公开(公告)号：US20100203851A1

公开(公告)日：2010-08-12

申请号：US12553180

申请日：2009-09-03

申请人： Hiroaki Ishihara ,  Masahiro Hosoya ,  Kohei Onizuka ,  Shoji Otaka ,  Osamu Watanabe

发明人： Hiroaki Ishihara ,  Masahiro Hosoya ,  Kohei Onizuka ,  Shoji Otaka ,  Osamu Watanabe

IPC分类号： H04B1/02

CPC分类号： H04B1/0475 ,  H03F1/3247 ,  H03F1/3252 ,  H03F1/34 ,  H03F3/19 ,  H03F3/24 ,  H03F2200/204 ,  H03F2200/336 ,  H03F2200/411 ,  H03F2200/451 ,  H04B2001/0433

摘要： A wireless transmission device includes an adding/subtracting unit configured to subtract a second signal and a third signal from a first signal to generate the second signal; a modulating unit configured to modulate the second signal to generate a fourth signal; a demodulating unit configured to demodulate the fourth signal to generate the third signal; and a transmitting unit configured to transmit the fourth signal.

摘要翻译： 无线传输装置包括：加法/减法单元，被配置为从第一信号中减去第二信号和第三信号以产生第二信号; 调制单元，被配置为调制所述第二信号以产生第四信号; 解调单元，被配置为对所述第四信号进行解调以产生所述第三信号; 以及发送单元，被配置为发送所述第四信号。

公开(公告)号：US07911281B2

公开(公告)日：2011-03-22

申请号：US12558771

申请日：2009-09-14

申请人： Hiroaki Hoshino ,  Osamu Watanabe ,  Shoji Otaka ,  Tetsuro Itakura

发明人： Hiroaki Hoshino ,  Osamu Watanabe ,  Shoji Otaka ,  Tetsuro Itakura

IPC分类号： H03B5/12 ,  H03B27/00 ,  H03L7/18

CPC分类号： H03L7/099 ,  H03L7/0891 ,  H03L7/18

摘要： A PLL circuit includes: a voltage-controlled oscillator including: a first oscillating portion configured to generate first differential signals; and a second oscillating portion configured to generate second differential signals with a phase difference of 90 degrees from the first differential signals; a phase detector configured to compare phases of third differential signals based on the first and second differential signals with a phase of a reference signal; and a loop filter configured to generate a control voltage for controlling the voltage-controlled oscillator based on a result of the comparison in the phase detector.

摘要翻译： PLL电路包括：压控振荡器，包括：第一振荡部分，被配置为产生第一差分信号; 以及第二振荡部分，被配置为产生与所述第一差分信号相差90度的第二差分信号; 相位检测器，被配置为将基于第一和第二差分信号的第三差分信号的相位与参考信号的相位进行比较; 以及环路滤波器，其被配置为基于相位检测器中的比较结果产生用于控制压控振荡器的控制电压。

公开(公告)号：US07876162B2

公开(公告)日：2011-01-25

申请号：US12558807

申请日：2009-09-14

申请人： Kohei Onizuka ,  Masahiro Hosoya ,  Hiroaki Ishihara ,  Shoji Otaka ,  Osamu Watanabe

发明人： Kohei Onizuka ,  Masahiro Hosoya ,  Hiroaki Ishihara ,  Shoji Otaka ,  Osamu Watanabe

IPC分类号： H03F3/14

CPC分类号： H03F3/602 ,  H03F3/26 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2200/543

摘要： An amplifier includes: a substrate; first to fourth amplifying units arranged on the substrate and each having first and second terminals, and each amplifying first and second signals to generate first and second amplified signals; a first inductive line arranged on the substrate, connecting the first terminal of the first amplifying unit and the first terminal of the second amplifying unit, and having a linear portion and a bending portion; a second inductive line arranged on the substrate, connecting the second terminal of the second amplifying unit and the first terminal of the third amplifying unit, and having a linear portion and a bending portion; a third inductive line arranged on the substrate, connecting the second terminal of the third amplifying unit and the first terminal of the fourth amplifying unit, and having a linear portion and a bending portion; a fourth inductive line arranged on the substrate, connecting the second terminal of the fourth amplifying unit and the second terminal of the first amplifying unit, and having a linear portion and a bending portion; and a fifth inductive line which establishes magnetic field coupling with the first to fourth inductive lines, and has third and fourth terminals, combines the plurality of the first amplified signals amplified to output the first combined signal from the third terminal, and combines the plurality of the second amplified signals to output the second combined signal from the fourth terminal.

摘要翻译： 放大器包括：基板; 布置在基板上的第一至第四放大单元，每个具有第一和第二端子，并且每个放大第一和第二信号以产生第一和第二放大信号; 布置在所述基板上的第一感应线，连接所述第一放大单元的第一端子和所述第二放大单元的所述第一端子，并且具有直线部分和弯曲部分; 布置在基板上的第二感应线，连接第二放大单元的第二端子和第三放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第三感应线，连接第三放大单元的第二端子和第四放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第四感应线，连接第四放大单元的第二端子和第一放大单元的第二端子，并具有直线部分和弯曲部分; 以及第五感应线，其与第一至第四感应线建立磁场耦合，并且具有第三和第四端子，将被放大的多个第一放大信号组合以输出来自第三端子的第一组合信号，并将多个 第二放大信号以从第四终端输出第二组合信号。

公开(公告)号：US20100073222A1

公开(公告)日：2010-03-25

申请号：US12407817

申请日：2009-03-20

申请人： Toshiya Mitomo ,  Hiroaki Hoshino ,  Osamu Watanabe ,  Shoji Otaka

发明人： Toshiya Mitomo ,  Hiroaki Hoshino ,  Osamu Watanabe ,  Shoji Otaka

IPC分类号： G01S13/00

CPC分类号： G01S13/345 ,  G01S7/35

摘要： An FMCW signal generator includes a frequency divider to divide the FMCW signal at a preset dividing ratio, a reference signal generator to periodically generate a reference signal at a second time interval not less than a loop time constant set for a PLL, a frequency of the reference signal being discretely swept within a range of fc±Δf (fc is a center frequency, and Δf is a frequency sweep width) at a first time interval not more than the loop time constant, a comparison unit to compare the frequency divided signal with the reference signal to generate a comparison result signal corresponding to a phase difference between the frequency divided signal and the reference signal, a loop filter to filter the comparison result signal to generate a control voltage signal, and a VCO to have an oscillation frequency thereof controlled by the control voltage signal.

摘要翻译： FMCW信号发生器包括分频器，用于以预设的分频比对FMCW信号进行分频，参考信号发生器以不小于为PLL设置的环路时间常数的第二时间间隔周期性地产生参考信号，频率为 参考信号在fc±＆Dgr的范围内离散地扫描; f（fc是中心频率，并且＆Dgr; f是频率扫描宽度）在不大于循环时间常数的第一时间间隔，比较单元 具有参考信号的频率分频信号，以产生对应于分频信号和参考信号之间的相位差的比较结果信号;环路滤波器，用于对比较结果信号进行滤波以产生控制电压信号;以及VCO， 振荡频率由控制电压信号控制。

公开(公告)号：US20080238495A1

公开(公告)日：2008-10-02

申请号：US12051088

申请日：2008-03-19

申请人： RYOICHI TACHIBANA ,  Shoji Otaka ,  Osamu Watanabe ,  Hiroaki Hoshino

发明人： RYOICHI TACHIBANA ,  Shoji Otaka ,  Osamu Watanabe ,  Hiroaki Hoshino

IPC分类号： H03B21/00

CPC分类号： H03L7/113 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1253 ,  H03L7/0891 ,  H03L7/099 ,  H03L7/18

摘要： A frequency synthesizer includes a voltage-controlled oscillator to output an oscillation signal of a oscillating frequency in correspondence with a oscillation controlling voltage that is input to the oscillator, a first frequency-divider to subject the oscillation signal to frequency-division and output a first frequency signal, a second frequency-divider to subject the first frequency signal to frequency-division and output a second frequency signal, a controlling voltage generator to generate the oscillation controlling voltage corresponding to a phase difference between a reference clock signal and the second frequency signal, a frequency detector to detect a frequency difference between the second frequency signal and the reference clock signal, and a controller which controls a free-running frequency of the first frequency divider to minimize the frequency difference.

摘要翻译： 频率合成器包括：压控振荡器，用于根据输入到振荡器的振荡控制电压输出振荡频率的振荡信号;第一分频器，对振荡信号进行分频并输出第一 频率信号，第二分频器，用于对第一频率信号进行分频并输出第二频率信号;控制电压发生器，用于产生对应于参考时钟信号和第二频率信号之间的相位差的振荡控制电压 用于检测第二频率信号和参考时钟信号之间的频率差的频率检测器，以及控制第一分频器的自由运行频率以最小化频率差的控制器。

公开(公告)号：US06563383B1

公开(公告)日：2003-05-13

申请号：US09696972

申请日：2000-10-27

申请人： Shoji Otaka ,  Osamu Watanabe

发明人： Shoji Otaka ,  Osamu Watanabe

IPC分类号： H03F345

CPC分类号： H03G3/3042 ,  H03F3/45183 ,  H03F2200/294 ,  H03F2200/372 ,  H03G3/04 ,  H03G7/06

摘要： A variable gain circuit includes a variable gain amplifier which receives an input signal, outputs an amplified signal, and includes a first field-effect transistor, a gain control signal compensation circuit which outputs a gain control signal for controlling the gain of the variable gain amplifier and includes a second field-effect transistor, and a gain deviation correction circuit which corrects a gain deviation based on the variable gain amplifier and the gain control signal compensation circuit.

摘要翻译： 可变增益电路包括可变增益放大器，其接收输入信号，输出放大信号，并且包括第一场效应晶体管，增益控制信号补偿电路，其输出用于控制可变增益放大器的增益的增益控制信号 并且包括第二场效应晶体管，以及基于可变增益放大器和增益控制信号补偿电路校正增益偏差的增益偏差校正电路。

公开(公告)号：US06477360B1

公开(公告)日：2002-11-05

申请号：US09518879

申请日：2000-03-06

申请人： Osamu Watanabe ,  Takafumi Yamaji ,  Hiroshi Tanimoto ,  Shoji Otaka

发明人： Osamu Watanabe ,  Takafumi Yamaji ,  Hiroshi Tanimoto ,  Shoji Otaka

IPC分类号： H04B126

CPC分类号： H03D7/1433 ,  H03D7/1425 ,  H03D7/1441

摘要： A frequency converter includes a multiplying circuit, a load circuit, and an output buffer circuit. The multiplying circuit is arranged to multiply an RF signal and an LO signal and output a difference frequency signal with a frequency, which is the difference between the frequencies of the two signals, from its output terminal. The load circuit is arranged to connect the output terminal of the multiplying circuit to a power supply. The output buffer circuit is arranged to have an input terminal connected to the output terminal of the multiplying circuit, and an output terminal for outputting a signal to the next stage. A notch circuit for removing an undesired signal frequency component is combined in the load circuit. The notch circuit has an impedance characteristic in which the impedance is abruptly reduced to provide a valley point at the undesired signal frequency.

摘要翻译： 变频器包括乘法电路，负载电路和输出缓冲电路。 乘法电路被布置为将RF信号和LO信号相乘，并以其输出端子的两个信号的频率之间的频率的频率输出差分频率信号。 负载电路被布置成将乘法电路的输出端子连接到电源。 输出缓冲电路被配置为具有连接到乘法电路的输出端子的输入端子和用于向下一级输出信号的输出端子。 用于去除不需要的信号频率分量的陷波电路在负载电路中组合。 陷波电路具有阻抗特性，其中阻抗突然减小以在不期望的信号频率处提供谷点。

公开(公告)号：US20100225397A1

公开(公告)日：2010-09-09

申请号：US12558807

申请日：2009-09-14

申请人： Kohei Onizuka ,  Masahiro Hosoya ,  Hiroaki Ishihara ,  Shoji Otaka ,  Osamu Watanabe

发明人： Kohei Onizuka ,  Masahiro Hosoya ,  Hiroaki Ishihara ,  Shoji Otaka ,  Osamu Watanabe

IPC分类号： H03F3/26

CPC分类号： H03F3/602 ,  H03F3/26 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2200/543

摘要： An amplifier includes: a substrate; first to fourth amplifying units arranged on the substrate and each having first and second terminals, and each amplifying first and second signals to generate first and second amplified signals; a first inductive line arranged on the substrate, connecting the first terminal of the first amplifying unit and the first terminal of the second amplifying unit, and having a linear portion and a bending portion; a second inductive line arranged on the substrate, connecting the second terminal of the second amplifying unit and the first terminal of the third amplifying unit, and having a linear portion and a bending portion; a third inductive line arranged on the substrate, connecting the second terminal of the third amplifying unit and the first terminal of the fourth amplifying unit, and having a linear portion and a bending portion; a fourth inductive line arranged on the substrate, connecting the second terminal of the fourth amplifying unit and the second terminal of the first amplifying unit, and having a linear portion and a bending portion; and a fifth inductive line which establishes magnetic field coupling with the first to fourth inductive lines, and has third and fourth terminals, combines the plurality of the first amplified signals amplified to output the first combined signal from the third terminal, and combines the plurality of the second amplified signals to output the second combined signal from the fourth terminal.

摘要翻译： 放大器包括：基板; 布置在基板上的第一至第四放大单元，每个具有第一和第二端子，并且每个放大第一和第二信号以产生第一和第二放大信号; 布置在所述基板上的第一感应线，连接所述第一放大单元的第一端子和所述第二放大单元的所述第一端子，并且具有直线部分和弯曲部分; 布置在基板上的第二感应线，连接第二放大单元的第二端子和第三放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第三感应线，连接第三放大单元的第二端子和第四放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第四感应线，连接第四放大单元的第二端子和第一放大单元的第二端子，并具有直线部分和弯曲部分; 以及第五感应线，其与第一至第四感应线建立磁场耦合，并且具有第三和第四端子，将被放大的多个第一放大信号组合以输出来自第三端子的第一组合信号，并将多个 第二放大信号以从第四终端输出第二组合信号。

公开(公告)号：US20090302958A1

公开(公告)日：2009-12-10

申请号：US12408910

申请日：2009-03-23

申请人： Hiroki Sakurai ,  Osamu Watanabe ,  Shoji Otaka ,  Ryoichi Tachibana

发明人： Hiroki Sakurai ,  Osamu Watanabe ,  Shoji Otaka ,  Ryoichi Tachibana

IPC分类号： H03L7/099

CPC分类号： H03L7/0991 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1265 ,  H03L7/087 ,  H03L7/18 ,  H03L2207/06

摘要： A digitally controlled oscillator includes a differential inductor including a positive terminal which outputs a positive-phase oscillation signal, a negative terminal which outputs a negative-phase oscillation signal, and a center tap, and including a first contact point in an arbitrary position between the positive terminal and the center tap, and a second contact point in a position corresponding to the first contact point between the negative terminal and the center tap, a first variable capacitor bank connected between the positive terminal and the negative terminal and including a plurality of first variable capacitors which switch capacitance between two values according to a first digital control code, and a second variable capacitor bank connected between the first contact point and the second contact point and including a plurality of second variable capacitors which switch capacitance between two values according to a second digital control code.

摘要翻译： 数字控制振荡器包括差分电感器，其包括输出正相振荡信号的正极端子，输出负相位振荡信号的负极端子和中心抽头，并且包括位于第一接触点之间的任意位置的第一接触点 正极端子和中心抽头，以及与负极端子和中心抽头之间的第一接触点对应的位置的第二接触点，连接在正极端子和负极端子之间的第一可变电容器组，并且包括多个第一 可变电容器，其根据第一数字控制代码在两个值之间切换电容;以及第二可变电容器组，其连接在所述第一接触点和所述第二接触点之间，并且包括多个第二可变电容器，所述第二可变电容器根据 第二个数字控制代码。

公开(公告)号：US5995819A

公开(公告)日：1999-11-30

申请号：US755468

申请日：1996-11-22

申请人： Takafumi Yamaji ,  Osamu Watanabe ,  Hiroshi Tanimoto ,  Tetsuro Itakura ,  Shoji Otaka ,  Ryuichi Fujimoto

发明人： Takafumi Yamaji ,  Osamu Watanabe ,  Hiroshi Tanimoto ,  Tetsuro Itakura ,  Shoji Otaka ,  Ryuichi Fujimoto

IPC分类号： H03D7/00 ,  H03D7/14 ,  H04B1/00

CPC分类号： H03F3/45085 ,  H03D7/00 ,  H03D7/1408 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1475 ,  H03D2200/0007 ,  H03D2200/0025 ,  H03D2200/0047 ,  H03D2200/009

摘要： A frequency converter includes: a signal synthesizer element for inputting first and second input signals to synthesize these signals and for outputting a synthesized signal, from which noises even times as large as the frequency of the second input signal are removed; an amplitude limitation amplifier element, composed of a differential amplifier circuit, for amplifying the synthesized signal outputted from the signal synthesizer element to output an amplified signal having a constant amplitude; and a filter for inputting the amplified signal outputted from the amplitude limitation amplifier element, to remove an unnecessary signal component to produce an output a baseband signal including only a desired signal component. In addition, a radio receiver using the frequency converter of such a construction is designed to input the output of a local oscillator to a variable attenuator or a variable gain amplifier, to input the output of the variable attenuator or the variable gain amplifier as the first input signal to the frequency converter so as to perform the gain control. Thus, not only is self-mixing, a common problem in direct conversion receivers, prevented, but also, because a smaller local oscillation driving signal is required, power consumption is significantly reduced.

摘要翻译： 一种频率转换器，包括：信号合成器元件，用于输入第一和第二输入信号以合成这些信号并输出​​合成信号，从该信号合成信号除去除了第二输入信号的频率以上的噪声; 幅度限制放大器元件，由差分放大电路组成，用于放大从信号合成器元件输出的合成信号，以输出具有恒定幅度的放大信号; 以及滤波器，用于输入从幅度限制放大器元件输出的放大信号，以去除不必要的信号分量以产生仅包括所需信号分量的基带信号。 此外，使用这种结构的变频器的无线电接收机被设计成将本地振荡器的输出输入到可变衰减器或可变增益放大器，以将可变衰减器或可变增益放大器的输出作为第一 输入到变频器的信号，以进行增益控制。 因此，不仅自发混合，直接转换接收器中的常见问题被阻止，而且由于需要较小的本地振荡驱动信号，所以功耗显着降低。