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    • 4. 发明授权
    • Radio-frequency switch circuit
    • 射频开关电路
    • US08170500B2
    • 2012-05-01
    • US12500020
    • 2009-07-09
    • Toshiki SeshitaHirotsugu Wakimoto
    • Toshiki SeshitaHirotsugu Wakimoto
    • H04B1/44
    • H03K17/693H03K2217/0036H03K2217/0054H04B1/005H04B1/48
    • A radio-frequency switch circuit of the invention includes: n-stage through FETs (field effect transistors) connected in series between the antenna terminal and each of the radio-frequency terminals, where n is a natural number; a radio-frequency leakage prevention resistor connected to a gate of the through FETs; a control signal line commonly connected to the gates of the n-stage through FETs connected to the same radio-frequency terminal; and a resistor connected to each of at least two of the control signal lines and connected to the radio-frequency leakage prevention resistor in series The two control signal lines are capacitively coupled between the resistor and the through FETs.
    • 本发明的射频开关电路包括:天线端子和每个射频端子串联连接的n级通过FET(场效应晶体管),其中n是自然数; 连接到通过FET的栅极的射频防漏电阻器; 通常连接到连接到同一射频终端的n级通过FET的栅极的控制信号线; 和连接到至少两个控制信号线中的每一个并连接到串联的射频防漏电阻器的电阻器。两个控制信号线电容耦合在电阻器和通过FET之间。
    • 8. 发明授权
    • Demultiplexer
    • DEMULTIPLEXER
    • US5128940A
    • 1992-07-07
    • US580870
    • 1990-09-11
    • Hirotsugu Wakimoto
    • Hirotsugu Wakimoto
    • H03K17/00H04J3/04
    • H04J3/047
    • A demultiplexer has a main circuit section obtained by connecting a plurality of 1:2 demultiplexers, each for distributing a time-divisionally multiplexed signal into tow parts, to form a tree-like arrangement, and a clock frequency divider for frequency-dividing an input clock signal to generate frequency-divided signals to be supplied to the 1:2 demultiplexers of the respective stages of the tree-like arrangement. The demultiplexer has a plurality of inverting circuits for arbitrarily inverting the frequency-divided clock signals supplied from the clock frequency divider to the respective stages of the main circuit section in units of stages.
    • 解复用器具有通过连接多个1:2解复用器获得的主电路部分,每个解复用器用于将时分复用的信号分配成两部分,以形成树状布置;以及时钟分频器,用于对输入进行分频 产生分频信号以提供给树形布置的各个级的1:2解复用器。 解复用器具有多个反相电路,用于以分段为单位将从时钟分频器提供的分频时钟信号随意地反相到主电路部分的各个级。
    • 10. 发明授权
    • High-speed signal transmission line path structure for semiconductor
integrated circuit devices
    • 半导体集成电路器件的高速信号传输线路结构
    • US5185650A
    • 1993-02-09
    • US860272
    • 1992-04-01
    • Hirotsugu WakimotoMitsuo KonnoKunio Yoshihara
    • Hirotsugu WakimotoMitsuo KonnoKunio Yoshihara
    • H01L23/522
    • H01L23/5225H01L23/5222H01L2924/0002H01L2924/3011
    • A high-speed semiconductor integrated circuit device has a main circuit section formed on a substrate, and a capacitance section formed on the substrate to surround the main circuit section. The capacitance section is made up of two conductive layers, an upper layer being insulatively disposed above a lower layer. These layers are applied with a power source voltage and a ground voltage, respectively. High-speed signal lines insulatively traverse the capacitance section and are connected to the main circuit section. The capacitance section is disconnected in the region where each signal transmission line passes, and defines a micro-strip type signal transmission line path structure. A "ladder"-shaped connection pattern is provided at each disconnected portion of the capacitance section, for electrically connecting a conductive layer arranged on one side of the disconnected portion to the corresponding layer arranged on the other side of the disconnected portion. The ladder-shaped connection pattern includes first and second parallel connection portions which extend at right angles to their corresponding signal transmission line. The impedance of the signal transmission line can be controlled by altering the horizontal pattern of the connection portions.
    • 高速半导体集成电路器件具有形成在基板上的主电路部分和形成在基板上以围绕主电路部分的电容部分。 电容部由两层导电层构成,上层被绝对地设置在下层的上方。 这些层分别被施加有电源电压和接地电压。 高速信号线绝缘穿过电容部分并连接到主电路部分。 在每个信号传输线通过的区域中电容部分断开,并且限定了微带型信号传输线路径结构。 在电容部分的每个断开部分处提供“梯形”形连接图案,用于将布置在断开部分的一侧上的导电层电连接到布置在断开部分的另一侧上的相应层。 梯形连接图案包括与其对应的信号传输线成直角延伸的第一和第二平行连接部分。 可以通过改变连接部分的水平图案来控制信号传输线的阻抗。