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公开(公告)号：US06449471B1
公开(公告)日：2002-09-10
申请号：US09707942
申请日：2000-11-08
Applicant: Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
Inventor： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
IPC: H03D300
CPC classification number: H04B1/0014 , H03D3/008 , H03D7/02 , H04B1/0032 , H04B1/0039 , H04B1/30 , H04L25/061
Abstract: In a cellular telephone having a receiving circuit of a direct conversion type using an even harmonic orthogonal mixer, high-pass filters for removing a DC offset component are arranged before and after a variable gain amplifier in a base band circuit. The DC offset component occurred in the even harmonic orthogonal mixer is always constant, and the DC offset component occurred in the variable gain amplifier frequently varies so that a cutoff frequency of the front high-pass filter is set to be lower than a cutoff frequency of the rear high-pass filter, and the frequencies are set to achieve a fast transition response.
Abstract translation: 在具有使用偶次谐波正交混频器的直接变换型接收电路的蜂窝电话机中，在基带电路中的可变增益放大器之前和之后配置用于去除DC偏移分量的高通滤波器。 在偶次谐波正交混频器中发生的DC偏移分量总是恒定的，并且在可变增益放大器中发生的DC偏移分量经常变化，使得前部高通滤波器的截止频率设置为低于截止频率 后置高通滤波器，并设置频率以实现快速的转换响应。
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公开(公告)号：US07899142B2
公开(公告)日：2011-03-01
申请号：US12065808
申请日：2006-07-28
Applicant: Ryoji Hayashi , Naohisa Takayama , Mitsuhiro Shimozawa
Inventor： Ryoji Hayashi , Naohisa Takayama , Mitsuhiro Shimozawa
Abstract: A quadrature modulator divides a part of a transmitted signal to generate a cancel signal. A signal comparator compares the amplitude and phase of the cancel signal which is generated by the quadrature modulator with those of a received signal, and outputs signals corresponding to the comparison results to the quadrature modulator. The quadrature modulator generates the cancel signal on the basis of the output signals of the signal comparator, and these components perform feedback control such that the cancel signal has the same amplitude as the leakage signal and is in phase with the leakage signal. A combiner combines the cancel signal with an antiphase cancel signal, which is made to be in opposite phase with the cancel signal outputted from the quadrature modulator, to cancel out the leakage signal.
Abstract translation: 正交调制器分割发送信号的一部分以产生消除信号。 信号比较器将由正交调制器产生的取消信号的幅度和相位与接收信号的幅度和相位进行比较，并将与比较结果相对应的信号输出到正交调制器。 正交调制器基于信号比较器的输出信号产生消除信号，并且这些分量执行反馈控制，使得消除信号具有与泄漏信号相同的幅度并与泄漏信号同相。 组合器将取消信号与反相消除信号组合，使其与从正交调制器输出的消除信号相反，以抵消泄漏信号。
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公开(公告)号：US07054610B1
公开(公告)日：2006-05-30
申请号：US09694675
申请日：2000-10-24
Applicant: Kenji Itoh , Hiroaki Nagano , Takatoshi Katsura , Shinjirou Fukuyama , Mitsuru Mochizuki , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
Inventor： Kenji Itoh , Hiroaki Nagano , Takatoshi Katsura , Shinjirou Fukuyama , Mitsuru Mochizuki , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
IPC: H04B1/30
CPC classification number: H03D7/1408 , H04B1/30
Abstract: In a cellular telephone provided with a receiving circuit of a direct conversion type, a passive low-pass filter is arranged between a mixer for an I-channel and a base band circuit for removing interference waves of or above a channel next to a channel neighboring to the I-channel, and another passive low-pass filter is arranged between a mixer for a Q-channel and the base band circuit for removing interference waves of or above a channel next to a channel neighboring to the Q-channel. Since the low-pass filters for removing the interference waves of or above the channel next to the neighboring channel are of a differential type, the circuit scale can be small, and the power consumption is small. Since the interference waves are removed by the passive low-pass filters and the active low-pass filters, only the desired channel can be reliably received.
Abstract translation: 在设置有直接转换型接收电路的蜂窝电话中，无源低通滤波器被布置在用于I信道的混频器和用于去除邻近信道旁边的信道上的干扰波的基带电路之间 并且另一个无源低通滤波器被布置在用于Q信道的混频器和用于去除邻近于Q信道的信道旁边的信道上的干扰波的基带电路之间。 由于用于除去邻近通道旁边的通道或其上方的干扰波的低通滤波器是差分型，所以电路规模可以小，功耗小。 由于无源低通滤波器和有源低通滤波器去除了干扰波，所以只能可靠地接收期望的信道。
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公开(公告)号：US5787126A
公开(公告)日：1998-07-28
申请号：US597708
申请日：1996-02-07
Applicant: Kenji Itoh , Mitsuhiro Shimozawa , Kenji Kawakami , Noriharu Suematsu , Akio Iida
Inventor： Kenji Itoh , Mitsuhiro Shimozawa , Kenji Kawakami , Noriharu Suematsu , Akio Iida
IPC: H03D1/22 , H03B19/00 , H03C3/00 , H03D3/02 , H03D7/16 , H04B1/02 , H04B1/06 , H04B1/30 , H04L27/20 , H04L27/22 , H04L27/38
Abstract: The detector comprises a first distributor for distributing a signal wave, a 45 degree shifter for shifting a local oscillation, a first even harmonic mixer and a second even harmonic mixer for generating a mixed wave between a double frequency wave of said local oscillation wave and said signal wave. The present invention can be used for increasing the accuracy and downsizing of quadrature mixer used in a receiving transmitting apparatus of a wireless communication system.
Abstract translation: 检测器包括用于分配信号波的第一分配器，用于移位本地振荡的45度移位器，第一偶次谐波混合器和第二偶次谐波混合器，用于产生所述局部振荡波的双频波与所述局部振荡波的双频波之间的混合波 信号波。 本发明可以用于提高在无线通信系统的接收发送装置中使用的正交混频器的精度和小型化。
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公开(公告)号：US20120319746A1
公开(公告)日：2012-12-20
申请号：US13581507
申请日：2011-02-22
Applicant: Ryoji Hayashi , Yoshihito Hirano , Kiyohide Sakai , Mitsuhiro Shimozawa , Akira Inoue , Morishige Hieda , Hiroyuki Joba , Kenichi Tajima , Yoshinori Takahashi , Kazutomi Mori , Tomohiro Akiyama
Inventor： Ryoji Hayashi , Yoshihito Hirano , Kiyohide Sakai , Mitsuhiro Shimozawa , Akira Inoue , Morishige Hieda , Hiroyuki Joba , Kenichi Tajima , Yoshinori Takahashi , Kazutomi Mori , Tomohiro Akiyama
IPC: H03L7/00
CPC classification number: H01Q3/42 , H01Q3/30 , H01Q21/0025 , H04B17/0085
Abstract: An array antenna apparatus in which an SN ratio is improved. Antenna elements having transmission modules, respectively, are arranged in plurality, wherein the plurality of transmission modules respectively have transmission signal generators that each output a transmission intermediate frequency signal, local oscillation signal generators that each output a local oscillation signal, and transmission mixers that each mix the transmission intermediate frequency signal and the local oscillation signal with each other, thereby to carry out frequency conversion to a transmission high frequency signal. A reference signal source inputs a reference signal to the transmission signal generators and the local oscillation signal generators. The transmission intermediate frequency signal and the local oscillation signal are synchronized with each other by the reference signal.
Abstract translation: 提高SN比的阵列天线装置。 分别具有发送模块的天线元件分别配置有多个发送模块，其中，所述多个发送模块分别具有各自输出发送中频信号的发送信号发生器，各自输出本地振荡信号的本地振荡信号发生器，以及各自输出本地振荡信号的发送混频器 将发送中频信号和本地振荡信号彼此混合，从而对发送高频信号进行频率转换。 参考信号源将参考信号输入到发送信号发生器和本地振荡信号发生器。 发送中频信号和本地振荡信号通过参考信号彼此同步。
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Patent Agency Ranking
公开(公告)号：US20080122587A1
公开(公告)日：2008-05-29
申请号：US11792057
申请日：2005-04-14
Applicant: Yoshihiro Akeboshi , Seiichi Saito , Mitsuhiro Shimozawa
Inventor： Yoshihiro Akeboshi , Seiichi Saito , Mitsuhiro Shimozawa
IPC: G05B11/00
CPC classification number: H04B3/56 , H04B2203/5483
Abstract: Provided is a modem apparatus of power line communication using a power line as a transmission path. The modem apparatus includes: an amplifier for amplifying communication signals and outputting a differential signal obtained from a pair of output signals having a phase difference of 180 degrees therebetween; a signal transformer for applying the amplified communication signals to the power lines; and a balance circuit connected at the primary side of the signal transformer, for enhancing circuit balancing. The balance circuit is constituted by a variable element capable of changing an element value, and there is provided a common mode detecting circuit that detects a common mode current flowing through the secondary side of the signal transformer and that changes the element value of the variable element of the balance circuit such that the detected common mode current becomes small.
Abstract translation: 提供了使用电力线作为传输路径的电力线通信的调制解调器装置。 调制解调器装置包括：放大器，用于放大通信信号并输出从具有180度相位差的一对输出信号获得的差分信号; 用于将放大的通信信号施加到电力线的信号变换器; 以及连接在信号变压器初级侧的平衡电路，用于增强电路平衡。 平衡电路由能够改变元件值的可变元件构成，并且提供一种共模检测电路，其检测流过信号变压器的次级侧的共模电流，并且改变可变元件的元件值 使得检测到的共模电流变小。
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公开(公告)号：US06906411B1
公开(公告)日：2005-06-14
申请号：US10048500
申请日：2000-06-29
Applicant: Takatoshi Katsura , Kenji Itoh , Hiroaki Nagano , Youji Isota , Mitsuhiro Shimozawa , Tadashi Takagi , Noriharu Suematsu , Masayoshi Ono , Kenichi Maeda
Inventor： Takatoshi Katsura , Kenji Itoh , Hiroaki Nagano , Youji Isota , Mitsuhiro Shimozawa , Tadashi Takagi , Noriharu Suematsu , Masayoshi Ono , Kenichi Maeda
IPC: H01L23/48 , H01L23/50 , H01L23/538 , H01L23/552 , H01L23/64 , H01L23/66 , H03H3/00 , H03H7/01 , H05K1/00 , H05K1/02 , H05K1/14 , H05K1/18 , H05K9/00 , H01L23/485
CPC classification number: H05K1/0216 , H01L23/50 , H01L23/5383 , H01L23/552 , H01L23/645 , H01L2924/0002 , H01L2924/15312 , H01L2924/3011 , H03H3/00 , H03H7/01 , H05K1/0237 , H05K1/0298 , H05K1/141 , H05K9/0039 , H05K2201/0715 , H05K2201/09254 , H05K2201/09972 , H01L2924/00
Abstract: In a multi-layer substrate module receiving from an external earth node supply of a reference potential for grounding, a plurality of ground lines are provided respectively corresponding to a plurality of internal circuits. Moreover, a common node for coupling the ground lines is provided in an insulating layer of the multi-layer substrate module. The common node is electrically coupled to the earth node through a ground pin terminal shared by the plurality of internal circuits. Preferably, the common node is provided in the lowest insulating layer of the multi-layer substrate module. Thus, parasitic inductance of the portion through which an earth current flows, that is, the portion common to the plurality of internal circuits, can be suppressed with a small number of ground pin terminals. Accordingly, the inflow phenomenon of the earth current between the plurality of internal circuits is prevented, enabling stable operation.
Abstract translation: 在从外部接地节点电源接收用于接地的参考电位的多层基板模块中，分别对应于多个内部电路设置多个接地线。 此外，用于耦合接地线的公共节点设置在多层基板模块的绝缘层中。 公共节点通过由多个内部电路共享的接地引脚端子电耦合到接地节点。 优选地，公共节点设置在多层衬底模块的最低绝缘层中。 因此，可以用少量的接地引脚端子来抑制接地电流流过的部分的寄生电感，即多个内部电路公用的部分。 因此，防止了多个内部电路之间的接地电流的流入现象，从而能够稳定地工作。
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公开(公告)号：US20090232260A1
公开(公告)日：2009-09-17
申请号：US12065808
申请日：2006-07-28
Applicant: Ryoji Hayashi , Naohisa Takayama , Mitsuhiro Shimozawa
Inventor： Ryoji Hayashi , Naohisa Takayama , Mitsuhiro Shimozawa
IPC: H03D1/04
Abstract: A quadrature modulator divides a part of a transmitted signal to generate a cancel signal. A signal comparator compares the amplitude and phase of the cancel signal which is generated by the quadrature modulator with those of a received signal, and outputs signals corresponding to the comparison results to the quadrature modulator. The quadrature modulator generates the cancel signal on the basis of the output signals of the signal comparator, and these components perform feedback control such that the cancel signal has the same amplitude as the leakage signal and is in phase with the leakage signal. A combiner combines the cancel signal with an antiphase cancel signal, which is made to be in opposite phase with the cancel signal outputted from the quadrature modulator, to cancel out the leakage signal.
Abstract translation: 正交调制器分割发送信号的一部分以产生消除信号。 信号比较器将由正交调制器产生的取消信号的幅度和相位与接收信号的幅度和相位进行比较，并将与比较结果相对应的信号输出到正交调制器。 正交调制器基于信号比较器的输出信号产生消除信号，并且这些分量执行反馈控制，使得消除信号具有与泄漏信号相同的幅度并与泄漏信号同相。 组合器将取消信号与反相消除信号组合，使其与从正交调制器输出的消除信号相反，以抵消泄漏信号。
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公开(公告)号：US08914068B2
公开(公告)日：2014-12-16
申请号：US13581507
申请日：2011-02-22
Applicant: Ryoji Hayashi , Yoshihito Hirano , Kiyohide Sakai , Mitsuhiro Shimozawa , Akira Inoue , Morishige Hieda , Hiroyuki Joba , Kenichi Tajima , Yoshinori Takahashi , Kazutomi Mori , Tomohiro Akiyama
Inventor： Ryoji Hayashi , Yoshihito Hirano , Kiyohide Sakai , Mitsuhiro Shimozawa , Akira Inoue , Morishige Hieda , Hiroyuki Joba , Kenichi Tajima , Yoshinori Takahashi , Kazutomi Mori , Tomohiro Akiyama
CPC classification number: H01Q3/42 , H01Q3/30 , H01Q21/0025 , H04B17/0085
Abstract: An array antenna apparatus in which an SN ratio is improved. Antenna elements having transmission modules, respectively, are arranged in plurality, wherein the plurality of transmission modules respectively have transmission signal generators that each output a transmission intermediate frequency signal, local oscillation signal generators that each output a local oscillation signal, and transmission mixers that each mix the transmission intermediate frequency signal and the local oscillation signal with each other, thereby to carry out frequency conversion to a transmission high frequency signal. A reference signal source inputs a reference signal to the transmission signal generators and the local oscillation signal generators. The transmission intermediate frequency signal and the local oscillation signal are synchronized with each other by the reference signal.
Abstract translation: 提高SN比的阵列天线装置。 分别具有发送模块的天线元件分别配置有多个发送模块，其中，所述多个发送模块分别具有各自输出发送中频信号的发送信号发生器，各自输出本地振荡信号的本地振荡信号发生器以及各自输出本地振荡信号的发送混频器 将发送中频信号和本地振荡信号彼此混合，从而对发送高频信号进行频率转换。 参考信号源将参考信号输入到发送信号发生器和本地振荡信号发生器。 发送中频信号和本地振荡信号通过参考信号彼此同步。
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公开(公告)号：US08774737B2
公开(公告)日：2014-07-08
申请号：US13582237
申请日：2010-03-04
Applicant: Kazutomi Mori , Hiroyuki Joba , Yoshinori Takahashi , Tomohiro Akiyama , Ryoji Hayashi , Mitsuhiro Shimozawa , Akira Inoue , Morishige Hieda , Kiyohide Sakai , Yoshihito Hirano
Inventor： Kazutomi Mori , Hiroyuki Joba , Yoshinori Takahashi , Tomohiro Akiyama , Ryoji Hayashi , Mitsuhiro Shimozawa , Akira Inoue , Morishige Hieda , Kiyohide Sakai , Yoshihito Hirano
CPC classification number: H03F1/3247 , H01Q3/26 , H01Q3/267 , H03F1/02 , H03F1/0211 , H03F1/0227 , H03F1/0238 , H03F3/24 , H03F2200/211 , H03F2200/411 , H03F2200/451 , H03G3/004 , H03G3/3042 , H04B1/0483 , H04B17/13 , H04B2001/045
Abstract: A transmission module including a power supply voltage control unit that sets a power supply voltage to the high frequency amplifier in a variable manner, and a control circuit that controls an amplitude control unit, a phase control unit and the power supply voltage control unit. The control circuit and the power supply voltage control unit control the power supply voltage in accordance with an output power of the high frequency amplifier. The transmission module can carry out not only phase control but also amplitude control in a continuous manner, while suppressing amplitude and phase variation, and a high frequency amplifier in the transmission module is made highly efficient. In addition, a large directional gain, a low side lobe level and a low power consumption are achieved, as a phased array antenna apparatus using a transmission module.
Abstract translation: 一种传输模块，包括以可变方式设置高频放大器的电源电压的电源电压控制单元和控制振幅控制单元，相位控制单元和电源电压控制单元的控制电路。 控制电路和电源电压控制单元根据高频放大器的输出功率来控制电源电压。 传输模块不仅可以在抑制幅度和相位变化的同时进行相位控制，而且可以连续进行幅度控制，并且使传输模块中的高频放大器高效。 此外，作为使用传输模块的相控阵天线装置，实现了大的方向增益，低旁瓣电平和低功耗。
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