利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

44 条记录 (耗时 0.012 秒)

    Transformer with controlled low coupling
    1.
    发明授权
    Transformer with controlled low coupling 失效
    具有受控低耦合的变压器

    公开(公告)号：US3629741A

    公开(公告)日：1971-12-21

    申请号：US3629741D

    申请日：1969-05-29

    申请人： BELL TELEPHONE LABOR INC

    发明人： BRUNE WILLIAM L

    IPC分类号： H01F38/08 ,  H03H7/08

    CPC分类号： H01F38/08 ,  H01F2029/143

    摘要： A transformer having controlled low coupling between its windings. The transformer comprises a unitary core of ferromagnetic material, such as ferrite or carbonyl iron, fabricated in one piece with first and second pairs of apertures formed therein. A primary winding is threaded through the first pair of apertures and a secondary winding is threaded through the second pair of apertures. The coupling between these windings is controlled by means including a portion of the unitary core which is located between the two pairs of apertures. This provides completely closed magnetic paths in the core material for all the magnetic flux produced by driving either the primary or secondary windings.

    Minimal distortion video bandpass filter
    5.
    发明授权
    Minimal distortion video bandpass filter 失效
    最小失真视频带通滤波器

    公开(公告)号：US4215325A

    公开(公告)日：1980-07-29

    申请号：US019039

    申请日：1979-03-09

    申请人： Francis N. Sansone

    发明人： Francis N. Sansone

    IPC分类号： H03H7/01 ,  H03H7/08 ,  H03H7/04 ,  H03H7/14

    CPC分类号： H03H7/0115 ,  H03H7/06 ,  H03H7/175 ,  H03H7/1758

    摘要： The present video bandpass filter passes a sinusoidal video output in response to a square pulse input. The video band-pass filter rejects d.c. and low frequency signal components as well as noise and spurious signals generated at the transmitting source. The video bandpass filter is comprised of an M-derived filter, a series-tuned notch filter, and a final d.c. blocking series-tuned filter which, together, pass the desired video with minimal distortion.

    摘要翻译： 本视频带通滤波器响应于平方脉冲输入通过正弦视频输出。 视频带通滤波器拒绝d.c. 和低频信号分量以及在发射源处产生的噪声和杂散信号。 视频带通滤波器由M导出滤波器，串联调谐陷波滤波器和最终直流滤波器组成。 阻塞串联调谐滤波器，它们一起以最小的失真传递所需的视频。

    Phase and amplitude programmable internal mixing SAW signal processor
    6.
    发明授权
    Phase and amplitude programmable internal mixing SAW signal processor 失效
    相位和幅度可编程内部混合SAW信号处理器

    公开(公告)号：US4207546A

    公开(公告)日：1980-06-10

    申请号：US967323

    申请日：1978-12-07

    申请人： Thomas W. Grudkowski

    发明人： Thomas W. Grudkowski

    IPC分类号： H03H9/25 ,  G06G7/19 ,  G06G7/195 ,  H03H3/08 ,  H03H9/42 ,  H03H7/08 ,  H01L27/20 ,  H03H9/26 ,  H03H9/30

    CPC分类号： G06G7/195

    摘要： A SAW signal processor includes a plurality of FET taps having individually programmable source-drain bias which controls both the amplitude and the phase of the mixing efficiency of internal product mixing of waves passing beneath the tap, in dependence upon the amplitude and polarity of the bias, the gates of the FETs may be interconnected so as to provide a summation of correlation at the output. Embodiments include multi-FET taps formed on substrates that are both semiconductive and piezoelectric, such as n-type epitaxial gallium aresenide, and ZnO coated silicon. Simple biphase and weighted biphase of phase-shifted tap pairs, for complete phase control, are disclosed.

    摘要翻译： SAW信号处理器包括具有单独可编程源极 - 漏极偏置的多个FET抽头，其根据偏置的幅度和极性控制通过抽头下方的波的内部产品混合的混合效率的幅度和相位 ，FET的栅极可以互连，以便在输出端提供相关的和。 实施例包括形成在半导体和压电的衬底上的多FET抽头，例如n型外延镓砷化物和ZnO包覆的硅。 公开了用于完全相位控制的相移抽头对的简单双相和加权双相。

    Intermediate-band crystal filter with low-transient response
    7.
    发明授权
    Intermediate-band crystal filter with low-transient response 失效
    具有低瞬态响应的中频带晶体滤波器

    公开(公告)号：US4060776A

    公开(公告)日：1977-11-29

    申请号：US687138

    申请日：1976-05-17

    申请人： Herman J. Blinchikoff

    发明人： Herman J. Blinchikoff

    IPC分类号： H03H9/54 ,  H03H7/04 ,  H03H7/08

    CPC分类号： H03H9/542

    摘要： An intermediate-band, low-transient crystal filter utilizing standard components. The filter is characterized by improved response and temperature stability and a size which is smaller than presently used LC filters, helical filters and wide-band crystal filters. This is achieved by an unusual partitioning of a low-pass prototype ladder network which yields a cascade of symmetric lattice sections and, hence, a realizable crystal filter. The cascade is composed of only two fundamental sections.

    摘要翻译： 采用标准组件的中频带低频晶体滤波器。 滤波器的特征在于响应和温度稳定性的改善以及小于目前使用的LC滤波器，螺旋滤波器和宽带晶体滤波器的尺寸。 这是通过低通原型梯形网络的不寻常分割来实现的，其产生级联的对称格子部分，并且因此产生可实现的晶体滤波器。 级联仅由两个基本部分组成。

    Yig filter having a single substrate with all transmission line means located on a common surface thereof
    8.
    发明授权
    Yig filter having a single substrate with all transmission line means located on a common surface thereof 失效
    具有位于其公共表面上的所有传输线路的单个基板的YIG滤波器

    公开(公告)号：US3740675A

    公开(公告)日：1973-06-19

    申请号：US3740675D

    申请日：1970-08-17

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： MOORE R ,  NELSON T

    IPC分类号： H01P1/218 ,  H01P3/08 ,  H03H7/08

    CPC分类号： H01P1/218

    摘要： One or more non-overlapping transmission line conductors fabricated on one planar surface of a single slab of an electric material mounted on a ground plane. At least one YIG resonator element is located in a cavity formed in the surface of the substrate facing the ground plane. The YIG resonator element, moreover, is positioned in close proximity to said one or more transmission line conductors a selected distance below the outer surface of the substrate and below the transmission line circuitry.

    摘要翻译： 一个或多个不重叠的传输线导体制造在安装在接地平面上的电气材料的单个平板的一个平面上。 至少一个YIG谐振元件位于形成在面向地平面的衬底的表面中的空腔中。 此外，YIG谐振元件被定位成紧邻所述一个或多个传输线导体，在基底的外表面下方并且在传输线电路之下的选定距离处。

    High-q bandpass resonators utilizing bandstop resonator pairs
    9.
    发明授权
    High-q bandpass resonators utilizing bandstop resonator pairs 失效
    高分辨率BANDPASS共振器利用BANDSTOP谐振器对

    公开(公告)号：US3737815A

    公开(公告)日：1973-06-05

    申请号：US3737815D

    申请日：1970-11-27

    申请人： LOW G ,  OKEAN H

    发明人： LOW G ,  OKEAN H

    IPC分类号： H01P1/203 ,  H01P7/08 ,  H01P3/04 ,  H01P3/08 ,  H03H7/08

    CPC分类号： H01P1/2039 ,  H01P7/082 ,  H01P7/084

    摘要： This disclosure describes high-Q bandpass resonators utilizing composite bandstop resonator pairs. The bandstop resonator pairs are formed of composite series or parallel connected realizable transmission line elements. The elements are exclusively either quarter-wavelength lines or half-wavelength lines.

    摘要翻译： 本公开描述了利用复合带阻谐振器对的高Q带通谐振器。 带阻谐振器对由复合串联或并联的可实现的传输线元件形成。 这些元素是四分之一波长线或半波长线。

    Microwave narrow band-pass filter
    10.
    发明授权
    Microwave narrow band-pass filter 失效
    微波窄带滤波器

    公开(公告)号：US3587008A

    公开(公告)日：1971-06-22

    申请号：US3587008D

    申请日：1968-06-24

    申请人： HUGHES AIRCRAFT CO

    发明人： TSUDA GEORGE I

    IPC分类号： H01P1/208 ,  H03H7/10 ,  H01P7/06 ,  H03H7/08

    CPC分类号： H01P1/208

    摘要： A very narrow band-pass microwave filter is described. Narrow bandwidth operation with low passband insertion loss is achieved by utilizing a cascaded combination of two band-pass filters coincidentally tuned in a unique manner. By providing independent adjustment of the two constituent filters of the cascaded combination arbitrarily narrow passband can be obtained over the operating frequency range.