公开(公告)号：US20230231522A1

公开(公告)日：2023-07-20

申请号：US17580128

申请日：2022-01-20

Applicant: Apple Inc.

Inventor： Nitesh Singhal ,  Mark G. Forbes

IPC: H03F3/19 ,  H03G3/30 ,  H04B1/04

CPC classification number: H03F3/19 ,  H03G3/3036 ,  H04B1/04 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307 ,  H04B1/40

Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more radio-frequency amplifiers for amplifying a radio-frequency signal. The radio-frequency amplifier may include input transistors cross-coupled with capacitance neutralization transistors and/or coupled to cascode transistors. One or more n-type gain adjustment transistors may be coupled to source terminals of the capacitance neutralization transistors. One or more p-type gain adjustment transistors may be coupled to source terminals of the cascode transistors. One or more processors in the electronic device can selectively activate one or more of the gain adjustment transistors to reduce the gain of the radio-frequency amplifier without degrading noise performance and without altering the in-band frequency response of the radio-frequency amplifier.

公开(公告)号：US20230208455A1

公开(公告)日：2023-06-29

申请号：US18146611

申请日：2022-12-27

Applicant: Skyworks Solutions, Inc.

Inventor： Dominique Michel Yves Brunel ,  Gregory Edward Babcock

IPC: H04B1/04 ,  H03F3/24 ,  H01Q9/04 ,  H03G3/30

CPC classification number: H04B1/04 ,  H03F3/245 ,  H01Q9/0407 ,  H03G3/3042 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: Polyphase power amplifiers for load insensitivity are disclosed. In certain embodiments, a polyphase transmit system includes an intermediate frequency transceiver including a first complex mixer that outputs a plurality of intermediate frequency transmit signals of different phases, and an intermediate frequency to radio frequency module including a second complex mixer that generates a plurality of radio frequency transmit signals of different phases based on the plurality of intermediate frequency transmit signals, and a polyphase power amplifier that receives the plurality of radio frequency transmit signals and outputs an amplified radio frequency signal. The polyphase transmit system further includes an antenna that transmits the amplified radio frequency signal.

公开(公告)号：US20230198507A1

公开(公告)日：2023-06-22

申请号：US18087052

申请日：2022-12-22

Applicant: Reach Power, Inc.

Inventor： Asmita Dani ,  Christopher Joseph Davlantes

IPC: H03K3/012 ,  H03F3/19 ,  H02M7/217 ,  H03G3/30

CPC classification number: H03K3/012 ,  H02M7/217 ,  H03F3/19 ,  H03G3/3036 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: A bidirectional RF circuit, preferably including a plurality of terminals, a switch, a transistor, a coupler, and a feedback network. The circuit can optionally include a drain matching network, an input matching network, and/or one or more tuning inputs. In some variations, the circuit can optionally include one or more impedance networks, such as an impedance network used in place of the feedback network; in some such variations, the circuit may not include a coupler, switch, and/or input matching network. A method for circuit operation, preferably including operating in an amplifier mode, operating in a rectifier mode, and/or transitioning between operation modes.

公开(公告)号：US20230170861A1

公开(公告)日：2023-06-01

申请号：US18057597

申请日：2022-11-21

Applicant: Analog Devices, Inc.

Inventor： Christopher J. DAY

IPC: H03F3/24 ,  H03G3/30

CPC classification number: H03F3/245 ,  H03G3/3042 ,  H03F2200/129 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: Systems and methods that integrate a directional coupling function with directivity that does not have output loss are disclosed. For example, a power amplifier circuit arrangement includes an input terminal to receive an input signal; amplifier circuitry including a first amplifier stage, a second amplifier stage, and a virtual ground node, where an input of the first amplifier stage is coupled to the input terminal, an output of the first amplifier stage is coupled to an input of the second amplifier stage via the virtual ground node, and an output of the second amplifier stage is coupled to the input of the first amplifier stage via feedback circuitry; an output terminal coupled to the output of the second amplifier stage, the output terminal to output an amplified signal; and a directional coupler terminal coupled to the virtual ground node.

公开(公告)号：US20180083579A1

公开(公告)日：2018-03-22

申请号：US15272103

申请日：2016-09-21

Applicant: Peregrine Semiconductor Corporation

Inventor： Hossein Noori ,  Chih-Chieh Cheng

IPC: H03F1/32 ,  H03F1/56 ,  H03F3/195 ,  H03G3/00 ,  H03G3/10

CPC classification number: H03F1/3205 ,  H03F1/56 ,  H03F3/195 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/211 ,  H03F2200/213 ,  H03F2200/222 ,  H03F2200/225 ,  H03F2200/24 ,  H03F2200/243 ,  H03F2200/249 ,  H03F2200/27 ,  H03F2200/294 ,  H03F2200/297 ,  H03F2200/301 ,  H03F2200/306 ,  H03F2200/312 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2200/399 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/489 ,  H03F2200/492 ,  H03F2200/495 ,  H03F2200/546 ,  H03F2200/72 ,  H03F2200/75 ,  H03G1/0029 ,  H03G1/0088 ,  H03G1/0094 ,  H03G3/001 ,  H03G3/008 ,  H03G3/10 ,  H03G2201/106 ,  H03G2201/307 ,  H03G2201/504

Abstract: A receiver front end capable of receiving and processing intraband non-contiguous carrier aggregate (CA) signals using multiple low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” input stage and a “common gate” output stage can be turned on or off using the gate of the output stage. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input stage of each cascode. Further switches used for switching degeneration inductors, gate/sources caps and gate to ground caps for each legs can be used to further improve the matching performance of the invention.

公开(公告)号：US08301097B2

公开(公告)日：2012-10-30

申请号：US12115263

申请日：2008-05-05

Applicant: Hooman Darabi ,  Henrik T. Jensen ,  Brima Ibrahim

Inventor： Hooman Darabi ,  Henrik T. Jensen ,  Brima Ibrahim

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G1/007 ,  H03G3/3063 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307

Abstract: A method for processing a plurality of signals may include amplifying an input signal and generating a wideband signal from the amplified input signal. The method may further include bandpass filtering the generated wideband signal to generate a narrowband signal, and adjusting amplification of the input signal based on a narrowband received signal strength indication of the generated narrowband signal, and/or a wideband received signal strength indication of the generated wideband signal. The amplified input signal may be downconverted to generate the wideband signal. The amplified input signal may be downconverted to an intermediate frequency (IF) and/or to a baseband signal to generate the wideband signal. At least one blocker signal may be bandpass filtered from the amplified input signal.

Abstract translation: 用于处理多个信号的方法可以包括放大输入信号并从放大的输入信号产生宽带信号。 该方法还可以包括对生成的宽带信号进行带通滤波以产生窄带信号，以及基于所生成的窄带信号的窄带接收信号强度指示和/或所生成的宽带信号强度指示来调整输入信号的放大 宽带信号。 放大的输入信号可以被下变频以产生宽带信号。 放大的输入信号可以下变频到中频（IF）和/或基带信号以产生宽带信号。 至少一个阻塞信号可以从放大的输入信号进行带通滤波。

公开(公告)号：US07304539B2

公开(公告)日：2007-12-04

申请号：US10960097

申请日：2004-10-08

Applicant: Hirokazu Tsurumaki ,  Hiroyuki Nagai ,  Tomio Furuya ,  Makoto Ishikawa

Inventor： Hirokazu Tsurumaki ,  Hiroyuki Nagai ,  Tomio Furuya ,  Makoto Ishikawa

IPC: H03G3/10

CPC classification number: H03G1/0005 ,  H03F1/301 ,  H03F2200/294 ,  H03F2200/372 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: In a high frequency power amplifier circuit that supplies a bias to an amplifying FET by a current mirror method, scattering of a threshold voltage Vth due to the scattering of the channel impurity concentration of the FET, and a shift of a bias point caused by the scattering of the threshold voltage Vth and a channel length modulation coefficient λ due to a short channel effect are corrected automatically. The scattering of a high frequency power amplifying characteristic can be reduced as a result.

Abstract translation: 在通过电流镜法向放大FET提供偏置的高频功率放大器电路中，由于FET的沟道杂质浓度的散射引起的阈值电压Vth的散射和由 自动校正阈值电压Vth的散射和由于短通道效应引起的通道长度调制系数λ。 结果可以降低高频功率放大特性的散射。

公开(公告)号：US07257379B2

公开(公告)日：2007-08-14

申请号：US10713613

申请日：2003-11-14

Applicant: Fatih Ozluturk ,  Leonid Kazakevich ,  Kenneth P. Kearney ,  Geetha Lakshmi Narayan ,  Alpaslan Demir ,  Tanbir Haque

Inventor： Fatih Ozluturk ,  Leonid Kazakevich ,  Kenneth P. Kearney ,  Geetha Lakshmi Narayan ,  Alpaslan Demir ,  Tanbir Haque

IPC: H04B1/38

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.

Abstract translation: 为了补偿由模拟无线电的低成本模拟无线电组件公差引起的性能下降，未来的系统架构（FSA）无线通信收发器采用多种数字信号处理（DSP）技术来补偿这种模拟组件的缺陷， 现代规格可能放宽。 在数字域中提供自动增益控制（AGC）功能，以提供增强的相位和幅度补偿以及许多其他射频（RF）参数。

公开(公告)号：US07248846B2

公开(公告)日：2007-07-24

申请号：US10765871

申请日：2004-01-29

Applicant: Hiroyuki Kayano ,  Yuta Araki ,  Yuuji Ohtsuka

Inventor： Hiroyuki Kayano ,  Yuta Araki ,  Yuuji Ohtsuka

IPC: H04B1/04 ,  H04B17/00 ,  H04B1/16

CPC classification number: H03G3/3042 ,  H03F1/0211 ,  H03F1/0277 ,  H03F1/3229 ,  H03F3/72 ,  H03G1/0088 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307

Abstract: An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier circuit which amplifies the second signal to output an amplified second signal, a combine circuit which outputs an amplified signal by combining the amplified second signal with the amplified first signal, and a controller which controls a supply of a power to the first amplifier circuit and the second amplifier circuit and has a first mode to supply the power to the second amplifier circuit without supplying the power to the first amplifier circuit.

Abstract translation: 放大器包括放大第一信号以输出放大的第一信号的第一放大器电路，输出对应于第一信号和放大的第一信号之间的差的第二信号的电路，将第二信号放大到 输出放大的第二信号，组合电路，其通过将放大的第二信号与放大的第一信号组合来输出放大信号，以及控制器，其控制向第一放大器电路和第二放大器电路供电，并具有第一 模式，以向第二放大器电路供电，而不向第一放大器电路供电。

公开(公告)号：US07081791B2

公开(公告)日：2006-07-25

申请号：US10820675

申请日：2004-04-07

Applicant: Lorenzo M. Carpineto ,  Eric Duvivier ,  Stefano Cipriani

Inventor： Lorenzo M. Carpineto ,  Eric Duvivier ,  Stefano Cipriani

IPC: H03G3/20

CPC classification number: H03F1/0272 ,  H03F3/45188 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45048 ,  H03F2203/45396 ,  H03G3/3036 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307

Abstract: A low noise amplifier circuit (10) includes an attenuator (12) for receiving a calibration signal and generating an attenuated calibration signal. A low noise amplifier (14) amplifies the attenuated calibration signal in calibration mode or amplifies a functional signal in functional mode. In calibration mode, a envelope detector/comparator (16) compares the calibration signal with the output of the low noise amplifier and generates a compensation signal indicating a deviation between the two signals. The gain of the low noise amplifier is adjusted responsive to the compensation signal.

Abstract translation: 低噪声放大器电路（10）包括用于接收校准信号并产生衰减的校准信号的衰减器（12）。 低噪声放大器（14）在校准模式下放大衰减的校准信号，或者在功能模式下放大功能信号。 在校准模式中，包络检测器/比较器（16）将校准信号与低噪声放大器的输出进行比较，并产生指示两个信号之间的偏差的补偿信号。 响应补偿信号调整低噪声放大器的增益。