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21. 发明申请

US20090174484A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20090174484A1
公开(公告)日：2009-07-09
申请号：US12131959
申请日：2008-06-03
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
IPC分类号： H03G3/30
CPC分类号： H03F3/191 , H03G1/0052
摘要： An amplifying transistor for amplifying a radio frequency signal between an input terminal and an output terminal. The cathode of a first diode is connected to the input terminal and the anode of a second diode is connected to the output terminal. A matching and attenuating circuit is connected between the anode of the first diode and the cathode of the second diode. A matching and attenuating circuit reduces impedance mismatches on the input terminal side and the output terminal side, and attenuates the radio frequency signal. In an amplification mode, a bias circuit supplies a bias current to an amplifying transistor and a current mirror circuit turns off the first and second diodes. In an attenuation mode, the bias circuit supplies no bias current to the amplifying transistor and the current mirror circuit turns on the first and second diodes.
摘要翻译：一种放大晶体管，用于放大输入端和输出端之间的射频信号。第一二极管的阴极连接到输入端子，第二二极管的阳极连接到输出端子。匹配和衰减电路连接在第一二极管的阳极和第二二极管的阴极之间。匹配和衰减电路减少输入端侧和输出端侧的阻抗失配，并衰减射频信号。在放大模式中，偏置电路向放大晶体管提供偏置电流，并且电流镜电路关断第一和第二二极管。在衰减模式中，偏置电路不向放大晶体管提供偏置电流，并且电流镜电路导通第一和第二二极管。

22. 发明授权

US07522001B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US07522001B2
公开(公告)日：2009-04-21
申请号：US11946931
申请日：2007-11-29
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
IPC分类号： H03G3/10
CPC分类号： H03F1/302 , H03F3/19 , H03F2200/18 , H03F2200/447 , H03F2200/451 , H03G1/0035
摘要： An emitter follower circuit applies to an input terminal of a second amplifying device a voltage according to a reference voltage applied to a reference terminal. First and second resistors are connected in series between the reference terminal and an input terminal of a first amplifying device. The collector of a first transistor is connected to the reference terminal and a control voltage is applied to the base of the first transistor. A third resistor is connected between the emitter of the first transistor and a grounding point. A current mirror circuit draws a current proportional to a current input from the collector of the first transistor from a connection point of the first and second resistors.
摘要翻译：射极跟随器电路根据施加到参考端子的参考电压向第二放大器件的输入端子施加电压。第一和第二电阻串联连接在参考端和第一放大器的输入端之间。第一晶体管的集电极连接到参考端子，并且控制电压被施加到第一晶体管的基极。第三电阻连接在第一晶体管的发射极和接地点之间。电流镜电路从第一和第二电阻器的连接点吸取与来自第一晶体管的集电极的电流成比例的电流。

23. 发明授权

US07193463B2 Driver circuit 有权
标题翻译：驱动电路
公开(公告)号：US07193463B2
公开(公告)日：2007-03-20
申请号：US10922959
申请日：2004-08-23
申请人： Miyo Miyashita , Kazuya Yamamoto
发明人： Miyo Miyashita , Kazuya Yamamoto
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F3/19
摘要： In a driver circuit including transistors each having an emitter follower configuration and a pair of differential transistors with emitter outputs of the transistors of the emitter follower configuration as inputs, end terminals of the pair of differential transistors are connected to individual bonding pads, and the respective bonding pads and voltage sources are individually connected by wires that function as inductors. Thereby, even in the case where the lengths of the wires of output terminals change according to packaging, outputs can be matched by determining the wire lengths of the wires suitably.
摘要翻译：在包括具有发射极跟随器配置的晶体管的驱动器电路和具有射极跟随器结构的晶体管的发射极输出的一对差分晶体管作为输入的情况下，该对差分晶体管的端部端子连接到单独的焊盘，接合焊盘和电压源通过用作电感器的导线分别连接。因此，即使在输出端子的导线的长度根据封装而变化的情况下，也可以通过适当地确定电线的长度来匹配输出。

24. 发明授权

US08525521B2 Detector circuit and semiconductor device using same 有权
公开(公告)号：US08525521B2
公开(公告)日：2013-09-03
申请号：US12941134
申请日：2010-11-08
申请人： Kazuya Yamamoto , Tomoyuki Asada , Miyo Miyashita
发明人： Kazuya Yamamoto , Tomoyuki Asada , Miyo Miyashita
IPC分类号： G01R31/00 , G01R25/02
摘要： A detector circuit for detecting degradation in the distortion characteristics of a power amplifier based on signals from both ends of a coupled line of a directional coupler. The detector circuit includes a phase shifter/attenuator for phase shifting and attenuating a signal from a coupled terminal of the coupled line, a differential amplifier for outputting difference between an output signal from the phase shifter/attenuator and a signal from the isolated terminal of the coupled line, a wave detector circuit for converting the difference into a DC signal, and a comparing circuit for determining whether the voltage level of the DC signal exceeds a predetermined level. When degradation in the distortion characteristics of the power amplifier arises, the phase shifter/attenuator phase shifts the signal from the coupled terminal and outputs a signal 180° out of phase with the signal from the isolated terminal.

25. 发明授权

US08289102B2 Directional coupler 有权
标题翻译：定向耦合器
公开(公告)号：US08289102B2
公开(公告)日：2012-10-16
申请号：US12781848
申请日：2010-05-18
申请人： Kazuya Yamamoto , Miyo Miyashita , Hitoshi Kurusu , Tomoyuki Asada
发明人： Kazuya Yamamoto , Miyo Miyashita , Hitoshi Kurusu , Tomoyuki Asada
IPC分类号： H01P5/18 , H01P1/18
CPC分类号： H01P5/184 , H01P5/18
摘要： A directional coupler includes capacitive elements electrically connected to a coupled port and an isolated port, respectively, for a coupled line on a chip (on-chip). The capacitive elements serve as matching capacitive elements and may be MIM (Metal Insulator Metal) capacitors on a substrate. A first end of a first of the capacitive elements is connected between the coupled port and the coupled line and a second end is grounded. A first end of a second of the capacitive elements is connected between the isolated port and the coupled line and a second end is grounded.
摘要翻译：定向耦合器包括分别电连接到芯片上（芯片上）上的耦合线的耦合端口和隔离端口的电容元件。电容元件用作匹配的电容元件，并且可以是衬底上的MIM（金属绝缘体金属）电容器。第一电容元件的第一端连接在耦合端口和耦合线路之间，第二端接地。第二电容元件的第一端连接在隔离端口和耦合线之间，第二端接地。

26. 发明申请

US20110057746A1 DIRECTIONAL COUPLER 有权
标题翻译：方向耦合器
公开(公告)号：US20110057746A1
公开(公告)日：2011-03-10
申请号：US12781848
申请日：2010-05-18
申请人： Kazuya Yamamoto , Miyo Miyashita , Hitoshi Kurusu , Tomoyuki Asada
发明人： Kazuya Yamamoto , Miyo Miyashita , Hitoshi Kurusu , Tomoyuki Asada
IPC分类号： H01P5/18
CPC分类号： H01P5/184 , H01P5/18
摘要： A directional coupler includes capacitive elements electrically connected to a coupled port and an isolated port, respectively, for a coupled line on a chip (on-chip). The capacitive elements serve as matching capacitive elements and may be MIM (Metal Insulator Metal) capacitors on a substrate. A first end of a first of the capacitive elements is connected between the coupled port and the coupled line and a second end is grounded. A first end of a second of the capacitive elements is connected between the isolated port and the coupled line and a second end is grounded.
摘要翻译：定向耦合器包括分别电连接到芯片上（芯片上）上的耦合线的耦合端口和隔离端口的电容元件。电容元件用作匹配的电容元件，并且可以是衬底上的MIM（金属绝缘体金属）电容器。第一电容元件的第一端连接在耦合端口和耦合线路之间，第二端接地。第二电容元件的第一端连接在隔离端口和耦合线之间，第二端接地。

27. 发明申请

US20100127689A1 REFERENCE VOLTAGE GENERATION CIRCUIT AND BIAS CIRCUIT 有权
标题翻译：参考电压发生电路和偏置电路
公开(公告)号：US20100127689A1
公开(公告)日：2010-05-27
申请号：US12417730
申请日：2009-04-03
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
IPC分类号： G05F3/16 , G05F1/10
CPC分类号： G05F3/185
摘要： A reference voltage generation circuit comprises: a first depletion mode FET; a second depletion mode FET; a first resistor; a first bipolar transistor; a second resistor; a second bipolar transistor; a third bipolar transistor; a third resistor; a third depletion mode FET having its drain connected to a second end of the first resistor and to the collector of the first bipolar transistor; and a fourth bipolar transistor having its base and collector connected to the gate and the source of the third depletion mode FET, and its emitter grounded, wherein source voltage of the second depletion mode FET is output as a reference voltage.
摘要翻译：参考电压产生电路包括：第一耗尽型FET; 第二耗尽型FET; 第一个电阻; 第一双极晶体管; 第二电阻器; 第二双极晶体管; 第三双极晶体管; 第三电阻; 第三耗尽型FET，其漏极连接到第一电阻器的第二端和第一双极晶体管的集电极; 以及第四双极晶体管，其基极和集电极连接到第三耗尽型FET的栅极和源极，并且其发射极接地，其中第二耗尽型FET的源极电压作为参考电压输出。

28. 发明申请

US20090051437A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20090051437A1
公开(公告)日：2009-02-26
申请号：US11946931
申请日：2007-11-29
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
IPC分类号： H03G3/10
CPC分类号： H03F1/302 , H03F3/19 , H03F2200/18 , H03F2200/447 , H03F2200/451 , H03G1/0035
摘要： An emitter follower circuit applies to an input terminal of a second amplifying device a voltage according to a reference voltage applied to a reference terminals. First and second resistors are connected in series between the reference terminal and an input terminal of a first amplifying device. The collector of a first transistor is connected to the reference terminal, and a control voltage is applied to the base of the first transistor. A third resistor is connected between the emitter of the first transistor and a grounding point. A current mirror circuit draws a current proportional to a current input from the collector of the first transistor from a connection point of the first and second resistors.
摘要翻译：射极跟随器电路根据施加到参考端子的参考电压向第二放大器件的输入端子施加电压。第一和第二电阻串联连接在参考端和第一放大器的输入端之间。第一晶体管的集电极连接到参考端子，并且控制电压被施加到第一晶体管的基极。第三电阻连接在第一晶体管的发射极和接地点之间。电流镜电路从第一和第二电阻器的连接点吸取与来自第一晶体管的集电极的电流成比例的电流。

29. 发明授权

US5886578A Differential amplifier including bias circuit with bias resistor 失效
标题翻译：差分放大器包括带偏置电阻的偏置电路
公开(公告)号：US5886578A
公开(公告)日：1999-03-23
申请号：US883455
申请日：1997-06-26
申请人： Miyo Miyashita , Kazuya Yamamoto
发明人： Miyo Miyashita , Kazuya Yamamoto
IPC分类号： H03K5/08 , H03F3/45 , H03K5/02 , H03K19/0185 , H03K19/0952
CPC分类号： H03F3/45076 , H03K19/018564 , H03K5/02
摘要： A differential amplifier receiving a first input signal and a second input signal, respectively, and amplifying voltage difference between the first and second input signals to output an output signal includes a first source follower circuit receiving an external data signal as the first input signal, and having an output node; a second source following circuit having a constant current source FET and receiving a reference voltage as the second input signal; and a bias circuit providing a signal having the same phase as the data signal from the output node of the first source follower circuit and inputting that signal to a gate terminal of the constant current source FET of the second source follower circuit. By providing an input interface circuit connected to an external signal source and producing a phase inversion signal from an input data signal in a differential amplifier or in a first stage differential amplifier connected to other amplifiers in multiple stages, the differential gain can be improved to a value approximately equal to that obtained when differential inputs are supplied.
摘要翻译：分别接收第一输入信号和第二输入信号的差分放大器以及放大第一和第二输入信号之间的电压差以输出输出信号包括接收作为第一输入信号的外部数据信号的第一源极跟随器电路，以及具有输出节点; 第二源电路，具有恒流源FET并接收参考电压作为第二输入信号; 以及偏置电路，提供与来自第一源极跟随器电路的输出节点的数据信号具有相同相位的信号，并将该信号输入到第二源极跟随器电路的恒流源FET的栅极端子。通过提供连接到外部信号源的输入接口电路，并且从差分放大器中的输入数据信号或在多级连接到其它放大器的第一级差分放大器中产生相位反转信号，可以将差分增益提高到大约等于提供差分输入时获得的值。

30. 发明授权

US5550511A Differential amplifier having single phase input and two output phases 失效
标题翻译：差分放大器具有单相输入和两个输出相位
公开(公告)号：US5550511A
公开(公告)日：1996-08-27
申请号：US451493
申请日：1995-05-26
申请人： Miyo Miyashita
发明人： Miyo Miyashita
IPC分类号： H03F3/45 , H03K5/24
CPC分类号： H03F3/45381 , H03K5/2481 , H03F2203/45464 , H03F2203/45631 , H03F2203/45638 , H03F2203/45654 , H03F2203/45702
摘要： A differential amplifier includes switching FETs provided at an input side and at a reference side, respectively, forming a differential pair; an FET serving as a constant current source for providing a current flow equal to a sum of the currents flowing through the respective switching FETS; and an inductor connected in series to the FET serving as a constant current source between the connection node of both switching FETs and the power supply of the amplifier. The inductor is not a load with respect to DC and any fluctuation of the signal current flowing through the FET serving as a constant current source is small so that any difference between the output voltages at two different phase outputs is reduced.
摘要翻译：差分放大器包括分别设置在输入侧和参考侧的开关FET，形成差分对; 用作恒流源的FET，用于提供等于流过各个开关FET的电流之和的电流; 以及与在两个开关FET的连接节点和放大器的电源之间作为恒定电流源的FET串联连接的电感器。电感器不是相对于直流的负载，并且流过作为恒定电流源的FET的信号电流的任何波动都很小，所以两个不同相位输出端的输出电压之间的差异减小。

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