专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20180175809A1 POWER AMPLIFIER OPERATION 审中-公开
公开(公告)号：US20180175809A1
公开(公告)日：2018-06-21
申请号：US15843730
申请日：2017-12-15
申请人： Massachusetts Institute of Technology
发明人： Andrew H. Zai , Michael D. Lockard , Kenneth E. Kolodziej , Jeffrey S. Herd
IPC分类号： H03F1/32 , H03F3/24 , H04B1/04 , H04B1/403
CPC分类号： H03F1/3247 , H03F1/0222 , H03F1/0283 , H03F3/19 , H03F3/245 , H03F3/68 , H03F2200/102 , H03F2200/451 , H03F2201/3233 , H04B1/0458 , H04B1/0475 , H04B1/0483 , H04B1/406
摘要： Systems and methods for improving power amplifier operation are provided. A system may include a baseband signal generator communicatively coupled to a baseband signal digital-to-analog converter. The baseband signal digital-to-analog converter may be communicatively coupled to two or more power amplifiers. The system may also include an envelope signal generator communicatively coupled to an envelope signal digital-to-analog converter. The system may further include a supply modulator communicatively coupled to the envelope signal digital-to-analog converter and the two or more power amplifiers for shared envelope tracking across the two or more power amplifiers.

2. 发明授权

US09800208B2 Radio frequency devices with surface-mountable capacitors for decoupling and methods thereof 有权
公开(公告)号：US09800208B2
公开(公告)日：2017-10-24
申请号：US15044701
申请日：2016-02-16
申请人： Freescale Semiconductor, Inc.
发明人： Mahesh K. Shah , Jerry L. White , Li Li , Hussain H. Ladhani , Audel A. Sanchez , Lakshminarayan Viswanathan , Fernando A. Santos
IPC分类号： H03F1/00 , H03F1/02 , H03F3/195 , H03F3/213 , H03F1/56 , H03F3/21 , H03F1/30 , H03H1/00 , H01L23/31 , H01L23/495 , H01L23/66 , H03F3/193 , H05K7/00 , H01L23/64 , H03H7/38
CPC分类号： H03F1/0288 , H01L23/3107 , H01L23/49562 , H01L23/642 , H01L23/66 , H01L2223/665 , H01L2223/6655 , H01L2223/6666 , H01L2224/49175 , H01L2924/0002 , H03F1/0283 , H03F1/30 , H03F1/565 , H03F3/193 , H03F3/195 , H03F3/211 , H03F3/213 , H03F2200/267 , H03F2200/451 , H03F2200/555 , H03F2203/21103 , H03F2203/21106 , H03F2203/21139 , H03H1/00 , H03H7/38 , H03H2001/0021 , H05K7/005 , H01L2924/00
摘要： An embodiment of a radio-frequency (RF) device includes at least one transistor, a package, and a surface-mountable capacitor. The package contains the at least one transistor and includes at least one termination. The surface-mountable capacitor is coupled in a shunt configuration between the at least one transistor and a power supply terminal of the device to decouple the at least one transistor from a power supply.

3. 发明申请

US20170207752A1 AMPLIFIER WITH BASE CURRENT REUSE 审中-公开
公开(公告)号：US20170207752A1
公开(公告)日：2017-07-20
申请号：US15418434
申请日：2017-01-27
申请人： Skyworks Solutions, Inc.
发明人： Philip John Lehtola
IPC分类号： H03F1/02 , H03F3/21 , H03F1/56 , H03F3/19
CPC分类号： H03F1/0222 , H03F1/0211 , H03F1/0283 , H03F1/302 , H03F1/56 , H03F3/19 , H03F3/191 , H03F3/21 , H03F3/211 , H03F3/245 , H03F2200/102 , H03F2200/18 , H03F2200/222 , H03F2200/24 , H03F2200/318 , H03F2200/321 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03F2200/516 , H03F2203/21127
摘要： An RF amplifier module that has a plurality of amplifiers wherein at least one of the amplifiers is powered via an envelope tracking module. The biasing input of at least one of the amplifiers is provided to the first amplifier to power the first amplifier to reduce power consumption. The first amplifier may also be powered via fixed biasing to provide greater stability of the module.

4. 发明申请

US20170040957A1 POWER AMPLIFIER HAVING STACK STRUCTURE 有权
标题翻译：具有堆叠结构的功率放大器
公开(公告)号：US20170040957A1
公开(公告)日：2017-02-09
申请号：US15297159
申请日：2016-10-19
申请人： SOONGSIL UNIVERSITY RESEARCH CONSORTIUM TECHNO-PARK
发明人： Ho Yong HWANG , Chang Kun PARK
IPC分类号： H03F3/21 , H03F3/45 , H03F3/30 , H03F3/213 , H03F1/02
CPC分类号： H03F3/211 , H03F1/0283 , H03F3/195 , H03F3/213 , H03F3/245 , H03F3/3022 , H03F3/3028 , H03F3/45179 , H03F3/45237 , H03F2200/405 , H03F2200/408 , H03F2200/516 , H03F2203/45481 , H03F2203/45544 , H03F2203/45594 , H03F2203/45631
摘要： A power amplifier having a stack structure comprises a first driver stage that receives a power voltage from a power supply and receives and amplifies an input signal; a second driver stage that receives the power voltage from the power supply, has an input terminal connected with an output terminal of the first driver stage, and receives and amplifies an output signal from the first driver stage; and a power stage that has a power input terminal connected with a ground terminal of the first driver stage and a ground terminal of the second driver stage and receives a virtual ground voltage, and has an input terminal connected with an output terminal of the second driver stage and receives and amplifies an output signal from the second driver stage.
摘要翻译：具有堆叠结构的功率放大器包括：第一驱动级，其从电源接收电力电压并接收并放大输入信号; 从电源接收电源电压的第二驱动级，具有与第一驱动级的输出端连接的输入端，并接收并放大来自第一驱动级的输出信号; 以及功率级，其具有与第一驱动级的接地端子连接的电力输入端子和第二驱动级的接地端子，并接收虚拟接地电压，并且具有与第二驱动器的输出端子连接的输入端子并接收并放大来自第二驱动级的输出信号。

5. 发明授权

US08575968B2 Fast power up comparator 失效
标题翻译：快速上电比较器
公开(公告)号：US08575968B2
公开(公告)日：2013-11-05
申请号：US13323654
申请日：2011-12-12
申请人： Sasan Cyrusian
发明人： Sasan Cyrusian
IPC分类号： H03K5/22
CPC分类号： G06F1/3287 , G06F1/3234 , H03F1/0266 , H03F1/0272 , H03F1/0283 , H03F3/185 , H03F3/2173 , H03F3/2178 , H03F3/3022 , H03F3/3033 , H03F3/45183 , H03F3/4521 , H03F3/45475 , H03F3/72 , H03F2200/03 , H03F2200/264 , H03F2200/27 , H03F2200/321 , H03F2200/75 , H03F2200/78 , H03F2203/45466 , H03F2203/45471 , H03F2203/45504 , H03F2203/45506 , H03F2203/45512 , H03F2203/45674 , H03F2203/45726 , H03F2203/7203
摘要： A circuit method includes periodically increasing a tail current of a differential stage of a comparator to periodically power on the differential stage to a power-on state, and periodically decreasing the tail current of the differential stage to periodically power down the differential stage to a low-power state. The periodically increasing of the tail current and the periodically decreasing of the tail current are asynchronous operations for powering on the differential stage to the power-on state and powering down the differential stage to the low-power state. Periodically increasing the tail current and the periodically decreasing the tail current asynchronously for powering on the differential stage to the power-on state and powering down the differential stage to the low-power state provide for low noise and high speed during signal comparison.
摘要翻译：一种电路方法包括周期性地增加比较器的差分级的尾电流，以将差分级周期性地上电到上电状态，并且周期性地减小差分级的尾电流以周期性地将差分级降低到低电力状态。尾电流的周期性增加和尾电流的周期性减小是用于将差动级上电到上电状态的异步操作，并将差动级下电到低功率状态。周期性地增加尾电流和周期性地不同步地减小尾电流以使差动级上电到上电状态，并将差分级上电到低功率状态，在信号比较期间提供低噪声和高速度。

6. 发明授权

US08248151B2 Apparatus and method configured to provide electrical bias 有权
标题翻译：配置为提供电偏压的装置和方法
公开(公告)号：US08248151B2
公开(公告)日：2012-08-21
申请号：US12862171
申请日：2010-08-24
申请人： Jennifer Lloyd , Kimo Tam
发明人： Jennifer Lloyd , Kimo Tam
IPC分类号： G05F1/10
CPC分类号： H03F1/30 , H03F1/0283 , H03F2200/18 , H03K19/0008
摘要： As provided herein, in some embodiments, power consumption and/or chip area is reduced by bias circuits configured to provide bias conditions for more than one active circuit, thereby reducing the number of bias circuits in a design. Shared bias circuits may reduce the aggregate amount of on-chip area utilized by bias circuitry and may also reduce the total power consumption of a chip. Additionally and/or alternatively, bias circuits disclosed herein are configured to provide outputs that are less susceptible to changes in the voltage supply level. In particular, in some embodiments, bias circuits are configured to provide relatively constant bias conditions despite changes in the voltage supply level. A bias circuit arrangement with an output substantially decoupled from changes in the voltage supply level may provide a more stable operating point in an active circuit. In some embodiments, bias circuits are configured to provide bias conditions that compensate for perturbations caused by changes other inputs, in order to stabilize a particular operating point.
摘要翻译：如本文所提供的，在一些实施例中，通过被配置为为多于一个有源电路提供偏置条件的偏置电路来降低功耗和/或芯片面积，从而减少设计中偏置电路的数量。共享偏置电路可以减少由偏置电路使用的片上区域的总量，并且还可以降低芯片的总功耗。附加地和/或替代地，本文公开的偏置电路被配置为提供对电压供应电平的变化较不敏感的输出。特别地，在一些实施例中，偏置电路被配置为提供相对恒定的偏置条件，尽管电压电平的变化。具有与电压供应电平的变化基本上分离的输出的偏置电路装置可以在有源电路中提供更稳定的工作点。在一些实施例中，偏置电路被配置为提供补偿由改变其他输入引起的扰动的偏置条件，以便稳定特定的工作点。

7. 发明申请

US20110050340A1 SYSTEM AND METHOD FOR AMPLIFYING A SIGNAL USING MULTIPLE AMPLIFICATION STAGES SHARING A COMMON BIAS CURRENT 有权
标题翻译：使用多个扩展阶段放大信号的系统和方法共享公共偏置电流
公开(公告)号：US20110050340A1
公开(公告)日：2011-03-03
申请号：US12558110
申请日：2009-09-11
申请人： Bo Sun , Anthony F. Segoria
发明人： Bo Sun , Anthony F. Segoria
IPC分类号： H03F1/00
CPC分类号： H03F1/301 , H03F1/0283 , H03F3/191 , H03F3/45183 , H03F2203/45544 , H03F2203/45562 , H03F2203/45652 , H04B2001/6908
摘要： An apparatus including cascaded amplification stages adapted to be biased by a common DC current to generate an amplified output signal from an input signal. A first amplification stage includes a routing network to substantially double an input voltage signal, and a first transconductance gain stage to generate a first current signal from the input voltage signal. A second amplification stage includes a resonator to convert the first current signal into a second voltage signal, and a second transconductance gain stage to generate a second current signal from the first current signal. A third amplification stage includes a current gain stage to generate a third current signal from the second current signal, and a load through which the third current signal flows to generate the output signal.
摘要翻译：一种包括级联放大级的装置，其适于被公共DC电流偏置以从输入信号产生放大的输出信号。第一放大级包括使输入电压信号基本上加倍的布线网络以及从输入电压信号产生第一电流信号的第一跨导增益级。第二放大级包括将第一电流信号转换成第二电压信号的谐振器和由第一电流信号产生第二电流信号的第二跨导增益级。第三放大级包括从第二电流信号产生第三电流信号的电流增益级和第三电流信号通过该负载产生输出信号的负载。

8. 发明授权

US07729672B2 Dynamic bias control in power amplifier 失效
标题翻译：功率放大器中的动态偏置控制
公开(公告)号：US07729672B2
公开(公告)日：2010-06-01
申请号：US11683913
申请日：2007-03-08
申请人： Junxiong Deng , Prasad Gudem
发明人： Junxiong Deng , Prasad Gudem
IPC分类号： H04B1/04 , H04M1/00
CPC分类号： H03F1/0277 , H03F1/0283 , H03F2200/294 , H03F2200/372
摘要： An RF output power amplifier (PA) of a cellular telephone includes first and second Class AB amplifier circuits. If the cellular telephone is to operate in a high power operating mode, then the first amplifier drives the PA output terminal. The power transistor(s) in the first amplifier is/are biased at a first DC current and a first DC voltage so as to optimize efficiency and linearity at high output powers. If the cellular telephone is to operate in a low power operating mode, then the second amplifier drives the output terminal. The power transistor(s) in the second amplifier is/are biased at a second DC current and a second DC voltage so as to optimize efficiency and linearity at low output powers. By sizing the power transistors in the amplifiers appropriately, emitter current densities are maintained substantially equal so that PA power gain is the same in the two operating modes.
摘要翻译：蜂窝电话的RF输出功率放大器（PA）包括第一和第二AB类放大器电路。如果蜂窝电话要在高功率操作模式下工作，则第一放大器驱动PA输出端。第一放大器中的功率晶体管被偏置在第一直流电流和第一直流电压上，以便在高输出功率下优化效率和线性度。如果蜂窝电话要在低功率操作模式下工作，则第二放大器驱动输出端。第二放大器中的功率晶体管被以第二直流电流和第二直流电压偏置，以便在低输出功率下优化效率和线性度。通过适当地调整放大器中的功率晶体管的尺寸，发射极电流密度保持基本相等，使PA功率增益在两种工作模式下相同。

9. 发明申请

US20090085664A1 POWER AMPLIFIER HAVING AN ADAPTIVE AMPLIFYING MECHANISM 审中-公开
标题翻译：具有自适应放大机构的功率放大器
公开(公告)号：US20090085664A1
公开(公告)日：2009-04-02
申请号：US11864916
申请日：2007-09-29
申请人： Po-Tang Yang , Rui-Ling Lai
发明人： Po-Tang Yang , Rui-Ling Lai
IPC分类号： H03F3/16 , H03F1/22
CPC分类号： H03F1/0261 , H03F1/0283 , H03F1/223 , H03F1/56 , H03F3/193 , H03F2200/387 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03F2200/451
摘要： By making use of two common-source amplifying units having a shared DC bias in conjunction with two current units or an extra amplifying unit, a power amplifier is capable of providing a high output power in a high power-gain operation and achieving a low power biasing consumption in a low power-gain operation. The two current units are utilized to provide auxiliary bias currents for diverting part of two bias currents corresponding to the shared DC bias for the two amplifying units so that the output power can be boosted in the high power-gain operation. Also, the extra amplifying unit can be coupled in series with the two amplifying units for improving the output power of the power amplifier in the high power-gain operation. The shared DC bias provides same bias current to the two amplifying units for achieving the low power biasing consumption in the low power-gain operation.
摘要翻译：通过利用具有共享DC偏置的两个共源极放大单元结合两个电流单元或额外的放大单元，功率放大器能够在高功率增益操作中提供高输出功率并实现低功率在低功率增益操作中偏置消耗。两个电流单元用于提供辅助偏置电流，用于转换对应于两个放大单元的共享DC偏置的两个偏置电流的一部分，使得在高功率增益操作中可以提高输出功率。此外，额外的放大单元可以与两个放大单元串联耦合，以在高功率增益操作中提高功率放大器的输出功率。共享DC偏置为两个放大单元提供相同的偏置电流，以实现低功率增益操作中的低功率偏置消耗。

10. 发明申请

US20070222519A1 Dynamic Bias Control in Power Amplifier 失效
标题翻译：功率放大器动态偏置控制
公开(公告)号：US20070222519A1
公开(公告)日：2007-09-27
申请号：US11683913
申请日：2007-03-08
申请人： Junxiong Deng , Prasad Gudem
发明人： Junxiong Deng , Prasad Gudem
IPC分类号： H03G3/10
CPC分类号： H03F1/0277 , H03F1/0283 , H03F2200/294 , H03F2200/372
摘要： An RF output power amplifier (PA) of a cellular telephone includes first and second Class AB amplifier circuits. If the cellular telephone is to operate in a high power operating mode, then the first amplifier drives the PA output terminal. The power transistor(s) in the first amplifier is/are biased at a first DC current and a first DC voltage so as to optimize efficiency and linearity at high output powers. If the cellular telephone is to operate in a low power operating mode, then the second amplifier drives the output terminal. The power transistor(s) in the second amplifier is/are biased at a second DC current and a second DC voltage so as to optimize efficiency and linearity at low output powers. By sizing the power transistors in the amplifiers appropriately, emitter current densities are maintained substantially equal so that PA power gain is the same in the two operating modes.
摘要翻译：蜂窝电话的RF输出功率放大器（PA）包括第一和第二AB类放大器电路。如果蜂窝电话要在高功率操作模式下工作，则第一放大器驱动PA输出端。第一放大器中的功率晶体管被偏置在第一直流电流和第一直流电压上，以便在高输出功率下优化效率和线性度。如果蜂窝电话要在低功率操作模式下工作，则第二放大器驱动输出端。第二放大器中的功率晶体管被以第二直流电流和第二直流电压偏置，以便在低输出功率下优化效率和线性度。通过适当地调整放大器中的功率晶体管的尺寸，发射极电流密度保持基本相等，使PA功率增益在两种工作模式下相同。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式