公开(公告)号：US20230361731A1

公开(公告)日：2023-11-09

申请号：US17738842

申请日：2022-05-06

申请人： Analog Devices International Unlimited Company

发明人： Qingyi Huang ,  Yong Zhang ,  Mark Cope ,  Bernhard Strzalkowski

IPC分类号： H03F3/72 ,  H03F3/24 ,  H03F1/02

CPC分类号： H03F3/245 ,  H03F1/0227 ,  H03F3/72 ,  H03F2203/7206

摘要： Various examples are directed to a circuit for biasing a power amplifier (PA). The circuit may comprise a first isolated power supply comprising a first DC output and a first common output as well as a second isolated power supply comprising a second DC output and a second common output. The second DC output may be electrically coupled to the first common output. The circuit may also comprise a switch network that is configurable to a first state in which the first DC output is provided at a circuit output and to a second state in which the second DC output is provided at the circuit output.

公开(公告)号：US10079574B2

公开(公告)日：2018-09-18

申请号：US15019409

申请日：2016-02-09

申请人： MediaTek Inc.

发明人： Hsing-ting Yu ,  Fei Song ,  I-Chang Wu ,  YuenHui Chee ,  Chiyuan Lu ,  Keng Leong Fong ,  Osama K. A. Shana'a

IPC分类号： H03F3/45 ,  H03F1/02 ,  H03F3/193 ,  H03F3/21

CPC分类号： H03F1/0222 ,  H03F1/0261 ,  H03F1/0266 ,  H03F1/0277 ,  H03F1/0288 ,  H03F1/48 ,  H03F3/193 ,  H03F3/211 ,  H03F3/245 ,  H03F3/45 ,  H03F3/45071 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/36 ,  H03F2200/435 ,  H03F2200/451 ,  H03F2200/453 ,  H03F2200/465 ,  H03F2200/555 ,  H03F2203/21106 ,  H03F2203/45311 ,  H03F2203/45352 ,  H03F2203/45368 ,  H03F2203/45544 ,  H03F2203/45674 ,  H03F2203/7206

摘要： Methods and apparatus for providing adaptive biasing to power amplifiers. Adaptive bias circuits are configured to provide sharp turn on and/or current clamping to improve the efficiency of a power amplifier over a wide input signal bandwidth. Sharp turn on may be achieved using a subtraction technique to subtract outputs from multiple detectors. Clamping may be achieved using MOSFET device characteristics to pull the device from the triode region into the saturation, subtraction techniques to subtract the outputs from multiple detectors, and/or by using circuit devices, such as diodes.

公开(公告)号：US09825596B2

公开(公告)日：2017-11-21

申请号：US15005486

申请日：2016-01-25

申请人： ANALOG DEVICES, INC

发明人： Sriram Muralidharan ,  Christopher E. Hay

IPC分类号： H03F1/14 ,  H03F1/56 ,  H03F3/217 ,  H03F3/19

CPC分类号： H03F1/56 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/211 ,  H03F3/217 ,  H03F3/2171 ,  H03F3/72 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2203/21109 ,  H03F2203/21131 ,  H03F2203/21142 ,  H03F2203/7206 ,  H03F2203/7236

摘要： Various embodiments of switched amplifiers are disclosed herein. In some embodiments, a switched amplifier may include a first amplifier; a second amplifier; an input matching network common to both the first and second amplifiers; and at least one switch to couple an input of the switched amplifier, via the input matching network, to one of the first amplifier or the second amplifier. In some embodiments, a switched amplifier may include a first amplifier; a second amplifier; an input matching network common to both the first and second amplifiers or an output matching network common to both the first and second amplifiers; and a bias generation circuit to selectively (1) provide a first bias current to the first amplifier or (2) provide a second bias current to the second amplifier, wherein the second bias current is less than the first bias current.

公开(公告)号：US20170264250A1

公开(公告)日：2017-09-14

申请号：US15068179

申请日：2016-03-11

申请人： Intel Corporation

发明人： Jong Seok Park ,  Yanjie J. Wang ,  Stefano Pellerano ,  Christopher D. Hull

IPC分类号： H03F1/32 ,  H03F3/193 ,  H04L27/34 ,  H03F3/21 ,  H03F3/68 ,  H04B1/04 ,  H03F1/56 ,  H03F3/24

CPC分类号： H03F1/3205 ,  H03F1/0261 ,  H03F1/0277 ,  H03F1/223 ,  H03F1/565 ,  H03F3/189 ,  H03F3/193 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/45188 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/162 ,  H03F2200/18 ,  H03F2200/387 ,  H03F2200/423 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2201/3203 ,  H03F2203/21139 ,  H03F2203/21142 ,  H03F2203/21178 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7236 ,  H04B1/04 ,  H04B2001/0408 ,  H04L27/34

摘要： A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. A output passive network can further generate a flat-phase response between dual resonances of operation.

公开(公告)号：US20170141741A1

公开(公告)日：2017-05-18

申请号：US15419431

申请日：2017-01-30

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Anthony Francis Quaglietta

IPC分类号： H03F1/52 ,  H03F3/21 ,  H04B1/40 ,  H03F3/193

CPC分类号： H03F1/523 ,  H03F1/0261 ,  H03F3/193 ,  H03F3/195 ,  H03F3/21 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/129 ,  H03F2200/27 ,  H03F2200/294 ,  H03F2200/321 ,  H03F2200/336 ,  H03F2200/411 ,  H03F2200/426 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2200/481 ,  H03F2200/511 ,  H03F2200/516 ,  H03F2200/78 ,  H03F2203/7203 ,  H03F2203/7206 ,  H04B1/40

摘要： Provided herein are apparatus and methods for protecting radio frequency (RF) amplifiers from overdrive. In certain configurations, an RF amplification system includes a plurality of RF amplification stages including a first amplification stage and a second amplification stage subsequent to the first amplification stage in a signal path. The first amplification stage includes a first stage field-effect transistor (FET), and the second amplification stage includes a second stage FET and a gate-to-drain feedback circuit electrically connected between a gate and a drain of the second stage FET. The RF amplification system further includes an overdrive detection circuit that senses a drain current of the first stage FET to detect when an overdrive condition is present, and that decreases an impedance of the gate-to-drain feedback circuit in response to detection of the overdrive condition such that a gain of the second stage FET is reduced.

公开(公告)号：US09641139B2

公开(公告)日：2017-05-02

申请号：US14922208

申请日：2015-10-26

申请人： MEDIATEK INC.

发明人： Chi-Yao Yu ,  Chung-Yun Chou

IPC分类号： H04B1/06 ,  H03F3/68 ,  H03F3/193 ,  H03F1/02 ,  H03F1/22 ,  H03F3/21 ,  H03F3/72 ,  H04B1/04

CPC分类号： H03F3/193 ,  H03F1/0277 ,  H03F1/223 ,  H03F3/211 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/129 ,  H03F2200/144 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/54 ,  H03F2200/75 ,  H03F2200/87 ,  H03F2203/21142 ,  H03F2203/21154 ,  H03F2203/21175 ,  H03F2203/7206 ,  H03F2203/7236 ,  H04B1/04 ,  H04B2001/0416

摘要： An amplifier applicable to an intra-band non-contiguous carrier aggregation (NCCA) band includes a first amplifier circuit and a second amplifier circuit. The NCCA band includes at least a primary component carrier (PCC) channel and a secondary component carrier (SCC) channel not adjacent to each other. The first amplifier circuit receives a first input signal, and generates a first output signal for undergoing down-conversion of one of the PCC channel and the SCC channel. The second amplifier circuit receives at least one second input signal, and generates a second output signal for undergoing down-conversion of another of the PCC channel and the SCC channel. The at least one second input signal received by the second amplifier circuit is provided by the first amplifier circuit according to the first input signal.

公开(公告)号：US09614575B2

公开(公告)日：2017-04-04

申请号：US12385915

申请日：2009-04-23

申请人： Ramon Gomez ,  Giuseppe Cusmai ,  Jianhong Xiao ,  Takayuki Hayashi ,  Young Shin

发明人： Ramon Gomez ,  Giuseppe Cusmai ,  Jianhong Xiao ,  Takayuki Hayashi ,  Young Shin

IPC分类号： H04B1/58 ,  H03F1/02 ,  H03F3/195 ,  H03F3/21 ,  H03F3/24 ,  H03F3/45 ,  H03F3/72

CPC分类号： H04B1/58 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/4508 ,  H03F3/45085 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/09 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21191 ,  H03F2203/21196 ,  H03F2203/45136 ,  H03F2203/45138 ,  H03F2203/45352 ,  H03F2203/45702 ,  H03F2203/7203 ,  H03F2203/7206 ,  H03F2203/7236

摘要： A method and apparatus is disclosed to couple a transmission amplifier and a reception amplifier to a shared medium. An output of the transmission amplifier is directly coupled to an input of the reception amplifier to form a common connection. The transmission amplifier and the reception amplifier may receive a first amplifier bias via the common connection. In response to the first amplifier bias, the transmission amplifier provides a first communication signal to the shared medium and the reception amplifier does not provide a second communication signal from the shared medium. Alternatively, the transmission amplifier and the reception may receive a second amplifier bias via the common connection. In response to the second amplifier bias, the reception amplifier provides the second communication signal from the shared medium and the transmission amplifier does not provide the first communication signal to the shared medium.

公开(公告)号：US09515622B2

公开(公告)日：2016-12-06

申请号：US14581890

申请日：2014-12-23

申请人： Nokia Corporation

发明人： Markus Nentwig ,  Mikko Kaltiokallio

IPC分类号： H03F3/68 ,  H03F3/21 ,  H03F3/19 ,  H03F1/02 ,  H03F3/195 ,  H03F3/24 ,  H03F3/72

CPC分类号： H03F3/211 ,  H03F1/0222 ,  H03F1/0266 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/03 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/111 ,  H03F2200/27 ,  H03F2200/411 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2203/21196 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7227 ,  H03F2203/7236

摘要： In some example embodiments, there is provided an apparatus. The apparatus may include a direct current voltage source and/or an alternating current voltage source to track a power envelope of a radio frequency signal. The apparatus may further include first and second power amplifiers with bias voltage inputs and a supply voltage inputs, and a switch matrix. The first input may be coupled to the direct current voltage source, the second input may be coupled to the alternating current voltage source. The outputs may be coupled to the bias and supply inputs to the power amplifiers. The switch matrix may enable activation of the first power amplifier, the second power amplifier, both the first and second power amplifiers, or neither power amplifier.

摘要翻译： 在一些示例性实施例中，提供了一种装置。 该装置可以包括直流电压源和/或交流电压源以跟踪射频信号的功率包络。 该装置还可以包括具有偏置电压输入和电源电压输入的第一和第二功率放大器以及开关矩阵。 第一输入可以耦合到直流电压源，第二输入可以耦合到交流电压源。 输出可以耦合到功率放大器的偏置和电源输入。 开关矩阵可以使得能够激活第一功率放大器，第二功率放大器，第一和第二功率放大器，或者两个功率放大器。

公开(公告)号：US20150381124A1

公开(公告)日：2015-12-31

申请号：US14320071

申请日：2014-06-30

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Christophe M. JOLY ,  Xiaodong XU ,  Eric Joseph LAI

IPC分类号： H03F3/19 ,  H03F3/21

CPC分类号： H03F1/0222 ,  H03F1/0277 ,  H03F1/56 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F3/60 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/204 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7236 ,  H04B1/04 ,  H04B1/44 ,  H04B2001/0408

摘要： Power amplifier having a common input and a plurality of outputs. In some embodiments, a power amplifier can include a plurality of signal paths having a common input node. Each signal path can include a dedicated amplifier stage, and be configured to be capable of amplifying a radio-frequency (RF) signal received at the common input node. The power amplifier can further include a bias selector configured to provide a bias signal to the dedicated amplifier stage of a selected one of the plurality of signal paths to thereby allow amplification of the RF signal through the selected signal path. Such a power amplifier can be implemented in products such as a die, a module, and a wireless device.

摘要翻译： 功率放大器具有公共输入和多个输出。 在一些实施例中，功率放大器可以包括具有公共输入节点的多个信号路径。 每个信号路径可以包括专用放大器级，并且被配置为能够放大在公共输入节点处接收的射频（RF）信号。 功率放大器还可以包括偏置选择器，其被配置为向所述多个信号路径中的所选择的一个信号路径的专用放大器级提供偏置信号，从而允许通过所选择的信号路径放大RF信号。 这样的功率放大器可以在诸如芯片，模块和无线设备的产品中实现。

公开(公告)号：US20150340991A1

公开(公告)日：2015-11-26

申请号：US14286791

申请日：2014-05-23

申请人： QUALCOMM Incorporated

发明人： Saihua Lin ,  Anup Savla

IPC分类号： H03F1/02 ,  H03F3/45 ,  H03F3/21 ,  H03F3/68 ,  H04B1/04 ,  H03F3/191

CPC分类号： H03F1/0205 ,  H03F1/0277 ,  H03F1/223 ,  H03F3/191 ,  H03F3/195 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/45076 ,  H03F3/45179 ,  H03F3/68 ,  H03F2200/09 ,  H03F2200/111 ,  H03F2200/378 ,  H03F2200/391 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2203/45181 ,  H03F2203/45394 ,  H03F2203/45554 ,  H03F2203/45562 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03F2203/45704 ,  H03F2203/45724 ,  H03F2203/45726 ,  H03F2203/45728 ,  H03F2203/45731 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7236 ,  H04B1/04 ,  H04B2001/0408

摘要： An apparatus includes a first capacitor, an inductor coupled to the first capacitor, and a second capacitor coupled to the inductor. The second capacitor is coupled to a first output of a differential amplifier.

摘要翻译： 一种装置包括第一电容器，耦合到第一电容器的电感器和耦合到电感器的第二电容器。 第二电容器耦合到差分放大器的第一输出端。