-
公开(公告)号：US20180167242A1
公开(公告)日：2018-06-14
申请号：US15815224
申请日：2017-11-16
申请人： HITACHI METALS, LTD.
发明人： Koji MAEDA , Izumi FUKASAKU , Masaru KOKUBO
CPC分类号： H04L27/04 , H03F1/00 , H03F1/3211 , H03F3/45089 , H03F3/45475 , H03F3/45484 , H03F3/45928 , H03F2200/153 , H03F2200/453 , H04L25/02 , H04L25/03
摘要： There is disclosed a communication cable module including: a conductive cable; a linear amplifier connected to the conductive cable; a detector for detecting presence or absence of an input signal of the conductive cable; a first circuit having a variable-current function; and a second circuit having a common-mode voltage regulating function, wherein when the input signal is not present, the variable-current function of the first circuit reduces an output current of the linear amplifier and the common-mode voltage regulating function of the second circuit regulates an output common-mode voltage of the linear amplifier.
-
公开(公告)号：US20180100909A1
公开(公告)日：2018-04-12
申请号：US15693322
申请日：2017-08-31
发明人： Shinji TAKAKURA , Shigen YASUNAKA
IPC分类号： G01R33/565 , G01R33/56
CPC分类号： G01R33/56518 , G01R33/3852 , G01R33/5608 , G05B13/02 , H03F1/00
摘要： According to one embodiment, a correction device is used for an apparatus including a coil and a conductor in a vicinity of the coil. The correction device corrects an influence of a magnetic field generated by the conductor when a current flows through the coil. The correction device includes a first measuring device, a second measuring device, and a control device. The first measuring device measures a first signal of the coil. The second measuring device measures a second signal of the coil, which is different from the first signal. The control device estimates the influence acting on the coil, based on a difference between the first signal filtered by a first filter and the second signal filtered by a second filter. Furthermore, the control device controls a command signal for flowing the current to the coil, based on an estimation result of the influence.
-
公开(公告)号：US09444404B2
公开(公告)日：2016-09-13
申请号：US13857349
申请日：2013-04-05
发明人： Ion Opris , Hai Tao , Shungneng Lee
CPC分类号： H03F1/00 , G01C19/5776 , G01P9/04 , H02N1/00 , H03F1/34 , H03F3/45475 , H03F3/70 , H03F2200/294
摘要： This document discusses, among other things, apparatus and methods for a front-end charge amplifier. In certain examples, a front-end charge amplifier for a microelectromechanical system (MEMS) device can include a charge amplifier configured to couple to the MEMS device and to provide sense information of a proof mass of the MEMS device, a feedback circuit configured to receive the sense information and to provide feedback to an input of the charge amplifier, and wherein the charge amplifier includes a transfer function having a first pole at a first frequency, a second pole at a second frequency, and one zero at a third frequency.
摘要翻译： 本文件尤其讨论了前端电荷放大器的装置和方法。 在某些示例中，用于微机电系统（MEMS）器件的前端电荷放大器可以包括配置成耦合到MEMS器件并且提供MEMS器件的校验质量的感测信息的电荷放大器，被配置为接收 所述感测信息并且向所述电荷放大器的输入端提供反馈，并且其中所述电荷放大器包括传递函数，所述传递函数具有在第一频率具有第一极点，在第二频率具有第二极点，在第三频率处具有一个零点的传递函数。
-
公开(公告)号：US20150091642A1
公开(公告)日：2015-04-02
申请号：US14066980
申请日：2013-10-30
IPC分类号： H03F1/00
CPC分类号： H03F3/45 , H03F1/00 , H03F1/42 , H03F3/45475 , H03F2200/36 , H03F2200/411 , H03F2200/537
摘要： In an amplifier, a first stage receives a differential input voltage, which is formed by first and second input voltages, and outputs a first differential current in response thereto on first and second lines having respective first and second line voltages. A second stage receives the first and second line voltages and outputs a second differential current in response thereto on third and fourth lines having respective third and fourth line voltages. A transformer includes first and second coils. A first terminal of the first coil is coupled through a first resistor to the first line. A second terminal of the first coil is coupled through a second resistor to the second line. A first terminal of the second coil is coupled through a third resistor to the third line. A second terminal of the second coil is coupled through a fourth resistor to the fourth line.
摘要翻译： 在放大器中，第一级接收由第一和第二输入电压形成的差分输入电压，并且在具有相应的第一和第二线电压的第一和第二线上响应于此输出第一差分电流。 第二级接收第一和第二线电压，并在具有相应的第三和第四线电压的第三和第四线上响应于此输出第二差分电流。 变压器包括第一和第二线圈。 第一线圈的第一端子通过第一电阻器耦合到第一线路。 第一线圈的第二端子通过第二电阻器耦合到第二线路。 第二线圈的第一端子通过第三电阻器耦合到第三线路。 第二线圈的第二端子通过第四电阻器耦合到第四线路。
-
公开(公告)号：US08970299B2
公开(公告)日：2015-03-03
申请号：US13705328
申请日：2012-12-05
发明人： Masatoshi Hase
CPC分类号： H03F3/193 , H03F1/00 , H03F3/191 , H03F3/24 , H03F3/245 , H03F3/60 , H03F3/66 , H03F2200/111 , H03F2200/204 , H03F2200/387 , H03F2200/451 , H03F2200/465 , H04B2001/0408
摘要： The present invention reduces the size of a power detection circuit. An RF power amplifier includes an RF amplifier circuit and a power detection circuit. The RF amplifier circuit subjects an RF input signal having a predetermined frequency band to power amplification and generates an RF amplifier output signal. The input terminal of the power detection circuit is coupled to the output of the RF amplifier circuit. The power detection circuit detects a harmonic component having a harmonic frequency that is a whole number multiple of the frequency of a fundamental wave component of the RF amplifier output signal, and generates at an output terminal a detected signal indicative of the signal level of the fundamental wave component of the RF amplifier output signal. The power detection circuit includes an input circuit, which detects the harmonic component, and an output circuit, which generates the detected signal at the output.
摘要翻译： 本发明减小功率检测电路的尺寸。 RF功率放大器包括RF放大器电路和功率检测电路。 RF放大器电路对具有预定频带的RF输入信号进行功率放大并产生RF放大器输出信号。 功率检测电路的输入端耦合到RF放大器电路的输出端。 功率检测电路检测具有作为RF放大器输出信号的基波分量的频率的整数倍的谐波频率的谐波分量，并且在输出端产生表示基波的信号电平的检测信号 波分量的RF放大器输出信号。 功率检测电路包括检测谐波分量的输入电路和在输出端产生检测信号的输出电路。
-
公开(公告)号：US08854140B2
公开(公告)日：2014-10-07
申请号：US13719619
申请日：2012-12-19
申请人： Raytheon Company
CPC分类号： G05F3/26 , G05F3/16 , G05F3/262 , H03F1/00 , H03F1/301 , H03F3/195 , H03F2200/18 , H03F2200/555
摘要： A current mirror circuit having formed in a semiconductor: a pair of transistors arranged to produce an output current through an output one of the transistors proportional to a reference current fed to an input one of the pair of transistors; a resistor comprising a pair of spaced electrodes in ohmic contact with the semiconductor, one of such pair of electrodes of the resistor being coupled to the input one of the pair of transistors; and circuitry for producing a voltage across the pair of electrodes of the resistor, such circuitry placing the resistor into saturation producing current through a region in the semiconductor between the pair of spaced ohmic contacts, such produced current being fed to the input one of the transistors as the reference current for the current mirror.
摘要翻译： 一种形成在半导体中的电流镜电路：一对晶体管，被布置成通过与馈送到该对晶体管中的一个晶体管的输入端的参考电流成比例的与晶体管的输出端产生输出电流; 电阻器，包括与所述半导体欧姆接触的一对隔开的电极，所述电阻器的所述一对电极中的一个耦合到所述一对晶体管的输入端; 以及用于产生跨过电阻器对的电极两端的电压的电路，这种电路将电阻器置于饱和状态，产生电流通过该对隔开的欧姆接触之间的半导体区域，这样产生的电流被馈送到晶体管的输入端 作为电流镜的参考电流。
-
17.发明申请公开(公告)号：US20140170997A1
公开(公告)日：2014-06-19
申请号：US13719487
申请日：2012-12-19
CPC分类号： H04B1/04 , H03F1/00 , H03F3/195 , H03F3/24 , H03F2200/336
摘要： A power amplifying apparatus is provided. A reference signal generator provides a reference signal having an enabling state and a disabling state. A digital power amplifier generates a current based on the reference signal and an input signal. An output signal of the digital power amplifier is related to the current. When the reference signal is in the enabling state, the current is related to the input signal. When the reference signal is in the disabling state, the current is irrelevant to the input signal. During the enabling state of the reference signal, a data generator provides an output alternating between an in-phase signal and a quadrature-phase signal as the input signal to the digital power amplifier. When the reference signal is in the disabling state, the data generator provides a fixed signal as the input signal to the digital power amplifier.
摘要翻译： 提供功率放大装置。 参考信号发生器提供具有使能状态和禁用状态的参考信号。 数字功率放大器基于参考信号和输入信号产生电流。 数字功率放大器的输出信号与电流有关。 当参考信号处于使能状态时，电流与输入信号相关。 当参考信号处于禁用状态时，电流与输入信号无关。 在参考信号的使能状态期间，数据发生器提供在同相信号和正交相位信号之间交替的输出作为数字功率放大器的输入信号。 当参考信号处于禁用状态时，数据发生器提供固定信号作为数字功率放大器的输入信号。
-
18.发明申请ELECTRONIC RADIO SYSTEM FOR POWER AMPLIFICATION WITH PROTECTION IN TERMS OF STANDING WAVE RATE AND ASSOCIATED METHOD OF PROTECTION 有权用于功率放大的电子无线电系统，用于保持标准波动速率和相关保护方法公开(公告)号：US20140118064A1
公开(公告)日：2014-05-01
申请号：US14127352
申请日：2012-06-19
IPC分类号： H03F1/00
CPC分类号： H03F1/00 , H03F1/52 , H03F2200/393 , H03F2200/451 , H03F2200/462 , H03G3/3042
摘要： An electronic radio system for power amplification of a radiofrequency signal having an electronic circuit having at least one in-service amplifier component, a detector measuring at least one electrical parameter of the in-service amplifier component, having at least the intensity of the electric current supplying the in-service amplifier component, a power attenuator adjusting the output power of the electronic circuit, and a programmable circuit receiving and transmitting commands to control the modules of the radio electronic system. The programmable circuit furthermore includes means for obtaining at least one measurement value relating to the intensity of the electric current supplying said in-service amplifier component of said detector and means for controlling said power attenuator in the case where at least one measurement value obtained exceeds a predetermined threshold value corresponding thereto. The invention also relates to an associated electronic circuit protection method.
摘要翻译： 一种用于对具有至少一个在用放大器部件的电子电路的射频信号进行功率放大的电子无线电系统，测量所述在用放大器部件的至少一个电参数的检测器，至少具有所述电流强度 提供在职放大器部件，调整电子电路的输出功率的功率衰减器，以及可编程电路，其接收和发送用于控制无线电电子系统的模块的命令。 可编程电路还包括用于获得与提供所述检测器的在用放大器部件的电流的强度相关的至少一个测量值的装置，以及在获得的至少一个测量值超过了所述功率衰减器的情况下控制所述功率衰减器的装置 与其对应的预定阈值。 本发明还涉及一种相关的电子电路保护方法。
-
公开(公告)号：US11792574B2
公开(公告)日：2023-10-17
申请号：US17904971
申请日：2020-09-29
申请人： D&M Holdings, Inc.
发明人： Yoshiharu Imahama , Shunichi Tani
摘要： An AV amplifier contains an input unit to input digital data and an operation unit that receives a reproduction instruction. A switching unit switches whether to output the digital data input to a server interface unit or DSP in response to the reproduction instruction. The DSP processes the digital data output to obtain and output a two-channel signal, which the server interface unit transmits by the switching unit to a server and receives an audio signal from the server. An audio reproduction unit reproduces the server interface unit received audio signal and an audio signal output by the DSP. An output unit outputs the reproduced audio signal to each speaker and a control unit controls the switching unit and the server interface unit in response to the reproduction instruction from the user. The control unit controls the switching unit, when two-channel audio reproduction is instructed from the user.
-
公开(公告)号：US11747437B2
公开(公告)日：2023-09-05
申请号：US16947605
申请日：2020-08-10
发明人： Ernst Seler , Ulrich Moeller , Markus Treml
CPC分类号： G01S7/35 , G01S13/34 , H03F1/00 , G01S7/03 , G01S7/032 , G01S7/034 , G01S13/02 , G01S13/931 , G01S2013/0254 , H03F2200/255
摘要： The present disclosure relates to a radar transmitting device, comprising a CMOS transceiver chip configured to provide at least one local oscillator signal at an output of the CMOS transceiver chip, and at least one BiCMOS transmitter chip coupled to the CMOS transceiver chip. The BiCMOS transmitter chip has an input for the local oscillator signal, at least one amplifier coupled to the input, a plurality of outputs for outputting a radar transmission signal on the basis of the local oscillator signal, and a plurality of transmission paths between the input and the plurality of outputs. Each of the transmission paths has a controllable analog phase shifter for controllable beam scanning during emission of the radar transmission signal. Additionally or alternatively, individual transmission paths of the BiCMOS transmitter chip can be selectively activated or deactivated using control signals.
-
-
-
-
-
-
-
-
-
搜索结果
54 条记录 (耗时 0.016 秒)
