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    • 1. 发明申请
    • APPARATUS AND METHOD FOR MEASURING THICKNESS OF PRINTED CIRCUIT BOARD
    • 用于测量印刷电路板厚度的装置和方法
    • US20130275083A1
    • 2013-10-17
    • US13447490
    • 2012-04-16
    • Jin JEONG
    • Jin JEONG
    • G01N27/02G01B17/02G06F15/00
    • G01B7/06
    • An apparatus for measuring a thickness of at least one insulating layer of a printed circuit board (PCB), the at least one insulating layer having a transmission line located thereon. The apparatus includes an impedance measurement unit configured to input a plurality of input signals to the transmission line, each of the input signals having a respective frequency, to receive output signals from the transmission line, and to determine impedance values of the at least one insulating layer based on the input signals and the output signals; and a thickness calculation unit configured to calculate a thickness of the at least one insulating layer based on the impedance values.
    • 一种用于测量印刷电路板(PCB)的至少一个绝缘层的厚度的装置,所述至少一个绝缘层具有位于其上的传输线。 该装置包括:阻抗测量单元,被配置为向传输线输入多个输入信号,每个输入信号具有相应的频率,以接收来自传输线的输出信号,并确定至少一个绝缘体的阻抗值 基于输入信号和输出信号的层; 以及厚度计算单元,被配置为基于所述阻抗值来计算所述至少一个绝缘层的厚度。
    • 9. 发明授权
    • Microcap acoustic transducer device
    • 微型声学传感器装置
    • US08280080B2
    • 2012-10-02
    • US12430966
    • 2009-04-28
    • Joel PhilliberJohn ChoyDavid Martin
    • Joel PhilliberJohn ChoyDavid Martin
    • H04R25/00H04R9/08H04R11/04H04R17/02H04R19/04H04R21/02H04R1/02
    • H04R31/00
    • A device includes a first wafer, a second wafer, a gasket bonding the first wafer to the second wafer to define a cavity between the first wafer and the second wafer, and an acoustic transducer disposed on the first wafer and disposed within the cavity between the first wafer and the second wafer. One or more apertures are provided for communicating an acoustic signal between the acoustic transducer and an exterior of the device. An aperture may be formed in the cavity itself, or the cavity may be hermetically sealed. An aperture may be formed completely through the first wafer and located directly beneath at least a portion of the acoustic transducer.
    • 一种器件包括第一晶片,第二晶片,将第一晶片连接到第二晶片以在第一晶片和第二晶片之间限定空腔的垫圈,以及设置在第一晶片上并设置在第一晶片之间的空腔内的声换能器 第一晶片和第二晶片。 提供一个或多个孔,用于在声换能器和装置的外部之间传递声信号。 可以在空腔本身中形成孔,或者可以将空腔气密地密封。 孔可以完全穿过第一晶片形成,并且直接位于声换能器的至少一部分下方。
    • 10. 发明申请
    • MULTI-BAND WIRELESS COMMUNICATION DEVICE WITH MULTIPLEXER AND METHOD OF MULTIPLEXING MULTI-BAND WIRELESS SIGNALS
    • 具有多路复用器的多带无线通信设备和多层无线信号多路复用方法
    • US20120243446A1
    • 2012-09-27
    • US13071863
    • 2011-03-25
    • William Carrol MUELLERRay PARKHURST
    • William Carrol MUELLERRay PARKHURST
    • H04W4/00H04J3/00
    • H04J1/08H04B1/0057H04W88/06
    • An apparatus includes: a first multiplexer configured to allow bi-directional communication over a first plurality of multiplexed communication bands that each include a corresponding transmit band and a corresponding receive band, wherein none of the transmit bands of the first multiplexer have transmit frequencies that overlap with any receive frequencies of any of the receive bands of the first multiplexer; a second multiplexer configured to allow bi-directional communication over a second plurality of multiplexed communication bands that each include a corresponding transmit band and a corresponding receive band, wherein none of the transmit bands of the second multiplexer have transmit frequencies that overlap with any receive frequencies of any of the receive bands of the second multiplexer; and an electromechanical band switch configured to selectively connect the first and second multiplexers to a common antenna.
    • 一种装置包括:第一多路复用器,被配置为允许在包括对应的发射频带和对应的接收频带的第一多个复用的通信频带上进行双向通信,其中第一多路复用器的发射频带中没有一个发射频率重叠 具有第一多路复用器的任何接收频带的任何接收频率; 第二多路复用器,被配置为允许在每个包括对应的发射频带和对应的接收频带的第二多路复用通信频带上进行双向通信,其中第二多路复用器的发射频带都不具有与任何接收频率重叠的发射频率 的第二多路复用器的接收频带; 以及机电频带开关,被配置为选择性地将第一和第二多路复用器连接到公共天线。