公开(公告)号：US09602066B2

公开(公告)日：2017-03-21

申请号：US14404135

申请日：2014-03-20

申请人： PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

发明人： Isao Imazeki ,  Masaki Kanemaru

IPC分类号： H03F1/14 ,  H03F3/193 ,  H03F1/22 ,  H03F3/21 ,  H03F3/45

CPC分类号： H03F3/193 ,  H03F1/223 ,  H03F3/211 ,  H03F3/45179 ,  H03F2200/09 ,  H03F2200/222 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2203/45394 ,  H03F2203/45644

摘要： A polarity-switching amplifier circuit includes: a first amplifying transistor and a second amplifying transistor, a transformer which includes a primary winding and a secondary winding, and a polarity-switching controller. An unbalanced input signal is input to the first amplifying transistor and the second amplifying transistor. The transformer receives an output signal of the first amplifying transistor and an output signal of the second amplifying transistor as a balanced signal input to the primary winding, and outputs a signal from the secondary winding. The polarity-switching controller turns on one of the first amplifying transistor and the second amplifying transistor and turns off the other thereof.

公开(公告)号：US09564858B2

公开(公告)日：2017-02-07

申请号：US15016970

申请日：2016-02-05

申请人： SOCIONEXT INC.

发明人： Takafumi Nasu ,  Shinichiro Uemura ,  Atsushi Ohara

IPC分类号： H03F3/04 ,  H01P7/00 ,  H03F1/02 ,  H03F3/191 ,  H03H5/00 ,  H03J5/02 ,  H03F1/32 ,  H03F3/45 ,  H03F3/193 ,  H03H11/04

CPC分类号： H03F1/0205 ,  H03F1/3211 ,  H03F3/191 ,  H03F3/193 ,  H03F3/45179 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/45394 ,  H03F2203/45631 ,  H03F2203/45634 ,  H03F2203/45638 ,  H03F2203/45644 ,  H03F2203/45658 ,  H03F2203/45688 ,  H03F2203/45694 ,  H03F2203/45696 ,  H03F2203/45712 ,  H03F2203/45714 ,  H03F2203/45718 ,  H03F2203/45726 ,  H03H5/00 ,  H03H11/04 ,  H03J5/02 ,  H03J2200/10

摘要： A parallel resonant circuit with excellent distortion and saturation characteristics is provided at low power consumption. A first power-supply voltage is applied to the parallel resonant circuit. In the parallel resonant circuit, a variable resistor includes one or more parallel-connected branches. Each of the branches includes a series circuit of a resistor and a MOS switch. A second power supply supplies power of control signals applied to respective gates of the MOS switches, and supplies back gate voltages to the MOS switches. A power-supply voltage of the second power supply is higher than the first power-supply voltage.

摘要翻译： 在低功耗下提供具有优异失真和饱和特性的并联谐振电路。 第一电源电压被施加到并联谐振电路。 在并联谐振电路中，可变电阻器包括一个或多个并联连接的分支。 每个分支包括电阻器和MOS开关的串联电路。 第二电源提供施加到MOS开关的各个门的控制信号的电源，并向MOS开关提供反向栅极电压。 第二电源的电源电压高于第一电源电压。

公开(公告)号：US09515685B2

公开(公告)日：2016-12-06

申请号：US14249796

申请日：2014-04-10

申请人： Broadcom Corporation

发明人： Juhani Kalervo Aalto ,  Jari Johannes Heikkinen

IPC分类号： H04B1/04 ,  H03F1/22 ,  H03F1/32 ,  H03F3/24 ,  H03F3/45

CPC分类号： H04B1/0475 ,  H03F1/223 ,  H03F1/3241 ,  H03F3/245 ,  H03F3/45179 ,  H03F2203/45394 ,  H03F2203/45512 ,  H03F2203/45528 ,  H04B2001/0425

摘要： Apparatus and a method for predistortion of a radio-frequency signal are described. At least one predistortion unit is described that is arranged to receive an analog baseband signal before amplification and to generate an analog predistortion signal based on said analog baseband signal. At least one mixer unit is also described and may be electrically coupled to the at least one predistortion unit. In this case, the at least one mixer unit is arranged to receive the analog baseband signal before amplification and the analog predistortion signal and to generate a weighted combination of said signals.

摘要翻译： 描述了用于射频信号预失真的装置和方法。 描述了至少一个预失真单元，其被布置为在放大之前接收模拟基带信号，并且基于所述模拟基带信号生成模拟预失真信号。 还描述了至少一个混合器单元，并且可以电耦合到至少一个预失真单元。 在这种情况下，至少一个混频器单元布置成在放大之前接收模拟基带信号和模拟预失真信号，并产生所述信号的加权组合。

公开(公告)号：US20160261243A1

公开(公告)日：2016-09-08

申请号：US14640978

申请日：2015-03-06

申请人： APPLE INC.

发明人： Ehsan Adabi ,  Albert C. Jerng

IPC分类号： H03F3/217 ,  H03F3/19 ,  H03F3/21 ,  H04B1/04

CPC分类号： H03F3/217 ,  H03F1/0222 ,  H03F3/19 ,  H03F3/193 ,  H03F3/211 ,  H03F3/2173 ,  H03F3/2178 ,  H03F3/24 ,  H03F3/245 ,  H03F3/45179 ,  H03F2200/451 ,  H03F2203/45352 ,  H03F2203/45366 ,  H03F2203/45394 ,  H03F2203/45562 ,  H03F2203/45631 ,  H03F2203/45638 ,  H04B1/04 ,  H04B2001/0408

摘要： Systems and method for improving operation of a radio frequency system are provided. One embodiment describes a radio frequency system, which includes a first switching power amplifier that outputs an amplified analog electrical signal based on a first input analog electrical signal and voltage of an envelope voltage supply rail. The first switching power amplifier includes a first transistor with a gate that receives the first input analog electrical signal, a source that is electrically coupled to the envelope voltage supply rail, and a drain that is electrically coupled to an output of the first switching power amplifier; a second transistor with a gate that receives the first input analog electrical signal, a source electrically coupled to ground, and a drain electrically coupled to the output of the first switching power amplifier; and a third transistor with a gate that receives the first input analog electrical signal, a drain electrically coupled to the envelope voltage supply rail, and a source electrically coupled to an output of a second switching power amplifier.

摘要翻译： 提供了改善射频系统操作的系统和方法。 一个实施例描述了一种射频系统，其包括基于第一输入模拟电信号和包络电压电源轨的电压输出放大的模拟电信号的第一开关功率放大器。 第一开关功率放大器包括具有接收第一输入模拟电信号的栅极的第一晶体管，电耦合到包络电压源轨的源，以及与第一开关功率放大器的输出电耦合的漏极 ; 第二晶体管，其具有接收第一输入模拟电信号的栅极，电耦合到地的源极和与第一开关功率放大器的输出电耦合的漏极; 以及第三晶体管，其具有接收第一输入模拟电信号的栅极，电耦合到包络电压源导轨的漏极，以及电耦合到第二开关功率放大器的输出的源极。

公开(公告)号：US20160173036A1

公开(公告)日：2016-06-16

申请号：US14955969

申请日：2015-12-01

申请人： STMicroelectronics SA

发明人： Lionel Vogt ,  Baudouin Martineau ,  Aurelien Larie

IPC分类号： H03F1/02 ,  H03F3/193 ,  H03F3/21

CPC分类号： H03F1/0205 ,  H03F1/0261 ,  H03F3/193 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/45179 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/516 ,  H03F2203/21106 ,  H03F2203/45394

摘要： An amplifier includes at least two amplification stages coupled in parallel. Each amplification stage includes at differential pair of amplifying MOS transistors having gates connected to a first and second input nodes common to amplifying stages, and bulk regions connected to each other but insulated from bulk regions of the amplifying MOS transistors of the other amplification stages. A configuration circuit generates bias voltage for application to the bulk terminals in each amplification stage to set the threshold voltages of the amplifying MOS transistors, and thus configuring the operating range of each amplification stage so that different amplification stages have different operating ranges.

摘要翻译： 放大器包括并联耦合的至少两个放大级。 每个放大级包括在具有连接到放大级共同的第一和第二输入节点的栅极的差分对放大MOS晶体管和彼此连接但与其它放大级的放大MOS晶体管的体区绝缘的体区域。 配置电路产生用于施加到每个放大级中的批量端子的偏压，以设置放大MOS晶体管的阈值电压，从而构成每个放大级的工作范围，使得不同的放大级具有不同的工作范围。

公开(公告)号：US09369091B2

公开(公告)日：2016-06-14

申请号：US14275077

申请日：2014-05-12

申请人： NATIONAL SUN YAT-SEN UNIVERSITY

发明人： Tzyy-Sheng Horng ,  Rong-Fu Ye ,  Jian-Ming Wu

IPC分类号： H03F3/45 ,  H03F1/26 ,  H03F1/56 ,  H03F3/193

CPC分类号： H03F1/26 ,  H03F1/565 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/117 ,  H03F2200/129 ,  H03F2200/222 ,  H03F2200/267 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45394 ,  H03F2203/45544 ,  H03F2203/45562 ,  H03F2203/45621 ,  H03F2203/45638 ,  H03F2203/45702 ,  H03F2203/45731

摘要： A dual feedback low noise amplifier includes a negative-feedback capacitive mutual-coupled common-gate amplifier of parallel-input parallel-output (PIPO) composed of a first transistor, a second transistor, a first coupling capacitor and a second coupling capacitor and a positive-feedback common-gate amplifier of parallel-input parallel-output (PIPO) composed of the first transistor, the second transistor, a first transformer and a second transformer. By means of dual feedback, the transconductance gain of the dual feedback low noise amplifier is increased, and the noise figure of the dual feedback low noise amplifier is decreased.

摘要翻译： 双反馈低噪声放大器包括由第一晶体管，第二晶体管，第一耦合电容器和第二耦合电容器组成的并行输入并行输出（PIPO）的负反馈电容互耦合共栅放大器，以及 由第一晶体管，第二晶体管，第一变压器和第二变压器组成的并行输入并行输出（PIPO）的正反馈共栅放大器。 通过双反馈，双反馈低噪声放大器的跨导增益增加，双反馈低噪声放大器的噪声系数降低。

公开(公告)号：US20160112222A1

公开(公告)日：2016-04-21

申请号：US14923709

申请日：2015-10-27

申请人： Intel Corporation

发明人： Majid Pashay-Kojouri ,  Richard Maiden

IPC分类号： H04L25/49

CPC分类号： H04L25/49 ,  H03F1/3241 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/405 ,  H03F2203/45318 ,  H03F2203/45332 ,  H03F2203/45394 ,  H04B15/00 ,  H04L25/03343 ,  H04L25/03834 ,  H04L27/2614 ,  H04L27/367 ,  H04L2025/03414 ,  H04L2025/03503

摘要： A digital predistorter for improving the performance of a narrow passband filter near the output is disclosed. The digital predistorter provides amplitude correction to the signal based on the characteristics of the passband filter. A filter group delay predistorter may also be employed to correct group delay variation introduced by the narrow passband filter.

公开(公告)号：US09306513B2

公开(公告)日：2016-04-05

申请号：US14155622

申请日：2014-01-15

申请人： Broadcom Corporation

发明人： Jouni Kristian Kaukovuori ,  Jonne Riekki ,  Jari Heikkinen

IPC分类号： H03F3/04 ,  H03F3/68 ,  H03F3/193 ,  H03F3/195 ,  H03F3/72 ,  H04B1/00 ,  H04B1/48 ,  H03F1/02 ,  H03F1/22 ,  H03F3/24 ,  H03F3/45

CPC分类号： H03F3/193 ,  H03F1/0277 ,  H03F1/223 ,  H03F3/195 ,  H03F3/24 ,  H03F3/45183 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2203/45352 ,  H03F2203/45394 ,  H03F2203/45544 ,  H03F2203/45554 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03F2203/45644 ,  H03F2203/45731 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7215 ,  H03F2203/7236 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/48

摘要： A low noise amplifier for radio frequency integrated circuits having an adaptive input and operating mode selection. The low noise amplifier comprises two inputs which can be operated in different configurations. The operating mode may be chosen in such way that the inputs are used respectively one at the time for single-ended configuration or both inputs are used for differential configuration. Additionally, in single-ended operation, inputs can be matched to different frequencies. The information regarding the operating mode is obtained from an external component. The operating mode to be used may be determined when the device using a particular radio frequency integrated circuit is designed or it can be determined dynamically by the device using the radio frequency integrated circuit.

摘要翻译： 一种用于具有自适应输入和操作模式选择的射频集成电路的低噪声放大器。 低噪声放大器包括可以以不同配置操作的两个输入。 可以以这样的方式选择操作模式，以便在单端配置时分别使用输入，或者两个输入用于差分配置。 另外，在单端操作中，输入可以匹配不同的频率。 关于操作模式的信息是从外部组件获得的。 当使用特定射频集成电路的设备被设计时或者可以由使用射频集成电路的设备动态地确定时，可以确定要使用的操作模式。

公开(公告)号：US09276529B1

公开(公告)日：2016-03-01

申请号：US14506070

申请日：2014-10-03

申请人： HRL Laboratories, LLC

发明人： David F. Brown ,  Miroslav Micovic ,  Ara K. Kurdoghlian ,  Alexandros Margomenos

IPC分类号： H03F3/45 ,  H03F1/48 ,  H03F3/193 ,  H03F3/68

CPC分类号： H03F3/45179 ,  H03F3/193 ,  H03F3/195 ,  H03F3/45183 ,  H03F2200/408 ,  H03F2200/451 ,  H03F2203/45051 ,  H03F2203/45394 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45644 ,  H03F2203/45648 ,  H03F2203/45652

摘要： An operational amplifier includes three transconductance stages (TSs) each having a differential input and a differential output, a first and second resistor coupled between the differential output of the first TS and the differential input of the first TS, a third and fourth resistor coupled between the differential output of the third TS and the differential input of the first TS, a first and second capacitor coupled between the differential output of the third TS and the differential input of the third TS, wherein the first, second, and third TSs each include a differential input amplifier coupled to the differential input of the respective TS, a differential output amplifier coupled to the differential output of the respective TS, and a plurality of Schottky diodes coupled between the differential input amplifier and the differential output amplifier for voltage level shifting.

摘要翻译： 运算放大器包括三个跨导级（TS），每个跨导级具有差分输入和差分输出;耦合在第一TS的差分输出和第一TS的差分输入之间的第一和第二电阻，耦合在第一TS的差分输出之间的第三和第四电阻 第三TS的差分输出和第一TS的差分输入，耦合在第三TS的差分输出与第三TS的差分输入之间的第一和第二电容器，其中第一，第二和第三TS各自包括 耦合到相应TS的差分输入的差分输入放大器，耦合到相应TS的差分输出的差分输出放大器以及耦合在差分输入放大器和用于电压电平转换的差分输出放大器之间的多个肖特基二极管。

公开(公告)号：US09210009B2

公开(公告)日：2015-12-08

申请号：US13618607

申请日：2012-09-14

申请人： Majid Pashay-Kojouri ,  Richard Maiden

发明人： Majid Pashay-Kojouri ,  Richard Maiden

IPC分类号： H04B15/00 ,  H04L25/03 ,  H04L27/26 ,  H03F3/193 ,  H03F3/45 ,  H04L27/36 ,  H03F1/32

CPC分类号： H04L25/49 ,  H03F1/3241 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/405 ,  H03F2203/45318 ,  H03F2203/45332 ,  H03F2203/45394 ,  H04B15/00 ,  H04L25/03343 ,  H04L25/03834 ,  H04L27/2614 ,  H04L27/367 ,  H04L2025/03414 ,  H04L2025/03503

摘要： A digital predistorter for improving the performance of a narrow passband filter near the output is disclosed. The digital predistorter provides amplitude correction to the signal based on the characteristics of the passband filter. A filter group delay predistorter may also be employed to correct group delay variation introduced by the narrow passband filter.

摘要翻译： 公开了一种用于改善输出附近的窄通带滤波器的性能的数字预失真器。 数字预失真器基于通带滤波器的特性向信号提供幅度校正。 还可以采用滤波器组延迟预失真器来校正由窄通带滤波器引入的群延迟变化。