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76 条记录 (耗时 0.01 秒)

    Electrical filter
    51.
    发明授权
    Electrical filter 失效
    电动过滤器

    公开(公告)号：US4733205A

    公开(公告)日：1988-03-22

    申请号：US40897

    申请日：1987-04-21

    申请人： John B. Hughes

    发明人： John B. Hughes

    IPC分类号： H03H19/00 ,  H03H11/04 ,  H03H11/12 ,  H03J3/24 ,  H03H7/075 ,  H03H7/06

    CPC分类号： H03H11/04 ,  H03H11/12 ,  H03J3/24

    摘要： A continuous time electrical filter fabricated as an integrated circuit includes capacitors (CF,CN) and resistors (R1,R2). Since capacitors and resistors are difficult to integrate with accurately defined values, a trimming circuit is provided which operates switches (S1-SN) to select appropriate ones of the capacitors (CN) to accurately define the cut-off frequency of the filter. The trimming circuit comprises a capacitor (TC2) which is charged through a resistor TR1 during a first period and which is discharged in incremental steps by capacitor (TC1). The number of incremental steps is counted by a counter (11) and transferred to a register (13). The outputs (S1-SN) of the register (13) control the switches (S1-SN). Alternatively the values of the filter resistors may be adjusted, a convenient procedure being to short out selected portions of the resistors. More than one capacitor or resistor may be adjusted using a single counter and register. The trimming circuit also includes a switch (TS11) which connects the parasitic capacitance (CP1, CP2) of the capacitor (TC1) and an underlying conductive layer (22) and of a dummy resistor and the underlying layer (22) in parallel with the capacitor (TC1). The filter circuit is arranged so that the parasitic capacitance between the resistor (R1) and an underlying conductive layer and that between the capacitors (CF, CN) and the underlying conductive layer are connected in parallel with the fixed capacitor CF.

    摘要翻译： 作为集成电路制造的连续时间滤波器包括电容器（CF，CN）和电阻器（R1，R2）。 由于电容器和电阻器难以与精确定义的值集成，因此提供了一种微调电路，其操作开关（S1-SN）以选择适当的电容器（CN），以精确地定义滤波器的截止频率。 微调电路包括在第一周期期间通过电阻器TR1充电并且通过电容器（TC1）以递增步长放电的电容器（TC2）。 增量步数由计数器（11）计数并传送到寄存器（13）。 寄存器（13）的输出（S1-SN）控制开关（S1-SN）。 或者，可以调节滤波电阻器的值，​​一个方便的过程是短路电阻器的选定部分。 可以使用单个计数器和寄存器调整多个电容器或电阻器。 微调电路还包括将电容器（TC1）的寄生电容（CP1，CP2）和下层导电层（22）以及虚拟电阻器和下层（22）并联的开关（TS11） 电容（TC1）。 滤波器电路被布置成使得电阻器（R1）和下面的导电层之间的寄生电容以及电容器（CF，CN）和下面的导电层之间的寄生电容与固定电容器CF并联连接。

    Tuning circuit arrangement
    52.
    发明授权
    Tuning circuit arrangement 失效
    调谐电路布置

    公开(公告)号：US4055822A

    公开(公告)日：1977-10-25

    申请号：US691024

    申请日：1976-05-28

    申请人： Heinz Rinderle

    发明人： Heinz Rinderle

    IPC分类号： H03H5/12 ,  H03J3/18 ,  H03J3/24

    CPC分类号： H03J3/24 ,  H03J3/185

    摘要： A tuning circuit arrangement comprises one or more tuned circuits whose frequency range is tuned by tuning diodes, means being provided for varying the tuning voltage of the tuning diodes to provide exclusive variation of the tuned circuit capacitance of the tuned circuit.

    摘要翻译： 调谐电路装置包括一个或多个调谐电路，其频率范围由调谐二极管调谐，提供用于改变调谐二极管的调谐电压以提供调谐电路的调谐电路电容的排他变化的装置。

    Six port linear network single wire multi switch transceiver
    58.
    发明授权
    Six port linear network single wire multi switch transceiver 有权
    六端口线性网络单线多开关收发器

    公开(公告)号：US08699983B2

    公开(公告)日：2014-04-15

    申请号：US12450418

    申请日：2008-03-26

    申请人： Lincheng Xiu ,  John James Fitzpatrick

    发明人： Lincheng Xiu ,  John James Fitzpatrick

    IPC分类号： H04B1/18 ,  H03H2/00 ,  H03H3/06 ,  H03H7/01 ,  H03J3/06 ,  H03J3/24

    CPC分类号： H03H2/008 ,  H01Q1/247 ,  H01Q1/50 ,  H03F1/52 ,  H03F3/189 ,  H03H3/06 ,  H03H7/0138 ,  H03J3/06 ,  H03J3/24 ,  H04H40/90 ,  H04N7/20

    摘要： A fluid sensor comprises a sensor housing (12), a sensor package (14), an actuator (16) and a switch (18). The sensor package (14) is disposed within the sensor housing (12) and includes first and second screens and at least one sensing membrane. The sensing membrane is disposed between the first and second screens (36) and is adapted to expand when exposed to a predetermined quantity of a first predetermined fluid. The actuator (16) is disposed proximate the sensor package (14) within the sensor housing (12) and moveable between a first position and a second position through an intermediate position. The switch (18) is disposed proximate the actuator (16) and is operable between closed and open positions. When the actuator (16) is in the second position at least a portion of the actuator (16) depresses the switch (18) to control an-electrical, circuit connected therewith.

    摘要翻译： 流体传感器包括传感器壳体（12），传感器封装（14），致动器（16）和开关（18）。 传感器封装（14）设置在传感器外壳（12）内并且包括第一和第二屏幕以及至少一个传感膜。 感测膜设置在第一和第二筛网（36）之间，并且适于当暴露于预定量的第一预定流体时膨胀。 致动器（16）设置在传感器外壳（12）内靠近传感器封装（14）处，并通过中间位置在第一位置和第二位置之间移动。 开关（18）设置在致动器（16）附近并且可在闭合位置和打开位置之间操作。 当致动器（16）处于第二位置时，致动器（16）的至少一部分按压开关（18）以控制与其连接的电气电路。

    TUNER AND TRANSFORMER FORMED BY PRINTED CIRCUIT BOARD THEREOF
    59.
    发明申请
    TUNER AND TRANSFORMER FORMED BY PRINTED CIRCUIT BOARD THEREOF 有权
    其印刷电路板形成的调谐器和变压器

    公开(公告)号：US20090066448A1

    公开(公告)日：2009-03-12

    申请号：US11939716

    申请日：2007-11-14

    申请人： Wen-Po Ho ,  Shun-Chi Chuang

    发明人： Wen-Po Ho ,  Shun-Chi Chuang

    IPC分类号： H03J3/20 ,  H01F27/28 ,  H03H7/38

    CPC分类号： H03J3/20 ,  H03H7/38 ,  H03J3/06 ,  H03J3/185 ,  H03J3/24

    摘要： A tuner and a transformer formed by printed circuit board thereof are provided. The transformer includes a first winding and a second winding. In which, the first winding forms a first inductor and the second winding forms a second inductor. The transformer is formed by the first and the second inductors, wherein the first winding and the second winding are formed by conducting wires of a printed circuit board.

    摘要翻译： 提供了由其印刷电路板形成的调谐器和变压器。 变压器包括第一绕组和第二绕组。 其中，第一绕组形成第一电感器，第二绕组形成第二电感器。 变压器由第一和第二电感器形成，其中第一绕组和第二绕组由印刷电路板的导线形成。

    High frequency signal receiver
    60.
    发明授权
    High frequency signal receiver 失效
    高频信号接收机

    公开(公告)号：US07373132B2

    公开(公告)日：2008-05-13

    申请号：US10869140

    申请日：2004-06-16

    申请人： Masaru Shimanuki

    发明人： Masaru Shimanuki

    IPC分类号： H04B1/26

    CPC分类号： H03L7/0805 ,  H03D7/165 ,  H03J3/185 ,  H03J3/24 ,  H03L7/18 ,  H04B1/18

    摘要： A high frequency signal receiver can prevent higher harmonics other than a necessary higher harmonic from being subjected to frequency conversion so as to interfere with the base band signal in a broadcasting channel frequency band. The receiver has a high frequency signal receiving circuit 1 that comprises an input circuit 3 to which a high frequency signal (RF signal) subjected to frequency conversion from a 12 GHz band to a 1 to 2 GHz band is input, a mixer circuit 4 adapted to frequency convert the signal of 1 to 2 GHz band output from the input circuit 3 into a base band signal, a local oscillation output circuit section 5 adapted to supply a signal of a frequency band to be mixed with the signal output of the input circuit 3 to the mixer circuit 4 and a PLL circuit section 6 to which the source oscillation output signal from the local oscillation output circuit section 5 is input. The local oscillation output circuit section 5 has an oscillation circuit 51, a higher harmonic output circuit 52 that generates the fourth harmonic of the output signal of the oscillation circuit 51 and a resonance circuit 53. It controls both the resonance frequency of the resonance circuit 53 of the local oscillation output circuit section 5 and the frequency characteristic of the input circuit 3 by means of the control voltage output from the PLL circuit section 6 so as to boost the higher harmonic of an order that corresponds to desired broadcasting channel frequency and attenuate higher harmonics of all other orders that appear in other frequency bands that overlap the broadcasting channel frequency in the input circuit 3.

    摘要翻译： 高频信号接收机可以防止除了必要的高次谐波之外的高次谐波进行频率转换，以便干扰广播信道频带中的基带信号。 接收机具有高频信号接收电路1，该高频信号接收电路1包括输入电路3，经由12GHz频带到1至2GHz频带的频率转换的高频信号（RF信号），混频电路4适配 将从输入电路3输出的1〜2GHz频带的信号频率转换为基带信号，本地振荡输出电路部5适于提供与输入电路的信号输出混合的频带的信号 3和来自本地振荡输出电路部分5的源极振荡输出信号被输入的PLL电路部分6。 本地振荡输出电路部分5具有振荡电路51，产生振荡电路51的输出信号的四次谐波的高次谐波输出电路52和谐振电路53。 它借助于从PLL电路部分6输出的控制电压来控制本地振荡输出电路部分5的谐振电路53的谐振频率和输入电路3的频率特性，以便提高一个 对应于期望的广播频道频率的顺序，并且衰减出现在与输入电路3中的广播频道频率重叠的其他频带中的所有其他订单的高次谐波。