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公开(公告)号：US08558549B2
公开(公告)日：2013-10-15
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
CPC分类号： G01R31/2822 , G01R23/20 , H03F3/24 , H04B1/0475 , H04B17/103
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.
摘要翻译： 一种用于根据来自定向耦合器的耦合线的两端的信号来检测功率放大器的失真特性的劣化的检测器电路。 检测器电路包括用于相移和衰减来自耦合线的耦合端的信号的移相器/衰减器，用于输出来自移相器/衰减器的输出信号与来自该移相器/衰减器的隔离端的信号的差分放大器 耦合线，用于将差值转换为DC信号的波检测器电路，以及用于确定DC信号的电压电平是否超过预定电平的比较电路。 当功率放大器的失真特性出现降低时，移相器/衰减器将来自耦合端子的信号相移，并输出与隔离端子信号180°异相的信号。
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公开(公告)号：US20110187349A1
公开(公告)日：2011-08-04
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： G01R19/22
CPC分类号： G01R31/2822 , G01R23/20 , H03F3/24 , H04B1/0475 , H04B17/103
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.
摘要翻译： 一种用于根据来自定向耦合器的耦合线的两端的信号来检测功率放大器的失真特性的劣化的检测器电路。 检测器电路包括用于相移和衰减来自耦合线的耦合端的信号的移相器/衰减器，用于输出来自移相器/衰减器的输出信号与来自该移相器/衰减器的隔离端的信号的差分放大器 耦合线，用于将差值转换为DC信号的波检测器电路，以及用于确定DC信号的电压电平是否超过预定电平的比较电路。 当功率放大器的失真特性出现降低时，移相器/衰减器将来自耦合端子的信号相移，并输出与隔离端子信号180°异相的信号。
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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
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.
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公开(公告)号：US08289102B2
公开(公告)日：2012-10-16
申请号：US12781848
申请日：2010-05-18
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。
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公开(公告)号：US20110057746A1
公开(公告)日：2011-03-10
申请号：US12781848
申请日：2010-05-18
IPC分类号： 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。
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公开(公告)号：US20090309655A1
公开(公告)日：2009-12-17
申请号：US12254069
申请日：2008-10-20
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
CPC分类号： H03F3/191 , H03F1/0261 , H03F3/72 , H03F2200/18 , H03F2200/408 , H03F2203/7239
摘要： A power amplifier includes: an amplifying transistor; a bias circuit; a first diode; a second diode; a matching attenuating circuit; a first current mirror circuit; a serial resonant circuit, and a switch. In an amplification mode, the bias circuit supplies a bias current to the amplifying transistor, and the first current mirror circuit turns off the first and second diodes, and the switch. In an attenuation mode, the bias circuit supplies no bias current to the amplifying transistor, and the first current mirror circuit turns on the first and second diodes, and the switch.
摘要翻译： 功率放大器包括：放大晶体管; 偏置电路; 第一个二极管; 第二个二极管; 匹配衰减电路; 第一电流镜电路; 串联谐振电路和开关。 在放大模式中，偏置电路向放大晶体管提供偏置电流，并且第一电流镜电路关断第一和第二二极管以及开关。 在衰减模式中，偏置电路不向放大晶体管提供偏置电流，并且第一电流镜电路导通第一和第二二极管以及开关。
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公开(公告)号：US07616060B2
公开(公告)日：2009-11-10
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： H03G3/00
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。
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公开(公告)号：US07474170B2
公开(公告)日：2009-01-06
申请号：US11678643
申请日：2007-02-26
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
IPC分类号： H01P1/22
CPC分类号： H03F1/3276 , H03H7/253 , H03H11/24
摘要： A linearizer includes fifth diodes, a third resistor, sixth diodes, and a first npn heterojunction bipolar transistor. When a low-level voltage is applied to first and fourth control voltage terminals and a high-level voltage is applied to second and third control voltage terminals, a low-level voltage is applied to a fifth control voltage terminal, and when a high-level voltage is applied to the first and fourth control voltage terminals and a low-level voltage is applied to the second and third control voltage terminals, a high-level voltage is applied to the fifth control voltage terminal.
摘要翻译： 线性化器包括第五二极管，第三电阻器，第六二极管和第一npn异质结双极晶体管。 当对第一和第四控制电压端子施加低电平电压，并且向第二和第三控制电压端子施加高电平电压时，向第五控制电压端子施加低电平电压， 对第一和第四控制电压端子施加电平电压，并且向第二和第三控制电压端子施加低电平电压，向第五控制电压端子施加高电平电压。
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公开(公告)号：US07474169B2
公开(公告)日：2009-01-06
申请号：US11553563
申请日：2006-10-27
申请人： Kazuya Yamamoto , Miyo Miyashita
发明人： Kazuya Yamamoto , Miyo Miyashita
CPC分类号： H03H7/253
摘要： An attenuator includes a first diode, a first control voltage terminal, a second diode, a first resistance, a second resistance, a third diode, a fourth diode, a fifth capacitance, a second control voltage terminal, a third control voltage terminal, a fourth control voltage terminal, and a linearizer provided between an input terminal and the anode of the first diode. The linearizer linearizes a signal input to the input terminal only when low level voltages are applied to the first and fourth control voltage terminals at the same time that high level voltages are applied to the second and third control voltage terminals.
摘要翻译： 衰减器包括第一二极管，第一控制电压端子，第二二极管，第一电阻，第二电阻，第三二极管，第四二极管，第五电容，第二控制电压端子，第三控制电压端子， 第四控制电压端子和设置在第一二极管的输入端子和阳极之间的线性化电路。 线性化器仅在将低电平电压施加到第一和第四控制电压端子的同时将高电平电压施加到第二和第三控制电压端子的同时，将输入到输入端子的信号线性化。
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公开(公告)号：US20120062321A1
公开(公告)日：2012-03-15
申请号：US13079046
申请日：2011-04-04
IPC分类号： H03F3/20
CPC分类号： H03F3/195 , H03F1/0277 , H03F3/189 , H03F3/245 , H03F3/72 , H03F2200/27 , H03F2200/411 , H03F2203/7206 , H03F2203/7236 , H03G1/0088
摘要： A power amplifier comprises: an amplifying transistor for amplifying an input signal; a reference voltage generating circuit which generates a reference voltage; a bias circuit generating a bias voltage based on the reference voltage and supplying the bias voltage to the amplifying transistor; and a booster elevating an enable voltage input from outside and outputting the enable voltage. The reference voltage generating circuit is turned ON/OFF in correspondence with an output voltage of the booster. The booster includes: an enable terminal to which the enable voltage is applied; a power source terminal connected to a power source; a transistor having a control electrode connected to the enable terminal, a first electrode connected to the power source terminal, and a second electrode that is grounded; and a FET resistor connected between the first electrode of the transistor and the power source terminal. A gate electrode of the FET resistor is open.
摘要翻译： 功率放大器包括：放大晶体管，用于放大输入信号; 产生参考电压的基准电压产生电路; 偏置电路，基于所述参考电压产生偏置电压，并将所述偏置电压提供给所述放大晶体管; 并且升压器提升从外部输入的使能电压并输出使能电压。 参考电压产生电路对应于升压器的输出电压而导通/截止。 升压器包括：施加使能电压的使能端子; 连接到电源的电源端子; 具有连接到使能端子的控制电极的晶体管，连接到电源端子的第一电极和接地的第二电极; 以及连接在晶体管的第一电极和电源端子之间的FET电阻器。 FET电阻的栅电极断开。
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