-
公开(公告)号：US20180262181A1
公开(公告)日：2018-09-13
申请号：US15981722
申请日：2018-05-16
申请人： pSemi Corporation
发明人： Fleming Lam
CPC分类号： H03H11/245 , H01P1/22 , H03H7/24 , H03H7/251
摘要： Circuits and methods for eliminating or mitigating the amount of temperature-dependent variation in the relative attenuation of a multi-valued digital step attenuator (DSA) by using resistive components having temperature-dependent resistance values that compensate for or offset changes in the temperature-dependent ON resistance (RON) of the switches within the DSA. In some embodiments, DSA attenuator cell switches are fabricated to have positive first-order resistance temperature (FORT) coefficients, while temperature-compensating series attenuation resistances are fabricated as a positive FORT coefficient resistor and temperature-compensating shunt resistances are fabricated as either a negative FORT coefficient resistor or a combination of a negative FORT coefficient resistor in parallel with a positive FORT coefficient resistor.
-
公开(公告)号：US20180013188A1
公开(公告)日：2018-01-11
申请号：US15599185
申请日：2017-05-18
CPC分类号： H01P5/18 , H01F38/14 , H01L23/645 , H03F1/0261 , H03F1/56 , H03F3/195 , H03H7/09 , H03H7/24 , H03H7/46
摘要： Coupling apparatuses, circuits having such coupling apparatuses and corresponding methods are provided that involve a first and a second signal being coupled out from an out-coupling circuit part and being separately coupled into first and second circuit pmts. The use of different coupling mechanisms effects signal separation in this case. In particular, one of the signals can be coupled as a differential signal and the other as a common mode signal.
-
公开(公告)号：US20170359052A1
公开(公告)日：2017-12-14
申请号：US15180442
申请日：2016-06-13
发明人： Howard Cam Luong , Zhiqiang Huang
CPC分类号： H03J3/185 , H03H7/004 , H03H7/24 , H03K3/36 , H03L7/0991 , H03L2207/50
摘要： An exponentially-scaling switched impedance circuit includes: two or more impedance scaling circuits, wherein each impedance scaling circuit comprises: an input port; an output port; and a switched impedance circuit connected in parallel to the output port. Each impedance scaling circuit is configured to provide an effective impedance at the input port corresponding to a scaled-down version of the exponentially-scaling switched impedance circuit. The two or more impedance scaling circuits are connected in a cascade such that an input of an impedance scaling circuit is connected to an output of a previous impedance scaling circuit and/or an output of the impedance scaling circuit is connected to an input of a next impedance scaling circuit.
-
公开(公告)号：US09787286B2
公开(公告)日：2017-10-10
申请号：US15382435
申请日：2016-12-16
发明人： Vikas Sharma
CPC分类号： H03H11/245 , H01P1/227 , H03H7/24 , H03H11/28 , H03K5/08 , H03K17/687
摘要： A wideband RF attenuator circuit that has a reduced impact on the phase of an applied signal when switched between an attenuation state and a non-attenuating reference or bypass state. A low phase shift attenuation at high RF frequencies can be achieved by utilizing a switched signal path attenuator topology with multiple distributed transmission line elements per signal path to provide broadband operation, distribute parasitic influences, and improve isolation to achieve higher attenuation at higher frequencies while still maintaining low phase shift operational characteristics. In an alternative embodiment, extension to even higher frequencies can be achieved by utilizing a quarter-wave transmission line element at the signal interfaces of each signal path, thereby improving insertion loss and power handling.
-
公开(公告)号：US20170237412A1
公开(公告)日：2017-08-17
申请号：US15382435
申请日：2016-12-16
发明人： Vikas Sharma
CPC分类号： H03H11/245 , H01P1/227 , H03H7/24 , H03H11/28 , H03K5/08 , H03K17/687
摘要： A wideband RF attenuator circuit that has a reduced impact on the phase of an applied signal when switched between an attenuation state and a non-attenuating reference or bypass state. A low phase shift attenuation at high RF frequencies can be achieved by utilizing a switched signal path attenuator topology with multiple distributed transmission line elements per signal path to provide broadband operation, distribute parasitic influences, and improve isolation to achieve higher attenuation at higher frequencies while still maintaining low phase shift operational characteristics. In an alternative embodiment, extension to even higher frequencies can be achieved by utilizing a quarter-wave transmission line element at the signal interfaces of each signal path, thereby improving insertion loss and power handling.
-
公开(公告)号：US09479200B2
公开(公告)日：2016-10-25
申请号：US14192732
申请日：2014-02-27
发明人： Abdolreza Karbassi , Tamir E. Moran
CPC分类号： H04B1/0057 , H03H7/24 , H03H2007/006
摘要： Systems and methods for partitioning the frequency spectrum for use in a plurality of function circuits, including step attenuation, phase modulation, and gain amplification functional circuits. A system may include a programmable step attenuator including selection circuitry and functional circuitry. First selection circuitry may include a plurality of outputs and may receive a signal and selectively provide the signal to an output based on the signal's frequency. First circuitry may be coupled to one of the outputs and may operate as a first step attenuator for signals in a first portion of the frequency spectrum. Second circuitry may be coupled to another output and operate as a second step attenuator for signals in a second portion of the frequency spectrum. Second selection circuitry may be coupled to the first and second circuitry and may provide a step attenuated signal from the first or second portion of the frequency spectrum.
摘要翻译： 用于分割用于多个功能电路中的频谱的系统和方法，包括步进衰减，相位调制和增益放大功能电路。 系统可以包括包括选择电路和功能电路的可编程步进衰减器。 第一选择电路可以包括多个输出并且可以接收信号并且基于信号的频率选择性地将信号提供给输出。 第一电路可以耦合到输出之一并且可以作为用于频谱的第一部分中的信号的第一级衰减器来操作。 第二电路可以耦合到另一个输出，并作为用于频谱的第二部分中的信号的第二阶衰减器来操作。 第二选择电路可以耦合到第一和第二电路，并且可以从频谱的第一或第二部分提供步进衰减信号。
-
公开(公告)号：US09350315B1
公开(公告)日：2016-05-24
申请号：US14451378
申请日：2014-08-04
CPC分类号： H03H1/0007 , H01F27/28 , H01F27/40 , H03H7/24 , H03H7/425 , H03H7/427 , H04B3/56 , H04B2203/5491
摘要： An apparatus attenuates pseudo-differential signals on a plurality of conductors. The apparatus may also attenuate one or both of differential signals and common mode signals on the conductors. The signals may be Power Line Communication (PLC) signals. The apparatus includes a choke including a plurality of mutually coupled windings. The windings of the choke include a first winding and a plurality of second windings, the first winding having a number of turns equal to the sum of the number of turns of the second windings. Each of the second windings may have a substantial leakage inductance. The apparatus may further include one or more capacitors electrically coupled between windings of the choke.
摘要翻译： 一种装置衰减多个导体上的伪差分信号。 该装置还可以衰减导体上的差分信号和共模信号中的一个或两者。 信号可能是电力线通信（PLC）信号。 该装置包括包括多个相互耦合的绕组的扼流圈。 扼流圈的绕组包括第一绕组和多个第二绕组，第一绕组具有等于第二绕组匝数之和的匝数。 每个第二绕组可以具有大的漏电感。 该装置还可以包括电耦合在扼流圈的绕组之间的一个或多个电容器。
-
78.发明申请公开(公告)号：US20160079970A1
公开(公告)日：2016-03-17
申请号：US14484129
申请日：2014-09-11
申请人： NXP B.V.
发明人： Arnoud van der Wel
IPC分类号： H03K5/02
CPC分类号： H03K5/02 , H01C13/02 , H01L23/647 , H01L27/0802 , H01L2924/0002 , H03H7/24 , H03H7/425 , H01L2924/00
摘要： A resistive divider circuit for differential signaling is disclosed. The resistive divider includes a first branch and a second branch and each branch has an input, a first resistive component comprised of a number of unit resistors, a second resistive component comprised of a number of unit resistors, and an output connected between the first resistive component and the second resistive component, the output forming a differential mode output. The first resistive component and the second resistive component are comprised of an equal number of unit resistors.
摘要翻译： 公开了用于差分信号的电阻分压电路。 电阻分压器包括第一分支和第二分支，每个分支具有输入，由多个单位电阻组成的第一电阻分量，由多个单位电阻组成的第二电阻分量，以及连接在第一电阻 分量和第二电阻分量，输出形成差模输出。 第一电阻分量和第二电阻分量由等量的单位电阻组成。
-
79.发明申请Memory Interface Receivers Having Pulsed Control Of Input Signal Attenuation Networks 有权具有脉冲控制输入信号衰减网络的存储器接口接收器公开(公告)号：US20160049922A1
公开(公告)日：2016-02-18
申请号：US14457508
申请日：2014-08-12
IPC分类号： H03H11/24 , H03K5/08 , G11C11/4093
CPC分类号： H03H11/24 , G11C7/1084 , G11C11/4093 , H03H7/24 , H03K5/084
摘要： Receivers for memory interfaces and related methods are disclosed having pulsed control of input signal attenuation networks. Embodiments include a DC common mode attenuation network, an AC coupling network, a pulse generator, and an amplifier. The pulse generator receives the output of the amplifier and generates a pulse signal that in part controls the operation of the attenuation network. The attenuation network generates an attenuated signal having reduced DC common mode levels. This attenuated signal is combined with an AC component passed by the AC coupling network. The resulting combined signal is detected and amplified by the amplifier. Different voltage domains are used for the attenuation network and the AC coupling network as compared to the amplifier and the pulse generator. By attenuating DC common mode levels while maintaining AC signal levels, the disclosed embodiments allow for proper signal detection over a wide range of DC common mode levels.
摘要翻译： 公开了用于存储器接口和相关方法的接收机，其具有输入信号衰减网络的脉冲控制。 实施例包括DC共模衰减网络，AC耦合网络，脉冲发生器和放大器。 脉冲发生器接收放大器的输出并产生部分地控制衰减网络的操作的脉冲信号。 衰减网络产生具有降低的DC共模电平的衰减信号。 该衰减信号与由AC耦合网络传递的AC分量组合。 所得到的组合信号由放大器检测和放大。 与放大器和脉冲发生器相比，不同的电压域用于衰减网络和AC耦合网络。 通过在维持AC信号电平的同时衰减DC共模电平，所公开的实施例允许在宽范围的DC共模电平上进行适当的信号检测。
-
80.发明申请POWER SUPPLIES HAVING MULTI-TAP VOLTAGE ATTENUATORS AND METHODS OF POWER SUPPLY ASSEMBLY 有权具有多节点电压衰减器的电源和电源组装方法公开(公告)号：US20150381066A1
公开(公告)日：2015-12-31
申请号：US14767112
申请日：2014-02-21
发明人： Edward Alan Cheesman
CPC分类号： H02M3/33561 , H02M1/08 , H02M2001/0003 , H03H7/24 , H05K3/36
摘要： A printed circuit board of a power supply has a multi-tap voltage attenuator mounted thereon that may provide a selectable plurality of attenuated voltages based on a received voltage. A power supply may include two or more of the same printed circuit boards to attenuate different input and output power supply voltages to one or more desired lower voltages. The attenuated voltages may be input to, e.g., a controller of the power supply to monitor and, when necessary, adjust one or more parameters of the output power supply voltage. The selectable plurality of attenuated voltages allows substantially identical printed circuit boards to be used in the same and/or different power supplies for attenuating different voltages. Methods of assembling power supplies are also provided, as are other aspects.
摘要翻译： 电源的印刷电路板具有安装在其上的多抽头电压衰减器，其可以基于接收的电压提供可选择的多个衰减电压。 电源可以包括两个或更多个相同的印刷电路板，以将不同的输入和输出电源电压衰减到一个或多个所需的较低电压。 衰减的电压可以输入到例如电源的控制器以监视，并且在必要时调整输出电源电压的一个或多个参数。 可选择的多个衰减电压允许在相同和/或不同的电源中使用基本相同的印刷电路板来衰减不同的电压。 还提供了组装电源的方法，以及其他方面。
-
-
-
-
-
-
-
-
-
搜索结果
385 条记录 (耗时 0.024 秒)
