中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

232 records (took 0.031 seconds)

    SWITCH TOPOLOGY FOR SWITCHING FILTERS MULTIPLEXERS
    191.
    发明申请
    SWITCH TOPOLOGY FOR SWITCHING FILTERS MULTIPLEXERS 有权
    用于切换过滤器的交换机的开关拓扑

    公开(公告)号：US20170005385A1

    公开(公告)日：2017-01-05

    申请号：US15010829

    申请日：2016-01-29

    Applicant: RF Micro Devices, Inc.

    Inventor： Nadim Khlat ,  Marcus Granger-Jones

    IPC: H01P1/15 ,  H01P1/213

    CPC classification number: H03H19/002 ,  H03H7/465 ,  H03H2250/00 ,  H04B1/006

    Abstract: This disclosure relates to radio frequency (RF) front end circuitry used to route RF signals. In one embodiment, the RF front end circuitry has a filter circuit and a switch device. The switch device includes a common port, an RF port, and switchable path connected in series between the common port and the RF port. The switch device is configured to present approximately the filter capacitance of the filter circuit at the common port when the switchable path is closed. However, when the switchable path is open, the switch device is configured to present a device capacitance at the common port that is approximately equal to the filter capacitance of the filter circuit. In this manner, if the common port is connected to an antenna, the capacitance seen by the antenna from the common port remains substantially unchanged regardless of which of the switchable path is opened or closed.

    Abstract translation: 本公开涉及用于路由RF信号的射频（RF）前端电路。 在一个实施例中，RF前端电路具有滤波器电路和开关装置。 开关装置包括在公共端口和RF端口之间串联连接的公共端口，RF端口和可切换路径。 开关装置被配置为当可切换路径闭合时，在公共端口处大致呈现滤波器电路的滤波电容。 然而，当可切换路径打开时，开关装置被配置为在公共端口处呈现近似等于滤波器电路的滤波器电容的器件电容。 以这种方式，如果公共端口连接到天线，则天线从公共端口看到的电容保持基本上不变，而不管可切换路径中哪一个被打开或关闭。

    Fast transition envelope tracking
    192.
    发明授权
    Fast transition envelope tracking 有权
    快速过渡包络跟踪

    公开(公告)号：US09516693B2

    公开(公告)日：2016-12-06

    申请号：US14838515

    申请日：2015-08-28

    Applicant: RF Micro Devices, Inc.

    Inventor： Nadim Khlat ,  Michael R. Kay

    IPC: H04B1/04 ,  H04W76/04

    CPC classification number: H04W76/27 ,  H03F1/0227 ,  H03F3/24 ,  H03F2200/102 ,  H04W52/0229 ,  H04W52/028 ,  Y02D70/142

    Abstract: Envelope power supply circuitry is operated in one of an off-state, a standby-state, and a transmit-state. In the standby-state, select components in envelope power converter circuitry in the envelope power supply circuitry are turned on in order to charge one or more inductive and/or capacitive elements therein to a maximum value necessary for supporting transmission of signals about a maximum output power. Accordingly, the envelope power supply circuitry is able to prepare to support transmission about any output power without knowing the output power ahead of time.

    Abstract translation: 信封电源电路以关闭状态，待机状态和发送状态之一工作。 在待机状态下，选择包络电源电路中的包络功率转换器电路中的组件被接通，以便将其中的一个或多个感应和/或电容元件充电到支持关于最大输出的信号传输所需的最大值 功率。 因此，信封电源电路能够准备支持关于任何输出功率的传输，而无需提前知道输出功率。

    RADIO FREQUENCY FRONT END CIRCUITRY WITH IMPROVED PRIMARY TRANSMIT SIGNAL ISOLATION
    194.
    发明申请
    RADIO FREQUENCY FRONT END CIRCUITRY WITH IMPROVED PRIMARY TRANSMIT SIGNAL ISOLATION 有权
    无线电频率前端电路与改进的主发射信号隔离

    公开(公告)号：US20160336972A1

    公开(公告)日：2016-11-17

    申请号：US15083791

    申请日：2016-03-29

    Applicant: RF Micro Devices, Inc.

    Inventor： Nadim Khlat ,  Marcus Granger-Jones

    IPC: H04B1/00 ,  H04B7/04

    CPC classification number: H04B1/006 ,  H04B1/3805 ,  H04B1/48 ,  H04B7/0602 ,  H04B7/0805

    Abstract: RF front end circuitry includes primary transceiver circuitry associated with a primary antenna and secondary receiver circuitry associated with a secondary antenna. Generally, the primary transceiver circuitry and the primary antenna are located on one end of a mobile communications device, while the secondary receiver circuitry and the secondary antenna are located at an opposite end of the device. Cross-coupling connection lines run between the antenna switching circuitry for the primary antenna and the secondary antenna, and are reused to send a portion of primary RF transmit signals from the primary transceiver circuitry to the secondary receiver circuitry so that primary RF transmit signals coupled into the secondary receiver path via antenna-to-antenna coupling can be reduced.

    Abstract translation: RF前端电路包括与主天线相关联的主收发器电路和与辅助天线相关联的辅助接收器电路。 通常，主收发器电路和主天线位于移动通信设备的一端，而辅助接收器电路和辅助天线位于设备的相对端。 交叉耦合连接线在用于主天线的天线切换电路和次天线之间运行，并且被重用以将主要RF发射信号的一部分从主收发器电路发送到次级接收机电路，使得主RF发射信号耦合到 可以减少通过天线到天线耦合的次级接收机路径。

    CA FDD-FDD AND FDD-TDD ARCHITECTURE
    195.
    发明申请
    CA FDD-FDD AND FDD-TDD ARCHITECTURE 有权
    CA FDD-FDD和FDD-TDD架构

    公开(公告)号：US20160323080A1

    公开(公告)日：2016-11-03

    申请号：US14991090

    申请日：2016-01-08

    Applicant: RF Micro Devices, Inc.

    Inventor： Nadim Khlat

    IPC: H04L5/00 ,  H04L5/14 ,  H04B7/04

    CPC classification number: H04B7/0413 ,  H04B1/0057 ,  H04B1/38 ,  H04B7/0602 ,  H04B7/0802 ,  H04L5/001 ,  H04L5/0041

    Abstract: Radio frequency (RF) front end circuitry includes RF filtering circuitry with first multiplexer circuitry and second multiplexer circuitry. The first multiplexer circuitry is used to pass primary RF transmit and receive signals within one or more frequency division duplexing (FDD) operating bands and diversity multiple-input-multiple-output (MIMO) receive signals within one or more time division duplexing (TDD) operating bands between transceiver circuitry and one or more antennas. The second multiplexer circuitry is used to pass primary RF transmit and receive signals within the one or more TDD operating bands and diversity MIMO receive signals within the one or more FDD operating bands between the transceiver circuitry and the one or more antennas.

    Abstract translation: 射频（RF）前端电路包括具有第一多路复用器电路和第二多路复用器电路的RF滤波电路。 第一多路复用器电路用于在一个或多个时分双工（TDD）中的一个或多个频分双工（FDD）操作频带和分集多输入多输出（MIMO）接收信号内传送主RF发射和接收信号， 收发器电路和一个或多个天线之间的工作频带。 第二多路复用器电路用于在一个或多个TDD操作频带内传送主RF发射和接收信号，并在收发器电路和一个或多个天线之间的一个或多个FDD操作频带内分集MIMO接收信号。

    Dual instantaneous envelope tracking
    196.
    发明授权
    Dual instantaneous envelope tracking 有权
    双重瞬时包络跟踪

    公开(公告)号：US09479118B2

    公开(公告)日：2016-10-25

    申请号：US14254215

    申请日：2014-04-16

    Applicant: RF Micro Devices, Inc.

    Inventor： Nadim Khlat ,  Baker Scott ,  Michael R. Kay

    IPC: H03G3/20 ,  H03F1/02 ,  H03F3/195 ,  H03F3/24

    CPC classification number: H03F1/0227 ,  H03F1/0266 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/555

    Abstract: Power supply circuitry, which includes a parallel amplifier and a parallel amplifier power supply, is disclosed. The power supply circuitry operates in either an average power tracking mode or an envelope tracking mode. The parallel amplifier power supply provides a parallel amplifier power supply signal. The parallel amplifier regulates an envelope power supply voltage based on an envelope power supply control signal using the parallel amplifier power supply signal, which provides power for amplification. During the envelope tracking mode, the envelope power supply voltage at least partially tracks an envelope of an RF transmit signal and the parallel amplifier power supply signal at least partially tracks the envelope power supply control signal. During the average power tracking mode, the envelope power supply voltage does not track the envelope of the RF transmit signal.

    Abstract translation: 公开了包括并联放大器和并行放大器电源的电源电路。 电源电路在平均功率跟踪模式或包络跟踪模式下工作。 并联放大器电源提供并联放大器电源信号。 并联放大器基于包络电源控制信号，使用并联放大器电源信号来调节包络电源电压，该信号提供放大功率。 在包络跟踪模式期间，信封电源电压至少部分地跟踪RF发射信号的包络，并且并行放大器电源信号至少部分地跟踪包络电源控制信号。 在平均功率跟踪模式期间，包络电源电压不跟踪RF发射信号的包络。

    Multiple mode RF power converter
    197.
    发明授权
    Multiple mode RF power converter 有权

    公开(公告)号：US09377797B2

    公开(公告)日：2016-06-28

    申请号：US14702192

    申请日：2015-05-01

    Applicant: RF Micro Devices, Inc.

    Inventor： Michael R. Kay ,  Nadim Khlat

    IPC: G05F1/00 ,  G05F1/46

    CPC classification number: G05F1/468 ,  H02M1/10 ,  H02M2001/0067 ,  H03F1/0211 ,  H03F1/0227 ,  H03F1/26 ,  H03F3/24 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/504 ,  H04B15/005

    Abstract: This disclosure relates to radio frequency (RF) power converters and methods of operating the same. In one embodiment, an RF power converter includes an RF switching converter, a low-drop out (LDO) regulation circuit, and an RF filter. The RF filter is coupled to receive a pulsed output voltage from the RF switching converter and a supply voltage from the LDO regulation circuit. The RF filter is operable to alternate between a first RF filter topology and a second RF filter topology. In the first RF filter topology, the RF filter is configured to convert the pulsed output voltage from a switching circuit into the supply voltage. The RF filter in the second RF filter topology is configured to filter the supply voltage from the LDO regulation circuit to reduce a ripple variation in a supply voltage level of the supply voltage. As such, the RF filter provides greater versatility.

    Multi-mode power amplifier architecture
    198.
    发明授权
    Multi-mode power amplifier architecture 有权
    多模功率放大器架构

    公开(公告)号：US09319214B2

    公开(公告)日：2016-04-19

    申请号：US13887965

    申请日：2013-05-06

    Applicant: RF Micro Devices, Inc.

    Inventor： Nadim Khlat

    IPC: H04L5/18 ,  H04B1/00 ,  H04L5/14

    CPC classification number: H04L5/18 ,  H04B1/0057 ,  H04L5/14

    Abstract: Radio frequency (RF) circuitry, which includes a time division duplex (TDD)/frequency division duplex (FDD) driver stage, a TDD final stage, an FDD final stage, and power directing circuitry, is disclosed. The power directing circuitry is coupled between the TDD/FDD driver stage and the TDD final stage, and is further coupled between the TDD/FDD driver stage and the FDD final stage.

    Abstract translation: 公开了包括时分双工（TDD）/频分双工（FDD）驱动器级，TDD最终级，FDD最后级和功率定向电路的射频（RF）电路。 功率引导电路耦合在TDD / FDD驱动级和TDD最终级之间，并且进一步耦合在TDD / FDD驱动级和FDD最后级之间。

Patent Agency Ranking