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1. 发明申请

US20190253025A1 AMPLIFIER LINEARIZATION AND RELATED APPARATUS THEREOF 审中-公开
公开(公告)号：US20190253025A1
公开(公告)日：2019-08-15
申请号：US16273261
申请日：2019-02-12
申请人： MEDIATEK Singapore Pte. Ltd.
发明人： Zhiming Deng , Osama Shanaa
IPC分类号： H03F1/32 , H03F1/02 , H03F1/56 , H03F3/213
CPC分类号： H03F1/3247 , H03F1/0227 , H03F1/223 , H03F1/3205 , H03F1/3211 , H03F1/56 , H03F3/213 , H03F3/45188 , H03F3/45475 , H03F2200/211
摘要： Some embodiments relate to a device, comprising an amplifier and a linearizer, the linearizer comprising a first transistor, the first transistor comprising a first terminal coupled to an input of the amplifier, a second terminal configured to be coupled to a DC supply voltage, and a control terminal configured to control a current flowing between the first and second terminals and configured to receive a DC bias voltage different from a voltage of the first terminal. Some embodiments relate to a device, comprising an amplifier, comprising an input, an output, and a first set of one or more transistors coupled between the input and the output, and a linearizer, comprising a second set of one or more transistors coupled between a DC supply voltage and the input of the amplifier, wherein the first set of transistors and the second set of transistors have a same topology.

2. 发明授权

US09929720B2 High frequency attenuator 有权
公开(公告)号：US09929720B2
公开(公告)日：2018-03-27
申请号：US14847900
申请日：2015-09-08
申请人： STMicroelectronics SA , STMicroelectronics (Crolles 2) SAS
发明人： Thomas Quemerais , Alice Bossuet , Daniel Gloria
IPC分类号： G01R1/067 , H03H11/24 , H03F3/60
CPC分类号： H03H11/245 , G01R1/06711 , H03F3/602 , H03F2200/211
摘要： An attenuator includes: a first circuit including a common collector or common drain amplifier formed of a first transistor having its control node connected to an input of the attenuator and its emitter or source connected to an intermediate node of the attenuator; and a second circuit including a common collector or common drain amplifier formed of a second transistor having its emitter or source connected to the intermediate node and its control node connected to an output of the attenuator.

3. 发明申请

US20180019714A1 INTEGRATED RF LIMITER 审中-公开
公开(公告)号：US20180019714A1
公开(公告)日：2018-01-18
申请号：US15663322
申请日：2017-07-28
申请人： Skyworks Solutions, Inc.
发明人： Thomas William Arell
IPC分类号： H03F1/52 , H03F3/193
CPC分类号： H03F1/523 , H03F3/193 , H03F3/195 , H03F2200/211 , H03F2200/444 , H03F2200/451 , H03G7/00 , H03G11/00
摘要： A limiter circuit is integrated into an RF power amplifier. The limiter circuit automatically starts adding attenuation at the input of the RF power amplifier after a predetermined input power level threshold is exceeded, thereby extending the safe input drive level to protect the amplifier. In a preferred embodiment of the invention, the limiter circuit is implemented using a pseudomorphic high electron mobility transistor (PHEMT) device or a metal semiconductor field effect transistor (MESFET) device. Diode connected transistors or Schottky diodes may also be used in the limiter circuit.

4. 发明申请

US20180006611A1 DOHERTY AMPLIFIER CIRCUITS 审中-公开
公开(公告)号：US20180006611A1
公开(公告)日：2018-01-04
申请号：US15596416
申请日：2017-05-16
申请人： NXP B.V.
发明人： Gerben Willem de Jong , Mark Pieter van der Heijden , Jozef Reinerus Maria Bergervoet , Tony Vanhoucke , Gian Hoogzaad , Ivan Matkov Zahariev
IPC分类号： H03F1/02 , H03F1/56 , H03F3/213
CPC分类号： H03F1/0288 , H01L23/66 , H03F1/30 , H03F1/56 , H03F1/565 , H03F3/195 , H03F3/213 , H03F2200/211 , H03F2200/213 , H03F2200/216 , H03F2200/318 , H03F2200/387 , H03F2200/391 , H03F2200/408 , H03F2200/447 , H03F2200/468 , H03F2200/534 , H03F2200/541 , H04L65/1036 , H04L65/1069 , H04L65/80
摘要： A Doherty amplifier circuit comprising: a splitter having: a splitter-input-terminal for receiving an input signal; a main-splitter-output-terminal; and a peaking-splitter-output-terminal; a main-power-amplifier having a main-power-input-terminal and a main-power-output-terminal, wherein; the main-power-input-terminal is connected to the main-splitter-output-terminal; and the main-power-output-terminal is configured to provide a main-power-amplifier-output-signal; a peaking-power-amplifier having a peaking-power-input-terminal and a peaking-power-output-terminal, wherein: the peaking-power-input-terminal is connected to the peaking-splitter-output-terminal; and the peaking-power-output-terminal is configured to provide a peaking-power-amplifier-output-signal. The splitter, the main-power-amplifier and the peaking-power-amplifier are provided by means of an integrated circuit.

5. 发明授权

US09853606B2 Semiconductor integrated circuit and wireless transmitter 有权
公开(公告)号：US09853606B2
公开(公告)日：2017-12-26
申请号：US15083629
申请日：2016-03-29
申请人： FUJITSU LIMITED
发明人： Kouichi Kanda , Shoichi Masui
IPC分类号： H03F1/12 , H04B1/04 , H03F3/16 , H04W52/04 , H03F1/56 , H03F3/193 , H03F3/24 , H03G1/00 , H03G3/30 , H01P1/22
CPC分类号： H03F1/12 , H01P1/22 , H03F1/56 , H03F3/16 , H03F3/193 , H03F3/245 , H03F2200/211 , H03F2200/423 , H03G1/0088 , H03G3/3042 , H04B1/0458 , H04W52/04
摘要： A semiconductor integrated circuit includes a first transmission power mode configured to transmit by a first power, and a second transmission power mode configured to transmit by a second power smaller than the first power, the semiconductor integrated circuit. The semiconductor integrated circuit includes a first transistor configured to receive and amplify a transmission signal in the second transmission power mode, and an attenuator including a resistor element and a switching element, provided between an output of the first transistor and an output terminal, configured to control attenuation of an output signal of the first transistor.

6. 发明申请

US20170201827A1 HEADPHONE DRIVER, A SOUND SYSTEM THAT INCORPORATES THE HEADPHONE DRIVER AND A COMPUTING SYSTEM THAT INCORPORATES THE HEADPHONE DRIVER 有权
公开(公告)号：US20170201827A1
公开(公告)日：2017-07-13
申请号：US15332275
申请日：2016-10-24
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： SANG HYUB KANG , SUN WOO KWON , HYUN SUN SHIM , MYUNG JIN LEE
IPC分类号： H04R3/12 , H03F3/45 , H03G1/00 , H03F3/183 , H04R5/04 , H03H7/075
CPC分类号： H04R3/12 , H03F3/183 , H03F3/187 , H03F3/45475 , H03F2200/156 , H03F2200/211 , H03F2200/252 , H03F2203/45528 , H03F2203/45534 , H03F2203/45604 , H03F2203/45616 , H03G1/0035 , H03G1/0088 , H03G3/3026 , H03H7/075 , H03H7/24 , H04R1/1083 , H04R5/04
摘要： A headphone driver, a sound processor that incorporates the headphone driver and a computing system that incorporates the headphone driver are provided. The headphone driver includes an amplifier having an input terminal and an output terminal, an R-2R ladder network provided with an input signal and connected to the input terminal of the amplifier, and a feedback resistor group connected to the input terminal and to the output terminal of the amplifier. The R-2R ladder network includes a plurality of resistor branches and a first attenuator that is connected between the plurality of resistor branches.

7. 发明授权

US09628204B2 Communication device, reception power monitoring device, and communication device system 有权
公开(公告)号：US09628204B2
公开(公告)日：2017-04-18
申请号：US14774192
申请日：2014-02-06
申请人： NEC CORPORATION
发明人： Satoshi Iino
IPC分类号： H04M1/00 , H04B17/318 , H04B1/3877 , H03F3/189 , H03F3/24 , H03F3/45 , H03K3/356 , H04B1/04
CPC分类号： H04B17/318 , H03F3/189 , H03F3/245 , H03F3/45475 , H03F2200/211 , H03F2200/411 , H03F2203/45528 , H03F2203/45594 , H03G3/3068 , H03K3/356 , H04B1/3877 , H04B2001/0416
摘要： A communication device system includes a communication device (1) and a reception power monitoring device (2). The communication device (1) includes a reception processing unit (10) that outputs a signal intensity voltage (Vin) in accordance with a signal level of a received signal, and a monitoring terminal signal generator circuit (30) that generates a monitoring terminal signal (Vout) by current amplification of a level shift voltage generated by shifting a level of the signal intensity voltage (Vin) by an offset voltage (Voff) corresponding to a voltage value of a power supply voltage of an external device. The reception power monitoring device (2) includes a constant voltage generator circuit that outputs a constant voltage from the monitoring terminal signal (Vout), and a voltage converter circuit that operates based on the constant voltage and outputs a display level indication signal reflecting a voltage level of the monitoring terminal signal (Vout).

8. 发明申请

US20160028500A1 COMMUNICATION DEVICE, RECEPTION POWER MONITORING DEVICE, AND COMMUNICATION DEVICE SYSTEM 有权
标题翻译：通信设备，接收电力监控设备和通信设备系统
公开(公告)号：US20160028500A1
公开(公告)日：2016-01-28
申请号：US14774192
申请日：2014-02-06
申请人： NEC CORPORATION
发明人： Satoshi IINO
IPC分类号： H04B17/318 , H03K3/356
CPC分类号： H04B17/318 , H03F3/189 , H03F3/245 , H03F3/45475 , H03F2200/211 , H03F2200/411 , H03F2203/45528 , H03F2203/45594 , H03G3/3068 , H03K3/356 , H04B1/3877 , H04B2001/0416
摘要： A communication device system includes a communication device (1) and a reception power monitoring device (2). The communication device (1) includes a reception processing unit (10) that outputs a signal intensity voltage (Vin) in accordance with a signal level of a received signal, and a monitoring terminal signal generator circuit (30) that generates a monitoring terminal signal (Vout) by current amplification of a level shift voltage generated by shifting a level of the signal intensity voltage (Vin) by an offset voltage (Voff) corresponding to a voltage value of a power supply voltage of an external device. The reception power monitoring device (2) includes a constant voltage generator circuit that outputs a constant voltage from the monitoring terminal signal (Vout), and a voltage converter circuit that operates based on the constant voltage and outputs a display level indication signal reflecting a voltage level of the monitoring terminal signal (Vout).
摘要翻译：通信装置系统包括通信装置（1）和接收功率监视装置（2）。通信设备（1）包括：接收处理单元（10），其根据接收信号的信号电平输出信号强度电压（Vin）;以及监视终端信号发生器电路（30），其生成监视终端信号通过将信号强度电压（Vin）的电平移位与对应于外部设备的电源电压的电压值的偏移电压（Voff）产生的电平移位电压的电流放大来实现（Vout）。接收功率监视装置（2）包括从监视终端信号（Vout）输出恒定电压的恒压发生电路，以及基于该恒定电压进行动作的电压转换电路，输出反映电压的显示电平指示信号监视终端信号（Vout）的电平。

9. 发明授权

US08629724B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US08629724B2
公开(公告)日：2014-01-14
申请号：US13362716
申请日：2012-01-31
申请人： Youn Suk Kim , Jun Goo Won , Shinichi Iizuka , Ki Joong Kim
发明人： Youn Suk Kim , Jun Goo Won , Shinichi Iizuka , Ki Joong Kim
IPC分类号： H03F3/191
CPC分类号： H03F1/3205 , H03F1/56 , H03F3/19 , H03F2200/211 , H03F2200/213 , H03F2200/222
摘要： There is provided a power amplifier which may suppress fluctuations in a phase of an output signal in accordance with fluctuations in a level of an input signal by varying an impedance between a signal input terminal and an amplification unit in accordance with a power level of an input signal. The power amplifier includes a bias voltage generation unit generating a bias voltage set in accordance with a power level of an input signal, an amplification unit amplifying the power level of the input signal in accordance with the bias voltage, and an impedance variation unit varying an impedance of a signal transmission path through which the input signal is transmitted to the amplification unit in accordance with the bias voltage.
摘要翻译：提供了一种功率放大器，其可以根据输入信号的电平的波动来抑制输出信号的相位的波动，通过根据输入的功率电平改变信号输入端子和放大单元之间的阻抗信号。功率放大器包括：偏置电压产生单元，其生成根据输入信号的功率电平设定的偏置电压;放大单元，其根据偏置电压放大输入信号的功率电平;以及阻抗变化单元，根据偏置电压将输入信号传输到放大单元的信号传输路径的阻抗。

10. 发明授权

US08311243B2 Energy-efficient consumer device audio power output stage 有权
标题翻译：节能消费者设备音频功率输出阶段
公开(公告)号：US08311243B2
公开(公告)日：2012-11-13
申请号：US11610496
申请日：2006-12-13
申请人： John Christopher Tucker , Daniel John Allen , John L. Melanson , Ammisetti Prasad
发明人： John Christopher Tucker , Daniel John Allen , John L. Melanson , Ammisetti Prasad
IPC分类号： H03F99/00
CPC分类号： H03G3/004 , H02M3/07 , H03F1/0227 , H03F1/025 , H03F3/183 , H03F2200/03 , H03F2200/211 , H03F2200/507 , H03G3/20 , H03G3/3031
摘要： An energy-efficient consumer device audio power output stage provides improved battery life and reduced power dissipation. A power supply having a selectable operating mode supplies the power supply rails to the power amplified output stage. The operating mode is controlled in conformity with the audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The power supply may be a charge pump in which the operating mode uses a capacitive divider to provide for selection of a power supply output voltage that is a rational fraction of the power supply output voltage in a full-voltage operating mode.
摘要翻译：节能消费者设备音频功率输出级提供更好的电池寿命和更低的功耗。具有可选操作模式的电源将电源轨提供给功率放大输出级。操作模式根据音频信号电平进行控制，音频信号电平可以根据设备的音量控制设置和/或从确定被放大的信号的幅度的信号电平检测器确定。电源可以是电荷泵，其中操作模式使用电容分压器来提供在全电压工作模式下选择作为电源输出电压的有效部分的电源输出电压。

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