中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

15 records (took 0.012 seconds)

    BUTLER MATRIX IMPLEMENTATION
    1.
    发明申请
    BUTLER MATRIX IMPLEMENTATION 审中-公开
    BUTLER矩阵实现

    公开(公告)号：US20080143601A1

    公开(公告)日：2008-06-19

    申请号：US11946979

    申请日：2007-11-29

    Applicant: Yufeng Xu

    Inventor： Yufeng Xu

    IPC: H01Q3/00

    CPC classification number: H01Q3/40 ,  H01Q25/00

    Abstract: A novel implementation of a planar 4×4 RF Butler matrix layout is disclosed that permits, by moving the beam ports to the interior of the layout, for combining beam ports that are not disposed on the same side of the layout without the imposition of long delay times or crossover points. The implementation admits of using microstrip and/or stripline technologies.

    Abstract translation: 公开了一种平面4x4 RF Butler矩阵布局的新颖实现，其允许通过将波束端口移动到布局的内部，用于组合未布置在布局的同一侧上的波束端口，而不施加长的延迟时间 或交叉点。 实施允许使用微带线和/或带状线技术。

    LED color-changing lamp and power supply circuit thereof
    3.
    发明授权
    LED color-changing lamp and power supply circuit thereof 有权

    公开(公告)号：US12213223B1

    公开(公告)日：2025-01-28

    申请号：US18811360

    申请日：2024-08-21

    Applicant: Yufeng Xu

    Inventor： Yufeng Xu

    IPC: H05B45/382 ,  F21V17/10 ,  F21V23/06 ,  H05B45/20 ,  H05B45/305 ,  H05B45/39 ,  F21Y115/10

    Abstract: A power supply circuit for an LED color-changing lamp is provided, which includes an input rectification circuit, an input filtering circuit, a control circuit, a transformer T1, an output rectification circuit, and an output filtering circuit; an input terminal of the input rectification circuit is connected to an AC power, an output terminal of the input rectification circuit is connected to the input filtering circuit. The input filtering circuit and the control circuit are both connected to an original side of the transformer T1; the output rectification circuit and the output filtering circuit are both connected to a secondary side of the transformer T1. The control circuit includes a first chip U1 in a model of MT3612. Through the above arrangement, the circuit is more integrated, the number of components in the circuit is reduced, the circuit structure is simplified, and the volume of the circuit board is reduced.

    Surface wave device with capacitance
    5.
    发明授权
    Surface wave device with capacitance 失效
    具有电容的表面波器件

    公开(公告)号：US5821834A

    公开(公告)日：1998-10-13

    申请号：US854067

    申请日：1997-05-08

    Applicant: Yufeng Xu ,  Ji-Dong Dai ,  Zhuo-Hui Chen

    Inventor： Yufeng Xu ,  Ji-Dong Dai ,  Zhuo-Hui Chen

    IPC: H03H9/00 ,  H03H9/64 ,  H03H9/25

    CPC classification number: H03H9/0057

    Abstract: A surface wave device filter comprises two 2-pole waveguide coupled double mode resonators (WCRs) electrically connected together in cascade. To permit narrowing of the filter passband for improved out-of-band rejection, e.g. for use of the filter as an intermediate frequency channel filter in a wireless communications system, while maintaining good matching for low ripple in the passband, a shunt capacitance is connected in parallel with the static capacitances of the two WCRs. The shunt capacitance is constituted by interdigital fingers provided on the same piezoelectric substrate as one or both of the WCRs, perpendicularly to the WCR fingers to avoid surface wave interference, conveniently in space otherwise used by rails of the WCRs, optionally with oppositely phased fingers to cancel surface waves generated by these fingers. A capacitance can be similarly provided on the same substrate as any other type of surface wave device.

    Abstract translation: 表面波器件滤波器包括级联电连接在一起的两个2极波导耦合双模谐振器（WCR）。 为了允许滤波器通带的变窄以改善带外抑制，例如， 为了在无线通信系统中使用滤波器作为中频信道滤波器，同时保持通带中低纹波的良好匹配，并联电容与两个WCR的静态电容并联连接。 并联电容由与WCR指状物垂直地设置在与一个或两个WCR相同的压电基板上的叉指电极构成，以避免表面波干涉，方便地在由WCR的轨道使用的空间中，可选地具有相对定位的手指 消除这些手指产生的表面波。 电容可以类似地设置在与任何其它类型的表面波器件相同的衬底上。

    Cascaded surface wave device filters providing balanced and unbalanced signal connections
    7.
    发明授权
    Cascaded surface wave device filters providing balanced and unbalanced signal connections 失效
    级联表面波器件滤波器提供平衡和不平衡的信号连接

    公开(公告)号：US5790000A

    公开(公告)日：1998-08-04

    申请号：US659396

    申请日：1996-06-06

    Applicant: Ji-Dong Dai ,  Yufeng Xu ,  John Choo Beng Saw ,  Zhuo-Hui Chen

    Inventor： Ji-Dong Dai ,  Yufeng Xu ,  John Choo Beng Saw ,  Zhuo-Hui Chen

    IPC: H03H9/00 ,  H03H9/25 ,  H03H9/64

    CPC classification number: H03H9/6469 ,  H03H9/0038 ,  H03H9/0042 ,  H03H9/0057 ,  H03H9/14588 ,  H03H9/25 ,  H03H9/6433 ,  H03H9/6459 ,  H03H9/6463

    Abstract: A cascaded surface wave device filter comprises two 2-pole surface wave device filters connected in cascade. The 2-pole filters each provide a balun function between balanced and unbalanced signal connections, and have either their unbalanced or their balanced signal connections interconnected in the cascade to reduce electromagnetic feedthrough and improve spurious mode suppression. The 2-pole filters are conveniently longitudinally coupled double mode surface wave resonators which are described, or transversely coupled double mode surface wave resonators. Higher order filters can be provided by connecting further 2-pole filters in the cascade. The cascaded filter is particularly useful for filtering at radio and intermediate frequencies in cellular radio equipment.

    Abstract translation: 级联表面波器件滤波器包括两个串联连接的两极表面波器件滤波器。 两极滤波器在平衡和不平衡信号连接之间提供平衡 - 不平衡转换功能，并且它们的不平衡或平衡信号连接在级联中互连，以减少电磁馈通并改善杂散模式抑制。 2极滤波器是方便的纵向耦合双模式表面波谐振器，其描述或横向耦合双模式表面波谐振器。 可以通过连接级联中的另外2极滤波器来提供高阶滤波器。 级联滤波器对于在蜂窝无线电设备中的无线电和中频进行滤波特别有用。

    Tunable optical filter and optical modulator
    8.
    发明授权
    Tunable optical filter and optical modulator 有权
    可调光滤波器和光调制器

    公开(公告)号：US06396632B1

    公开(公告)日：2002-05-28

    申请号：US09625175

    申请日：2000-07-25

    Applicant: Wen Liu ,  Yufeng Xu

    Inventor： Wen Liu ,  Yufeng Xu

    IPC: G02B2700

    CPC classification number: G02B5/20

    Abstract: A tunable optical filter is based on a conventional thin film optical filter. The thickness of the thin film optical filter determines the optical properties of the filter, specifically the pass band. The thin film optical filter is arranged within a hole extending through a layer of piezoelectric material such that the periphery of the thin film optical filter is secured to the periphery of the hole. Electrodes are provided on opposite surfaces of the piezoelectric layer such that different voltage levels can be applied. The resulting deformation of the piezoelectric layer causes a difference in the thickness of the thin film optical filter thereby permitting tuning of the optical filter.

    Abstract translation: 可调谐滤光器基于传统的薄膜滤光器。 薄膜光学滤波器的厚度确定滤光片的光学特性，特别是通带。 薄膜滤光器布置在延伸穿过压电材料层的孔中，使得薄膜滤光器的周边固定到孔的周边。 电极设置在压电层的相对表面上，使得可以施加不同的电压电平。 由此导致的压电层的变形导致薄膜滤光器的厚度差异，从而允许调整滤光器。

    Method and terminal of displaying contact list
    9.
    发明授权
    Method and terminal of displaying contact list 有权
    显示联系人列表的方法和终端

    公开(公告)号：US09013427B2

    公开(公告)日：2015-04-21

    申请号：US13592106

    申请日：2012-08-22

    Applicant: Rui Li ,  Yong Liu ,  Yufeng Xu

    Inventor： Rui Li ,  Yong Liu ,  Yufeng Xu

    IPC: G06F3/041 ,  G06F3/042 ,  A63F9/24 ,  H04M1/2745 ,  G06F3/0482 ,  G06F3/0488

    CPC classification number: H04M1/27455 ,  G06F3/0482 ,  G06F3/04886 ,  H04M1/274583 ,  H04M2250/22

    Abstract: The present disclosure relates to communication technologies and discloses a method and terminal of displaying a contact list. The method of displaying a contact list is applied on an apparatus with a touch sensitive display, comprising: detecting a touch on the touch sensitive display, after receiving an instruction for opening a contact list; determining a touch position, when detecting the touch on the touch sensitive display; and determining a large contact group corresponding to the touch position, and displaying contacts in the large contact group by the touch sensitive display. With the present disclosure, a user can find out a contact quickly, and the user's experience can be improved.

    Abstract translation: 本公开涉及通信技术，并且公开了显示联系人列表的方法和终端。 显示联系人列表的方法被应用在具有触敏显示器的设备上，包括：在接收到打开联系人列表的指令之后，检测对触敏显示器的触摸; 当检测到所述触敏显示器上的触摸时，确定触摸位置; 以及确定对应于所述触摸位置的大接触组，以及通过所述触敏显示器显示所述大接触组中的触点。 通过本公开，用户可以快速找到联系人，并且可以提高用户的体验。

    METHOD AND TERMINAL OF DISPLAYING CONTACT LIST
    10.
    发明申请
    METHOD AND TERMINAL OF DISPLAYING CONTACT LIST 有权
    显示联系人列表的方法和终端

    公开(公告)号：US20130027335A1

    公开(公告)日：2013-01-31

    申请号：US13592106

    申请日：2012-08-22

    Applicant: Rui Li ,  Yong Liu ,  Yufeng Xu

    Inventor： Rui Li ,  Yong Liu ,  Yufeng Xu

    IPC: G06F3/041

    CPC classification number: H04M1/27455 ,  G06F3/0482 ,  G06F3/04886 ,  H04M1/274583 ,  H04M2250/22

    Abstract: The present disclosure relates to communication technologies and discloses a method and terminal of displaying a contact list. The method of displaying a contact list is applied on an apparatus with a touch sensitive display, comprising: detecting a touch on the touch sensitive display, after receiving an instruction for opening a contact list; determining a touch position, when detecting the touch on the touch sensitive display; and determining a large contact group corresponding to the touch position, and displaying contacts in the large contact group by the touch sensitive display. With the present disclosure, a user can find out a contact quickly, and the user's experience can be improved.

    Abstract translation: 本公开涉及通信技术，并且公开了显示联系人列表的方法和终端。 显示联系人列表的方法被应用在具有触敏显示器的设备上，包括：在接收到打开联系人列表的指令之后，检测对触敏显示器的触摸; 当检测到所述触敏显示器上的触摸时，确定触摸位置; 以及确定与所述触摸位置对应的大触点组，以及通过所述触敏显示器显示所述大触点组中的触点。 通过本公开，用户可以快速找到联系人，并且可以提高用户的体验。

Patent Agency Ranking