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71. 发明授权

US4748351A Power MOSFET gate driver circuit 失效
标题翻译：功率MOSFET栅极驱动电路
公开(公告)号：US4748351A
公开(公告)日：1988-05-31
申请号：US900578
申请日：1986-08-26
申请人： Farhad Barzegar
发明人： Farhad Barzegar
IPC分类号： H03K17/687 , H03K17/16 , H03K17/691 , H03K17/74 , H03K3/33
CPC分类号： H03K17/691
摘要： A MOSFET gate driver circuit reduces the noise susceptibility of a MOSFET switch by utilizing dual drive paths to apply turn-on and turn-off bias signals to the gate of the MOSFET. Drive pulses are coupled to the MOSFET switch via a pulse transformer which has two serially connected secondary windings. Turn-on pulses are coupled by a diode from the first secondary to the MOSFET gate. Turn-off pulses are coupled via the second secondary to a control MOSFET which is turned on by a turn-off pulse and remains on in order to keep the gate of the MOSFET switch to a hold off voltage.
摘要翻译： MOSFET栅极驱动器电路通过利用双驱动路径将MOSFET开关的噪声敏感性降低到MOSFET的栅极，从而将导通和关断偏置信号施加于MOSFET的栅极。驱动脉冲通过具有两个串联连接的次级绕组的脉冲变压器耦合到MOSFET开关。导通脉冲由二极管从第一次级耦合到MOSFET栅极。关断脉冲经由第二次级耦合到控制MOSFET，该控制MOSFET由关断脉冲导通，并保持导通，以便将MOSFET开关的栅极保持为截止电压。

72. 发明授权

US4746821A Constant phase limiting independent of input signal amplitude 失效
标题翻译：恒定相位限制独立于输入信号幅度
公开(公告)号：US4746821A
公开(公告)日：1988-05-24
申请号：US829626
申请日：1986-02-14
申请人： David E. Norton
发明人： David E. Norton
IPC分类号： H03G11/02 , H03K5/08 , H03K3/26 , H03K17/74
CPC分类号： H03G11/02
摘要： A constant phase diode limiter has a pair of oppositely poled diodes in series between the primary of an output transformer and an input terminal. The junction of the diodes is connected to a voltage source through a resistor and inductor. A capacitor having the same value as the capacitance of each of the diodes when nonconducting is connected between the input and the secondary winding of the output transformer. The secondary winding of the output transformer is connected in series between the output terminal and the latter capacitor.
摘要翻译：恒定二极管限制器在输出变压器的初级和输入端之间串联一对相对极化的二极管。二极管的接点通过电阻和电感连接到电压源。当在输出变压器的输入和次级绕组之间连接非导体时，具有与每个二极管的电容相同值的电容器。输出变压器的次级绕组串联在输出端子和后一个电容器之间。

73. 发明授权

US4742249A RF switch with diode network and control latch sharing common element 失效
标题翻译： RF开关具有二极管网络和控制锁存共享元件
公开(公告)号：US4742249A
公开(公告)日：1988-05-03
申请号：US934965
申请日：1986-11-25
申请人： Feroz K. Alpaiwalla , Robert H. Begeman
发明人： Feroz K. Alpaiwalla , Robert H. Begeman
IPC分类号： H03K3/286 , H03K17/74 , H03K17/76 , H03K17/60
CPC分类号： H03K3/286 , H03K17/74 , H03K17/76
摘要： A diode network includes a series branch coupled between two signal ports and a shunt branch coupled between a node in the series branch and ground and connected in parallel with a transistor of a latching circuit that is further coupled to supply forward bias to the shunt branch and reverse bias to the series branch when the transistor is conductive for blocking RF signal flow between the ports. The bias applied to the branches is reversed when the latch transistor is non-conductive thereby enabling RF signal flow between the ports. The transistor provides plural functions of establishing positive feedback for the latch, supplying forward and reverse bias to the shunt and series branches, respectively, and enhancing the attenuation of the shunt branch when conductive.
摘要翻译：二极管网络包括耦合在两个信号端口之间的串联支路和耦合在串联支路中的节点和地之间的并联并与锁存电路的晶体管并联连接的并联支路的并联支路，该晶体管进一步耦合以向分路支路提供正向偏置，当晶体管导通以阻止端口之间的RF信号流动时，反向偏置到串联支路。当锁存晶体管不导通时，施加到分支的偏置反转，从而使得能够在端口之间的RF信号流动。晶体管提供了多种功能，为锁存器建立正反馈，分别向分路和串联支路提供正向和反向偏置，并在导通时增强分路支路的衰减。

74. 发明授权

US4678929A Radio frequency switch 失效
标题翻译：射频开关
公开(公告)号：US4678929A
公开(公告)日：1987-07-07
申请号：US781633
申请日：1985-09-30
申请人： Feroz K. Alpaiwalla , Robert H. Begeman
发明人： Feroz K. Alpaiwalla , Robert H. Begeman
IPC分类号： H03K17/76 , H03K17/567 , H03K17/74 , H04N5/44 , H01H63/36 , H04N5/22
CPC分类号： H03K17/567 , H03K17/74 , Y10T307/74
摘要： In a radio frequency switch, a pair of diodes is coupled in series with polarities opposed between input and output ports. A shunt diode is coupled between the junction point of the pair of diodes and a point of reference potential. A transistor has its main conduction path coupled between the junction point and the point of reference potential. When the switch is to couple a signal between the input and output ports, a control arrangement applies bias tending to forward bias the pair of diodes, to reverse bias the shunt diode and cut off conduction through the transistor. When the switch is not to couple a signal, the control arrangement applies bias tending to reverse bias the pair of diodes, forward bias the shunt diode, and to bias the transistor into a highly conductive condition, thereby further reducing any difference of potential between the junction point and the point of AC reference potential and cooperating with the bias potential tending to forward bias the shunt diode and reverse bias the pair of diodes. In another embodiment, one diode of the pair of diodes is coupled to the junction point by way of a low-pass filter which does not substantially affect a signal to be coupled but exhibits a high series impedance which increases the attenuation when the switch is not to couple a signal.
摘要翻译：在射频开关中，一对二极管与在输入和输出端口之间相对的极性串联耦合。并联二极管耦合在该对二极管的接合点和参考点之间。晶体管的主要导电路径耦合在连接点和参考点之间。当开关将输入和输出端口之间的信号耦合时，控制装置将施加偏置倾向于将一对二极管正向偏置，以反向偏置并联二极管并切断通过晶体管的导通。当开关不耦合信号时，控制装置施加偏置倾向于反向偏置该对二极管，正向偏置并联二极管，并将晶体管偏置为高导电性状态，从而进一步减小结点和交流参考电位点，并与偏置电位协调，倾向于正向偏置并联二极管并反向偏置该对二极管。在另一个实施例中，该对二极管中的一个二极管通过低通滤波器耦合到接合点，低通滤波器基本上不影响待耦合的信号，但是表现出高的串联阻抗，当开关不是时，增加了衰减耦合一个信号。

75. 发明授权

US4659945A Sampling bridge 失效
标题翻译：抽样桥
公开(公告)号：US4659945A
公开(公告)日：1987-04-21
申请号：US718625
申请日：1985-04-01
申请人： Arthur J. Metz
发明人： Arthur J. Metz
IPC分类号： G11C27/02 , H03K17/16 , H03K17/74
CPC分类号： G11C27/024
摘要： A high frequency sample and hold circuit has a sampling diode bridge for coupling an input test signal to be sampled to a holding capacitor when all of the diodes of the bridge are forward biased by an applied strobe signal, thereby charging the capacitor to the input voltage. The diode bridge substantially uncouples the input signal from the holding capacitor when the strobe current direction is reversed such that the holding capacitor retains the charge stored thereon and therefore remains charged to the current sample signal voltage at the instant the strobe current reverses direction. Any holding capacitor charging current generated by the sampling bridge as it returns to equilibrium after strobe current reversal is offset by a holding capacitor charging current of substantially equal magnitude and opposite phase generated by a compensating bridge. The compensating bridge has capacitive coupling characteristics substantially matching those of the sampling bridge and produces the reverse phase charging current either as a result of an applied input signal being of reverse phase to the sampling bridge input signal or as a result of an applied strobe current being of reverse phase to the sampling bridge strobe signal.
摘要翻译：高频采样和保持电路具有一个采样二极管桥，用于将待采样的输入测试信号耦合到保持电容，当桥的所有二极管被施加的选通信号正向偏置时，从而将电容器充电到输入电压。当选通电流方向反向时，二极管桥基本上将保持电容器的输入信号解耦，使得保持电容器保持其上存储的电荷，并且因此在选通电流反向的瞬间保持充电至电流采样信号电压。当选通电流反转之后由采样电桥产生的任何保持电容器充电电流由保持电容充电电流抵消，该保持电容充电电流由补偿桥产生的相位相等。补偿桥具有基本上与采样桥的电容耦合特性，并且由于施加的输入信号与采样桥输入信号相反的结果，或作为施加的选通电流的结果而产生反相充电电流与采样桥选通信号相反。

76. 发明授权

US4482817A Bilateral electronic switch 失效
标题翻译：双边电子开关
公开(公告)号：US4482817A
公开(公告)日：1984-11-13
申请号：US335649
申请日：1981-12-30
申请人： Barrie Brightman , Frank Niertit , Joseph A. Hartman
发明人： Barrie Brightman , Frank Niertit , Joseph A. Hartman
IPC分类号： H03K17/00 , H03K17/74 , H04Q3/52
CPC分类号： H04Q3/521 , H03K17/74 , H03K2217/0036
摘要： A bilateral, low loss, wide band, switching circuit controls the transfer of a signal between two terminals. The balance points of a bilateral current gate connect to the terminals. A rectifier forward-biases the bilateral current gate when a controllable switching element forms a return path from the bilateral current gate to the rectifier. When the rectifier is energized, control circuitry closes the conductive path through the switching element to forward-bias diodes in the bilateral current gate so it operates as a modulator in which the signal to be switched is modulated onto the bias current from the rectifier.
摘要翻译：双向，低损耗，宽带，开关电路控制两个端子之间的信号传输。双向电流门的平衡点连接到端子。当可控开关元件形成从双向电流门到整流器的返回路径时，整流器向前偏置双向电流门。当整流器通电时，控制电路关闭通过开关元件的导电路径，以在双向电流门中正向偏置二极管，使其作为调制器工作，其中要切换的信号被调制到来自整流器的偏置电流上。

77. 发明授权

US4434379A Inverter using low-threshold-voltage field-effect transistors and a switching diode, formed as an integrated circuit 失效
标题翻译：逆变器采用低阈值电压场效应晶体管和开关二极管，形成集成电路
公开(公告)号：US4434379A
公开(公告)日：1984-02-28
申请号：US244873
申请日：1981-03-18
申请人： Georges Bert
发明人： Georges Bert
IPC分类号： H01L29/78 , H03K17/687 , H03K17/74 , H03K19/08 , H03K19/0952 , H03K19/003 , H03K19/094 , H03K19/20
CPC分类号： H03K19/0952
摘要： A logic inverter using field-effect transistors of the "normally off" or "quasi normally off" type with relatively wide tolerance on the threshold voltage. It comprises a first half-stage comprising a field-effect transistor with low threshold voltage, whose source, instead of being connected to ground, is connected to the gate of a second transistor placed in a second half-stage in series with a diode which plays an essential role in the switching of the inverter.
摘要翻译：逻辑逆变器采用具有相对较宽的阈值电压公差的“常态”或“准正常关断”型场效应晶体管。它包括具有低阈值电压的场效应晶体管的第一半级，其源极而不是连接到地，连接到与二极管串联的第二半晶体中的第二晶体管的栅极，二极管在逆变器的切换中起着至关重要的作用。

78. 发明授权

US4417157A Radio frequency switch for coupling an RF source to a load 失效
标题翻译：用于将RF源耦合到负载的射频开关
公开(公告)号：US4417157A
公开(公告)日：1983-11-22
申请号：US238849
申请日：1981-02-27
申请人： David N. Gershberg , Alexander Y. Lee, Jr. , William B. Moore
发明人： David N. Gershberg , Alexander Y. Lee, Jr. , William B. Moore
IPC分类号： G01S13/56 , H03K17/74
CPC分类号： G01S13/56
摘要： A radio frequency switch which has input and output diodes and a quarter length impedance inverter interconnecting the diodes. A switch drive signal is clamped to a predetermined voltage between drive signals so that the impedance with respect to the input source remains substantially constant during the entire switch operation.
摘要翻译：具有输入和输出二极管和互连二极管的四分之一长度阻抗反相器的射频开关。开关驱动信号被钳位到驱动信号之间的预定电压，使得相对于输入源的阻抗在整个开关操作期间保持基本上恒定。

79. 发明授权

US4375038A RMS Converter 失效
标题翻译： RMS转换器
公开(公告)号：US4375038A
公开(公告)日：1983-02-22
申请号：US65691
申请日：1979-08-10
申请人： John B. Crosby
发明人： John B. Crosby
IPC分类号： G01R19/02 , G06G7/163 , G06G7/24 , H03K17/74
CPC分类号： G01R19/02
摘要： A circuit for measuring the root-mean-square (RMS) value of an electrical signal. The output may be linear or logarithmic. The circuit uses devices with logarithmic voltage/ current characteristics (usually transistors), and allows the logarithmic devices to be connected directly together without intervening operational amplifiers. In its simplest form, the invention consists of a rectifier circuit, four transistors and a capacitor.
摘要翻译：用于测量电信号的均方根（RMS）值的电路。输出可以是线性或对数的。该电路使用具有对数电压/电流特性（通常为晶体管）的器件，并允许对数器件直接连接在一起而无需插入运算放大器。在最简单的形式中，本发明由一个整流电路，四个晶体管和一个电容器组成。

80. 发明授权

US4370607A Static high voltage switch usable in a switchable high voltage D.C. generator 失效
标题翻译：静态高压开关可用于可切换的高压直流发电机
公开(公告)号：US4370607A
公开(公告)日：1983-01-25
申请号：US257131
申请日：1981-04-24
申请人： Jacques Dassonville
发明人： Jacques Dassonville
IPC分类号： H02M1/088 , H03K17/74
CPC分类号： H02M1/088
摘要： A static high voltage switch which can be constructed in miniaturized form and having a high degree of reliability, it comprises a bridge of switches, such as thyristors, each controlled by a secondary winding of a transformer whose single primary winding is connected to the secondaries by toroidal cores. Each toroidal core comprises a secondary winding. The primary winding is constituted by a high voltage cable element, which passes axially through the cores.
摘要翻译：一种静态高压开关，其可以以小型化形式并具有高可靠性，其包括诸如晶闸管的开关桥，每个开关桥由变压器的次级绕组控制，其单个初级绕组通过环形铁芯。每个环形芯包括一个次级绕组。初级绕组由轴向穿过芯的高压电缆元件构成。

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