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1. 发明授权

US08212615B2 Variable-gain amplifier circuit and wireless communication device integrated circuit equipped therewith 有权
标题翻译：可变增益放大器电路和配备其的无线通信设备集成电路
公开(公告)号：US08212615B2
公开(公告)日：2012-07-03
申请号：US12765010
申请日：2010-04-22
申请人： Toru Masuda , Nobuhiro Shiramizu , Takahiro Nakamura , Katsuyoshi Washio
发明人： Toru Masuda , Nobuhiro Shiramizu , Takahiro Nakamura , Katsuyoshi Washio
IPC分类号： H03F3/45 , H03F3/191
CPC分类号： H03G3/3052
摘要： There is disclosed a variable-gain amplifier circuit that operates on a low voltage, exhibits low distortion, provides a wide range of variation, and is suitable for use in a low-power-consumption wireless communication system. The variable-gain amplifier circuit is configured so that a variable-load circuit, which includes three reactance function elements and provides a wide range of impedance variation, is connected to a conductor circuit whose output terminal generates a positive-phase output current proportional to conductance with respect to an input voltage.
摘要翻译：公开了一种在低电压下操作的可变增益放大器电路，具有低失真，提供宽范围的变化，并且适用于低功耗无线通信系统。可变增益放大器电路被配置为使得包括三个电抗功能元件并提供宽范围的阻抗变化的可变负载电路连接到其输出端产生与电导成比例的正相输出电流的导体电路相对于输入电压。

2. 发明授权

US08121579B2 Active mixer circuit and a receiver circuit or a millimeter-wave communication unit using it 有权
标题翻译：有源混频器电路和接收器电路或使用它的毫米波通信单元
公开(公告)号：US08121579B2
公开(公告)日：2012-02-21
申请号：US12370159
申请日：2009-02-12
申请人： Nobuhiro Shiramizu , Toru Masuda , Takahiro Nakamura , Katsuyoshi Washio , Masamichi Tanabe
发明人： Nobuhiro Shiramizu , Toru Masuda , Takahiro Nakamura , Katsuyoshi Washio , Masamichi Tanabe
IPC分类号： H04B1/16 , H04B1/26 , H03D7/16
CPC分类号： H04B1/28 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D2200/0023 , H03D2200/0043
摘要： The present invention provides a semiconductor integrated circuit including an active mixer circuit that is operated at low voltage, low noise, and low power consumption. It includes a transconductance amplifier, a transformer, and a multiplier, connects a transformer between the transconductance amplifier and the multiplier, and separates between the transconductance amplifier and the multiplier with respect to direct current inside the transformer. Further, each of the tranconductance amplifier and the multiplier is configured of transistors that are single-stacked between the supply voltage terminal and ground terminal.
摘要翻译：本发明提供一种半导体集成电路，包括以低电压，低噪声和低功耗工作的有源混频器电路。它包括跨导放大器，变压器和乘法器，连接跨导放大器和乘法器之间的变压器，并且相对于变压器内部的直流电流在跨导放大器和乘法器之间分离。此外，跨导放大器和乘法器中的每一个由在电源电压端子和接地端子之间单层堆叠的晶体管构成。

3. 发明申请

US20100271122A1 VARIABLE-GAIN AMPLIFIER CIRCUIT AND WIRELESS COMMUNICATION DEVICE INTEGRATED CIRCUIT EQUIPPED THEREWITH 有权
标题翻译：可变增益放大器电路和无线通信设备集成电路
公开(公告)号：US20100271122A1
公开(公告)日：2010-10-28
申请号：US12765010
申请日：2010-04-22
申请人： Toru MASUDA , Nobuhiro Shiramizu , Takahiro Nakamura , Katsuyoshi Washio
发明人： Toru MASUDA , Nobuhiro Shiramizu , Takahiro Nakamura , Katsuyoshi Washio
IPC分类号： H03G3/20
CPC分类号： H03G3/3052
摘要： There is disclosed a variable-gain amplifier circuit that operates on a low voltage, exhibits low distortion, provides a wide range of variation, and is suitable for use in a low-power-consumption wireless communication system. The variable-gain amplifier circuit is configured so that a variable-load circuit, which includes three reactance function elements and provides a wide range of impedance variation, is connected to a conductor circuit whose output terminal generates a positive-phase output current proportional to conductance with respect to an input voltage.
摘要翻译：公开了一种在低电压下操作的可变增益放大器电路，具有低失真，提供宽范围的变化，并且适用于低功耗无线通信系统。可变增益放大器电路被配置为使得包括三个电抗功能元件并提供宽范围的阻抗变化的可变负载电路连接到其输出端产生与电导成比例的正相输出电流的导体电路相对于输入电压。

4. 发明授权

US07642618B2 Semiconductor devices with inductors 有权
标题翻译：具有电感器的半导体器件
公开(公告)号：US07642618B2
公开(公告)日：2010-01-05
申请号：US11183800
申请日：2005-07-19
申请人： Nobuhiro Shiramizu , Takahiro Nakamura , Toru Masuda , Nobuhiro Kasa , Hiroshi Mori
发明人： Nobuhiro Shiramizu , Takahiro Nakamura , Toru Masuda , Nobuhiro Kasa , Hiroshi Mori
IPC分类号： H01L27/00 , H01F27/28
CPC分类号： H01L23/5227 , H01F17/0006 , H01L2924/0002 , H01L2924/3011 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1271 , H01L2924/00
摘要： Semiconductor devices are provided with high performance high-frequency circuits in which interference caused by inductors is reduced. In a semiconductor device including a modulator circuit to modulate a carrier wave by a base band signal to output an RF signal and a demodulator circuit to demodulate the RF signal by use of the carrier wave to gain the base band signal and a local oscillator to generate the carrier wave, inductors respectively having a closed loop wire are adopted. Interference caused by mutual inductance is reduced by the closed loop wire. For example, where inductors are adopted in the modulator circuit, a closed loop wire is disposed around the outer periphery of the inductors.
摘要翻译：半导体器件设置有由电感器引起的干扰减小的高性能高频电路。在包括通过基带信号调制载波以调制RF信号的调制器电路以及解调器电路的半导体器件中，通过使用载波来解调RF信号以获得基带信号和本地振荡器以产生采用载波，分别具有闭环线的电感器。通过闭环线减少互感造成的干扰。例如，在调制器电路中采用电感器的情况下，围绕电感器的外周设置闭环线。

5. 发明申请

US20060038621A1 Semiconductor devices with inductors 有权
标题翻译：具有电感器的半导体器件
公开(公告)号：US20060038621A1
公开(公告)日：2006-02-23
申请号：US11183800
申请日：2005-07-19
申请人： Nobuhiro Shiramizu , Takahiro Nakamura , Toru Masuda , Nobuhiro Kasa , Hiroshi Mori
发明人： Nobuhiro Shiramizu , Takahiro Nakamura , Toru Masuda , Nobuhiro Kasa , Hiroshi Mori
IPC分类号： H03J7/02
CPC分类号： H01L23/5227 , H01F17/0006 , H01L2924/0002 , H01L2924/3011 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1271 , H01L2924/00
摘要： Semiconductor devices provided with high performance high-frequency circuits that reduce interference caused by inductors are provided. In the semiconductor device including a modulator circuit to modulate a carrier wave by a base band signal to output an RF signal and a demodulator circuit to demodulate the RF signal by use of the carrier wave to gain the base band signal and a local oscillator to generate the carrier wave, inductors respectively having a closed loop wire are adopted. Interference caused by mutual inductance is reduced by the closed loop wire. For example, where inductors are adopted in the modulator circuit, a closed loop wire is disposed around the outer periphery of the inductors.
摘要翻译：提供了具有降低由电感器引起的干扰的高性能高频电路的半导体器件。在包括通过基带信号调制载波以调制RF信号的调制器电路和解调器电路的半导体器件中，通过使用载波来解调RF信号以获得基带信号和本地振荡器以产生采用载波，分别具有闭环线的电感器。通过闭环线减少互感造成的干扰。例如，在调制器电路中采用电感器的情况下，围绕电感器的外周设置闭环线。

6. 发明授权

US07821335B2 Semiconductor integrated circuit with variable gain amplifier 有权
标题翻译：具有可变增益放大器的半导体集成电路
公开(公告)号：US07821335B2
公开(公告)日：2010-10-26
申请号：US12252554
申请日：2008-10-16
申请人： Nobuhiro Shiramizu , Toru Masuda
发明人： Nobuhiro Shiramizu , Toru Masuda
IPC分类号： H03F1/24
CPC分类号： H03F3/50 , H03F1/342 , H03F3/195 , H03F2200/135 , H03F2200/18 , H03F2200/294 , H03F2200/451 , H03F2203/5036 , H03G1/0023
摘要： The variable gain amplifier includes a bias circuit (BC) 1, a matching circuit (MC) 2, a variable gain resistive feedback amplifier (FA) 3 and an output follower (EA) 4. The resistance values of the load resistance Rc and feedback resistance Rf are changed in cooperation. In a case of making the load resistance Rc a high resistance to set the low noise amplifier to a high gain, the feedback resistance Rf is also made a high resistance, the feedback time constant τfb(c1)≈2π·RfCbe/(1+gmRc) of the closed loop of the resistive negative feedback amplifier 3 becomes substantially constant, and then the amplifier has a gain small in frequency dependency over a wide bandwidth. In a case of making the load resistance Rc a low resistance to set the low noise amplifier to a low gain, the feedback resistance Rf is also made a low resistance. The feedback resistance Rf with the low resistance increases the negative feedback quantity, and thus the amplifier is set to a low gain. Also, the load resistance Rc is made a low resistance, and the feedback time constant τfb(c1) becomes substantially constant. The gain is not lowered further in a high frequency region.
摘要翻译：可变增益放大器包括偏置电路（BC）1，匹配电路（MC）2，可变增益电阻反馈放大器（FA）3和输出跟随器（EA）4.负载电阻Rc和反馈的电阻值电阻Rf随之改变。在使负载电阻Rc为高电平的情况下，将低噪声放大器设定为高增益的情况下，反馈电阻Rf也变为高电阻，反馈时间常数τfb（c1）≈2＆pgr·RfCbe /（1 电阻性负反馈放大器3的闭环的+ gmRc变得基本恒定，然后放大器在宽带宽上具有小的频率依赖性的增益。在将负载电阻Rc设置为低电阻以将低噪声放大器设置为低增益的情况下，反馈电阻Rf也被制成低电阻。具有低电阻的反馈电阻Rf增加负反馈量，因此放大器被设置为低增益。此外，使负载电阻Rc为低电阻，反馈时间常数τfb（c1）变得基本恒定。增益在高频区域不会进一步降低。

7. 发明授权

US07592877B2 Variable frequency oscillator and communication circuit with it 失效
标题翻译：变频振荡器及通讯电路
公开(公告)号：US07592877B2
公开(公告)日：2009-09-22
申请号：US11771403
申请日：2007-06-29
申请人： Nobuhiro Shiramizu , Toru Masuda
发明人： Nobuhiro Shiramizu , Toru Masuda
IPC分类号： H03B5/24
CPC分类号： H03L7/0995 , H03K3/0322 , H03K3/35613 , H03K5/133 , H03K2005/00208 , H03K2005/00234 , H03L1/00 , H03L7/0891 , H03L7/18 , H03M9/00
摘要： In a variable frequency oscillator in a semiconductor device, as the variation of an oscillation frequency caused by the variation of temperature and supply voltage and process variation is large, it is difficult to reduce the conversion ratio of control voltage dependent upon phase noise and the oscillation frequency and therefore, phase noise is large. The variation of the oscillation frequency is suppressed and phase noise is reduced by connecting a voltage-to-current conversion circuit that converts input control voltage to control current of a ring oscillator to the ring oscillator where delay circuits a delay time of which increases and decreases according to the amplitude of input control current are cascade-connected by a plurality of stages in a ring and increasing/decreasing current dependent upon any of temperature, supply voltage and the threshold voltage of a transistor inside the voltage-to-current conversion circuit.
摘要翻译：在半导体器件的可变频率振荡器中，随着由温度和电源电压的变化引起的振荡频率的变化和工艺变化的变化大，难以根据相位噪声和振荡来降低控制电压的转换比因此，相位噪声较大。通过连接将输入控制电压转换为环形振荡器的控制电流的电压 - 电流转换电路，振荡频率的变化被抑制，并且相位噪声减小，其中延迟电路的延迟时间增加和减小根据输入控制电流的幅度通过环中的多个级级联连接，并且取决于电压 - 电流转换电路内的晶体管的温度，电源电压和阈值电压中的任一个的增加/减少电流。

8. 发明授权

US09335261B2 Time-domain spectroscopy and time-domain spectroscopic analysis system 有权
标题翻译：时域光谱和时域光谱分析系统
公开(公告)号：US09335261B2
公开(公告)日：2016-05-10
申请号：US14382802
申请日：2012-03-30
申请人： Takahiro Nakamura , Nobuhiro Shiramizu
发明人： Takahiro Nakamura , Nobuhiro Shiramizu
IPC分类号： G01N21/3586
CPC分类号： G01N21/3586 , G01N2201/06113
摘要： The time-domain spectroscopy analysis system includes a splitter for splitting pulsed light entered, a variable delayer for delaying timing of a first part of the pulsed light split by the splitter, an electromagnetic wave generator for converting a second part of the pulsed light split by the splitter into an electromagnetic wave, a detector for detecting measurement data from a pulse having passed through a measurement object subjected to the electromagnetic wave emitted from the electromagnetic wave generator, and the pulse outputted from the variable delayer, and a comparator for detecting a phase difference between the pulsed light before being entered into the electromagnetic wave generator and the pulsed light outputted from the variable delayer, wherein a result obtained by the comparator is fed back to the variable delayer.
摘要翻译：时域光谱分析系统包括用于分离入射的脉冲光的分光器，用于延迟由分光器分离的脉冲光的第一部分的定时的可变延迟器，电磁波发生器，用于将分裂的脉冲光的第二部分转换成分离器成为电磁波，检测器，用于检测来自经受从电磁波发生器发射的电磁波的测量对象的脉冲的测量数据和从可变延迟器输出的脉冲;以及比较器，用于检测相位在进入电磁波发生器之前的脉冲光与从可变延迟器输出的脉冲光之间的差异，其中由比较器获得的结果被反馈给可变延迟器。

9. 发明申请

US20150028211A1 TIME-DOMAIN SPECTROSCOPY AND TIME-DOMAIN SPECTROSCOPIC ANALYSIS SYSTEM 有权
标题翻译：时域光谱和时域光谱分析系统
公开(公告)号：US20150028211A1
公开(公告)日：2015-01-29
申请号：US14382802
申请日：2012-03-30
申请人： Takahiro Nakamura , Nobuhiro Shiramizu
发明人： Takahiro Nakamura , Nobuhiro Shiramizu
IPC分类号： G01N21/35
CPC分类号： G01N21/3586 , G01N2201/06113
摘要： The time-domain spectroscopy analysis system includes a splitter for splitting pulsed light entered, a variable delayer for delaying timing of a first part of the pulsed light split by the splitter, an electromagnetic wave generator for converting a second part of the pulsed light split by the splitter into an electromagnetic wave, a detector for detecting measurement data from a pulse having passed through a measurement object subjected to the electromagnetic wave emitted from the electromagnetic wave generator, and the pulse outputted from the variable delayer, and a comparator for detecting a phase difference between the pulsed light before being entered into the electromagnetic wave generator and the pulsed light outputted from the variable delayer, wherein a result obtained by the comparator is fed back to the variable delayer.
摘要翻译：时域光谱分析系统包括用于分离入射的脉冲光的分光器，用于延迟由分光器分离的脉冲光的第一部分的定时的可变延迟器，电磁波发生器，用于将分裂的脉冲光的第二部分转换成分离器成为电磁波，检测器，用于检测来自经受从电磁波发生器发射的电磁波的测量对象的脉冲的测量数据和从可变延迟器输出的脉冲;以及比较器，用于检测相位在进入电磁波发生器之前的脉冲光与从可变延迟器输出的脉冲光之间的差异，其中由比较器获得的结果被反馈给可变延迟器。

10. 发明授权

US06504140B1 Optical interconnection receiving module 失效
标题翻译：光互连接收模块
公开(公告)号：US06504140B1
公开(公告)日：2003-01-07
申请号：US09642584
申请日：2000-08-22
申请人： Satoshi Ueno , Nobuhiro Shiramizu , Kiyoshi Hayashi , Takashi Harada
发明人： Satoshi Ueno , Nobuhiro Shiramizu , Kiyoshi Hayashi , Takashi Harada
IPC分类号： H01L3100
CPC分类号： H01L27/14643 , H01L27/14627
摘要： The present invention provides an optical interconnection receiving module that can cancel out the effect of cross talk noise caused by the input signal of another channel on the preamplifier side and the reference amplifier side, and provides suitable device structures for a bypass capacitor used to stabilize supply voltage and for a capacitance device used to cancel out the effect of cross talk noise caused by the input signal of another channel on the preamplifier side and on the reference amplifier side. According to the present invention, there are provided: a photodiode array comprising a plurality of photodiodes, each of which receives an optical signal on a plurality of channels and converts the optical signal into an electric signal; and a receiving circuit for distinguishing an input signal which comprises: a preamplifier for amplifying the electric signal converted from the optical signal by the photodiode array for each of the channels; a comparator; and a reference amplifier for generating reference voltage, wherein a plurality of capacitance devices each equivalent to the photodiode are formed on the semiconductor chip where the receiving circuit is formed, and each of the equivalent capacitance devices is connected between the input terminal of the reference amplifier and a supply voltage terminal.
摘要翻译：本发明提供了一种光互连接收模块，其能够抵消由前置放大器侧和参考放大器侧的另一通道的输入信号引起的串扰噪声的影响，并为用于稳定供电的旁路电容器提供合适的器件结构电压和用于消除由前置放大器侧和参考放大器侧的另一通道的输入信号引起的串扰噪声的影响的电容器件。根据本发明，提供：包括多个光电二极管的光电二极管阵列，每个光电二极管在多个通道上接收光信号，并将光信号转换为电信号; 以及接收电路，用于区分输入信号，该接收电路包括：前置放大器，用于放大由每个通道的光电二极管阵列从光信号转换的电信号; 比较器以及用于产生参考电压的参考放大器，其中在形成接收电路的半导体芯片上形成各自等效于光电二极管的多个电容器件，并且每个等效电容器件连接在参考放大器的输入端和电源电压端子。

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