摘要： An acoustic array is helical or twisted about or around an azimuth axis. For example, one end of the array has an emitting face at 0 degrees, but the other end has an emitting face at 20 degrees. The elements in between gradually transition between the different rotations. Different apertures of the twisted array may be used to scan different generally radial diverging planes for three-dimensional imaging. The different amount of relative rotation associated with each aperture cause angular elevation spacing of the planes. For use in a catheter, a single row of elements may be used to scan electrically a volume.

    摘要翻译： 声阵列绕方位轴线或绕其方向扭转。 例如，阵列的一端具有0度的发射面，而另一端具有20度的发射面。 元素之间逐渐过渡不同的旋转之间。 扭转阵列的不同孔径可用于扫描用于三维成像的不同的通常径向发散平面。 与每个孔相关联的不同量的相对旋转导致平面的角仰角间距。 为了在导管中使用，可以使用单排元件来电气扫描体积。

    Curved capacitive membrane ultrasound transducer array
    17.
    发明授权
    Curved capacitive membrane ultrasound transducer array 失效
    弯曲电容膜超声换能器阵列

    公开(公告)号：US07732992B2

    公开(公告)日：2010-06-08

    申请号：US12396410

    申请日：2009-03-02

    申请人： Walter T. Wilser ,  Sean T. Hansen ,  Grazyna M. Palczewska ,  Stephen R. Barnes

    发明人： Walter T. Wilser ,  Sean T. Hansen ,  Grazyna M. Palczewska ,  Stephen R. Barnes

    IPC分类号： H01L41/04 ,  H01L41/08

    CPC分类号： B06B1/0292

    摘要： CMUT elements are formed on a substrate. Electrical conductors are formed to interconnect between different portions of the substrate. The substrate is then separated into pieces while maintaining the electrical connections across the separation. Since the conductors are flexible, the separated substrate slabs may be positioned on a curved surface while maintaining the electrical interconnection between the slabs. Large curvatures may be provided, such as associated with forming a multidimensional transducer array for use in a catheter. The electrical interconnections between the different slabs and elements may allow for a walking aperture arrangement for three dimensional imaging.

    摘要翻译： CMUT元件形成在基板上。 电导体形成为在衬底的不同部分之间互连。 然后将衬底分离成片，同时保持穿过分离的电连接。 由于导体是柔性的，所以分离的基板可以定位在弯曲表面上，同时保持板之间的电互连。 可以提供大的曲率，例如与形成用于导管的多维换能器阵列有关。 不同板坯和元件之间的电互连可以允许用于三维成像的步行孔布置。

    Expandable ultrasound transducer array
    18.
    发明授权
    Expandable ultrasound transducer array 有权
    可扩展超声波换能器阵列

    公开(公告)号：US07500954B2

    公开(公告)日：2009-03-10

    申请号：US11233779

    申请日：2005-09-22

    申请人： Walter T. Wilser ,  John Paul Mohr

    发明人： Walter T. Wilser ,  John Paul Mohr

    IPC分类号： A61B8/12

    CPC分类号： A61B8/4488 ,  A61B8/12 ,  A61B8/445 ,  B06B1/0292

    摘要： A foldable transducer array is unfolded or deployed for use, providing a larger radiating surface. While folded, the transducer array has a smaller width or volume for insertion into and withdrawal from the patient.

    摘要翻译： 可折叠的换能器阵列展开或展开以供使用，提供较大的辐射表面。 当折叠时，换能器阵列具有较小的宽度或体积，用于插入患者体内并从患者身上拔出。

    RF Amplifier circuit employing FET devices
    19.
    发明授权
    RF Amplifier circuit employing FET devices 失效
    RF放大器电路采用FET器件

    公开(公告)号：US4423388A

    公开(公告)日：1983-12-27

    申请号：US316130

    申请日：1981-10-29

    申请人： Emil J. Crescenzi, Jr. ,  Walter T. Wilser ,  Richard W. Oglesbee ,  Richard B. Gold

    发明人： Emil J. Crescenzi, Jr. ,  Walter T. Wilser ,  Richard W. Oglesbee ,  Richard B. Gold

    IPC分类号： H03F3/193 ,  H03F3/60 ,  H03F3/04

    CPC分类号： H03F3/601 ,  H03F3/1935

    摘要： An RF amplifier including first and second FETs which are interconnected to function as a single transistor with improved gate. An input signal is applied across the gate and source of the first FET, and an output signal is obtained across the drain and source of the second transistor. RF coupling of the FETs is provided by first and second serially connected transmission lines connected between the drain of the first FET and the gate of the second FET. A third transmission line connects the common terminal of the first and second transmission line to circuit ground. In a preferred embodiment, the amplifier comprises a monolithic circuit formed in gallium arsenide with the transmission lines comprising microstrip.

    摘要翻译： 一种RF放大器，包括互连以用作具有改进的栅极的单个晶体管的第一和第二FET。 输入信号施加在第一FET的栅极和源极之间，并且跨越第二晶体管的漏极和源极获得输出信号。 FET的RF耦合由连接在第一FET的漏极和第二FET的栅极之间的第一和第二串联连接的传输线提供。 第三传输线将第一和第二传输线的公共端连接到电路接地。 在优选实施例中，放大器包括在砷化镓中形成的单片电路，其中传输线包括微带线。