公开(公告)号：US10782329B2

公开(公告)日：2020-09-22

申请号：US15765556

申请日：2017-09-27

申请人： MARCdevices Co., Ltd.

发明人： Koichi Hirama

IPC分类号： G01R25/00 ,  H04L27/00

摘要： A parallel phase shift circuit is configured to perform a phase shift process in parallel on an input signal pair including a first I signal orthogonal to a first Q signal, in accordance with a phase difference among a set of n multi-phase separation frequency signal pairs including a set of second I signals orthogonal to a set of second Q signals, to generate a set of n phase-shifted orthogonal signal pairs including a set of third I signals orthogonal to a set of third Q signals; and a phase discrete continuous measurement circuit configured to, based on the n phase-shifted orthogonal signal pairs from the parallel phase shift circuit, generate a set of discrete signals being n discrete values and generate a set of continuous tangent signals being a set of a desired number of signals interpolating the set of discrete signals.

公开(公告)号：US09401695B2

公开(公告)日：2016-07-26

申请号：US14766582

申请日：2013-06-25

申请人： MARCDEVICES CO., LTD.

发明人： Koichi Hirama

IPC分类号： H03H11/40 ,  H03H11/46

CPC分类号： H03H11/40 ,  H03H11/46

摘要： An immittance conversion circuit includes a first terminal and a second terminal, and includes: a conversion target circuit configured to amplify or attenuate a signal with desired frequency and gain characteristics, and output the resultant signal; a difference signal detection circuit configured to supply the input terminal of the conversion target circuit with a signal of a difference between signals generated at the first and second terminals; an immittance conversion drive circuit configured to perform differential output processing to generate a voltage of a difference between a correction voltage and the signal outputted from the conversion target circuit, and output feedback signals to an immittance conversion generation circuit; and the immittance conversion generation circuit having an immittance conversion generation action to generate, at each of the first and second terminals, a signal of currents or voltages of the corresponding inputted feedback signal and the signal inputted to the first or second terminal. A signal of a difference between the signals generated at the first and second terminals is inputted to the immittance conversion drive circuit as the correction voltage.

摘要翻译： 导纳转换电路包括第一端子和第二端子，并且包括：转换目标电路，被配置为放大或衰减具有期望的频率和增益特性的信号，并输出所得到的信号; 差分信号检测电路，被配置为向所述转换目标电路的输入端提供在所述第一和第二端子处产生的信号之间的差的信号; 导纳转换驱动电路，被配置为执行差分输出处理以产生校正电压与从转换目标电路输出的信号之间的差的电压，并将反馈信号输出到导纳转换生成电路; 并且所述导纳转换生成电路具有导纳转换生成动作，以在所述第一和第二终端中的每一个处产生相应的输入反馈信号的电流或电压的信号以及输入到所述第一或第二终端的信号。 将在第一和第二端子处产生的信号之间的差的信号作为校正电压被输入到导纳转换驱动电路。