利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

32 条记录 (耗时 0.023 秒)

    POWER AMPLIFIER ARCHITECTURES WITH INPUT POWER PROTECTION CIRCUITS
    1.
    发明申请
    POWER AMPLIFIER ARCHITECTURES WITH INPUT POWER PROTECTION CIRCUITS 有权
    具有输入电源保护电路的功率放大器结构

    公开(公告)号：US20150015339A1

    公开(公告)日：2015-01-15

    申请号：US14327365

    申请日：2014-07-09

    申请人： RFAXIS, INC.

    发明人： OLEKSANDR GORBACHOV ,  HUAN ZHAO ,  LISETTE L. ZHANG ,  LOTHAR MUSIOL ,  YONGXI QIAN

    IPC分类号： H03F3/19 ,  H03F1/02 ,  H03F3/21 ,  H03F1/52

    CPC分类号： H03F1/523 ,  H03F1/0266 ,  H03F1/56 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/105 ,  H03F2200/192 ,  H03F2200/204 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/405 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78 ,  H03G3/3042 ,  H03G2201/106

    摘要： An RF power amplifier circuit and input power limiter circuits are disclosed. A power detector generates a voltage output proportional to a power level of an input signal. There is a directional coupler with a first port connected to a transmit signal input, a second port connected to the input matching network, and a third port connected to the power detector. A first power amplifier stage with an input is connected to the input matching network and an output is connected to the transmit signal output. A control circuit connected to the power detector generates a gain reduction signal based upon a comparison of the voltage output from the power detector to predefined voltage levels corresponding to specific power levels of the input signal. Overall gain of the RF power amplifier circuit is reduced based upon the gain reduction signal that adjusts the configurations of the circuit components.

    摘要翻译： 公开了RF功率放大器电路和输入功率限制器电路。 功率检测器产生与输入信号的功率电平成比例的电压输出。 存在定向耦合器，其中第一端口连接到发射信号输入，连接到输入匹配网络的第二端口和连接到功率检测器的第三端口。 具有输入的第一功率放大器级连接到输入匹配网络，并且输出端连接到发射信号输出端。 连接到功率检测器的控制电路基于从功率检测器输出的电压与对应于输入信号的特定功率电平的预定电压电平的比较产生增益减小信号。 基于调整电路部件的配置的增益减小信号，RF功率放大器电路的总体增益被减小。

    Increased receive sensitivity radio frequency front end integrated circuits
    3.
    发明授权
    Increased receive sensitivity radio frequency front end integrated circuits 有权
    增加接收灵敏度射频前端集成电路

    公开(公告)号：US08649739B2

    公开(公告)日：2014-02-11

    申请号：US12980794

    申请日：2010-12-29

    申请人： Oleksandr Gorbachov

    发明人： Oleksandr Gorbachov

    IPC分类号： H04B1/44

    CPC分类号： H04B1/18 ,  H04B1/48

    摘要： A front end circuit for coupling an antenna to a radio frequency (RF) transceiver is disclosed. An antenna port connectible to the antenna is provided, as well as a power amplifier coupled to a signal output of the RF transceiver and a low noise amplifier coupled to the signal input of the RF transceiver. The front end circuit includes a switching network that is connected to the antenna port, the power amplifier, and the low noise amplifier. Additionally, there is at least one resonant circuit and a control circuit coupled to a receive enable line of the transceiver. This resonant circuit defines a parallel resonance with a first resonant resistance in the operating frequency band upon activation in the receive mode. The resonant circuit also defines a substantially high transistor impedance upon deactivation in the transmit mode.

    摘要翻译： 公开了一种用于将天线耦合到射频（RF）收发器的前端电路。 提供了可连接到天线的天线端口，以及耦合到RF收发器的信号输出的功率放大器和耦合到RF收发器的信号输入的低噪声放大器。 前端电路包括连接到天线端口，功率放大器和低噪声放大器的交换网络。 此外，存在耦合到收发器的接收使能线的至少一个谐振电路和控制电路。 该谐振电路在接收模式下激活时定义了工作频带中的第一谐振电阻的并联谐振。 谐振电路还在发射模式中去激活时定义了基本上高的晶体管阻抗。

    Transmit-receive radio frequency front end integrated circuits for laptop computer applications
    4.
    发明授权
    Transmit-receive radio frequency front end integrated circuits for laptop computer applications 有权
    用于笔记本电脑应用的发射接收射频前端集成电路

    公开(公告)号：US08417286B2

    公开(公告)日：2013-04-09

    申请号：US12986091

    申请日：2011-01-06

    申请人： Oleksandr Gorbachov ,  Ping Peng

    发明人： Oleksandr Gorbachov ,  Ping Peng

    IPC分类号： H04M1/00

    CPC分类号： H04B1/0064

    摘要： A radio frequency communications system with a first operating frequency band and a second operating frequency band is disclosed. There is a first antenna. A transceiver has a first transmission port, a second transmission port, a first reception port, and a second reception port. In a first front end circuit, a first port is coupled to the antenna, and a second port is coupled to the transceiver. The first front end circuit has a first low noise amplifier, a second low noise amplifier, a first power amplifier, and a second power amplifier. A switching circuit connects the first transmission port, the first reception port, the second transmission port, and the second reception port to the second port of the first front end circuit. The antenna is distant from the transceiver, while the first front end circuit is proximal to the antenna. The first switching circuit is proximal to the transceiver.

    摘要翻译： 公开了具有第一工作频带和第二工作频带的射频通信系统。 有一个第一个天线。 收发器具有第一传输端口，第二传输端口，第一接收端口和第二接收端口。 在第一前端电路中，第一端口耦合到天线，并且第二端口耦合到收发器。 第一前端电路具有第一低噪声放大器，第二低噪声放大器，第一功率放大器和第二功率放大器。 开关电路将第一传输端口，第一接收端口，第二传输端口和第二接收端口连接到第一前端电路的第二端口。 天线远离收发器，而第一个前端电路靠近天线。 第一个开关电路靠近收发器。

    Multi mode radio frequency transceiver front end circuit with inter-stage power divider
    5.
    发明授权
    Multi mode radio frequency transceiver front end circuit with inter-stage power divider 有权
    多模射频收发器前端电路，具有级间功率分配器

    公开(公告)号：US08078119B2

    公开(公告)日：2011-12-13

    申请号：US12428417

    申请日：2009-04-22

    申请人： Oleksandr Gorbachov

    发明人： Oleksandr Gorbachov

    IPC分类号： H04B1/44

    CPC分类号： H04B1/406 ,  H04B1/0057

    摘要： A front end circuit for coupling an antenna to a first radio frequency (RF) transceiver and a second RF transceiver is contemplated. The RF transceivers have a signal input, a signal output, a receive enable line and a transmit enable line. In addition to an antenna port, the front end circuit has a first power amplifier and a first low noise amplifier both coupled to first RF transceiver, and a second power amplifier and a second low noise amplifier both coupled to the second RF transceiver. The front end circuit includes a matching network that couples the power amplifiers and the low noise amplifiers, the various outputs and inputs thereof being common.

    摘要翻译： 预期将天线耦合到第一射频（RF）收发器和第二RF收发器的前端电路。 RF收发器具有信号输入，信号输出，接收使能线和发送使能线。 除了天线端口之外，前端电路具有耦合到第一RF收发器的第一功率放大器和第一低噪声放大器，以及耦合到第二RF收发器的第二功率放大器和第二低噪声放大器。 前端电路包括耦合功率放大器和低噪声放大器的匹配网络，其各种输出和输入是常见的。

    Power amplifier with co-existence filter
    6.
    发明授权
    Power amplifier with co-existence filter 有权
    功率放大器与共存滤波器

    公开(公告)号：US09093967B2

    公开(公告)日：2015-07-28

    申请号：US13462737

    申请日：2012-05-02

    申请人： Oleksandr Gorbachov

    发明人： Oleksandr Gorbachov

    IPC分类号： H04B1/38 ,  H03F3/68 ,  H03F1/56 ,  H03F3/195 ,  H03F3/24 ,  H03F3/72 ,  H03H7/01

    CPC分类号： H03F3/68 ,  H03F1/565 ,  H03F3/195 ,  H03F3/24 ,  H03F3/72 ,  H03F2200/222 ,  H03F2200/294 ,  H03F2200/387 ,  H03H7/1741

    摘要： A power amplifier architecture and front end circuits utilizing the same that connect a transceiver to an antenna are disclosed. The transceiver is configured for a specific operating frequency. An input matching segment is connected to an input port, and an output matching segment is connected to an output port. An amplifier segment includes at least one transistor with a first terminal connected to the input matching segment, a second terminal connected to the output matching segment, and a third terminal connected to a filter with a range of rejection frequencies. The filter is connected in close proximity to a first inductive interconnection tying a junction connected to the third terminal to a ground. A compensator is also connected to the input matching segment and the output matching segment to minimize instability of the filter.

    摘要翻译： 公开了一种功率放大器架构和利用其将收发器连接到天线的前端电路。 收发器配置为特定的工作频率。 输入匹配段连接到输入端口，输出匹配段连接到输出端口。 放大器段包括至少一个具有连接到输入匹配段的第一端子的晶体管，连接到输出匹配段的第二端子和连接到具有一定范围的抑制频率的滤波器的第三端子。 滤波器紧邻第一电感性互连，将连接到第三端子的接点与接地连接。 补偿器也连接到输入匹配段和输出匹配段以最小化过滤器的不稳定性。

    Miniature radio frequency directional coupler for cellular applications
    7.
    发明授权
    Miniature radio frequency directional coupler for cellular applications 有权
    用于蜂窝应用的微型射频定向耦合器

    公开(公告)号：US09093734B2

    公开(公告)日：2015-07-28

    申请号：US14251197

    申请日：2014-04-11

    申请人： RFAXIS, INC

    发明人： Oleksandr Gorbachov

    IPC分类号： H01P5/18

    CPC分类号： H01P5/18 ,  H01P5/184

    摘要： A directional coupler with increased directivity and reduced overall footprint area is disclosed. There is an input port, an output port, a coupled port, and a ballasting port. A primary chain of serially connected inductors is connected to the input port and the output port, while a secondary chain of serially connected inductors is connected to the coupled port and the ballasting port. A first compensation capacitor is connected to the input port and the coupled port, and a second compensation capacitor is connected to the input port and the ballasting port.

    摘要翻译： 公开了具有增加的方向性和减小的总占地面积的定向耦合器。 有输入端口，输出端口，耦合端口和压载端口。 串联电感器的主链连接到输入端口和输出端口，而串联的电感器的次级链路连接到耦合端口和压载端口。 第一补偿电容器连接到输入端口和耦合端口，第二补偿电容器连接到输入端口和压载端口。

    Multi-channel radio frequency front end circuit with full receive diversity for multi-path mitigation
    8.
    发明授权
    Multi-channel radio frequency front end circuit with full receive diversity for multi-path mitigation 有权
    多通道射频前端电路，具有完全接收分集的多路径缓解功能

    公开(公告)号：US08325632B2

    公开(公告)日：2012-12-04

    申请号：US12498905

    申请日：2009-07-07

    申请人： Oleksandr Gorbachov

    发明人： Oleksandr Gorbachov

    IPC分类号： H04J3/00 ,  H04B1/38 ,  H04B1/44 ,  H01Q21/00

    CPC分类号： H04B7/0602 ,  H04B1/48 ,  H04B7/0817

    摘要： A front end circuit for coupling a plurality of antennas to a multi-channel time domain duplex RF transceiver is disclosed. The front end circuit has a first transmit port, a first receive chain primary port, a first receive chain secondary ports, and a first antenna port connectible to a first one of the plurality of antennas. The front end circuit also has a second transmit port, a second receive chain primary port, and a second receive chain secondary port connectible to a second one of the plurality of antennas. A first switch has terminals connected to the first transmit port, the first receive chain primary port, and the second receive chain secondary port, as well as a common terminal that is connected to the first antenna port. Additionally, the front end circuit has a second switch that has terminals connected to the second transmit port, the second receive chain primary port and the first receive chain secondary port, and a common terminal connected to the second antenna port.

    摘要翻译： 公开了一种用于将多个天线耦合到多信道时域双工RF收发器的前端电路。 前端电路具有第一发送端口，第一接收链主端口，第一接收链次端口以及可连接到多个天线中的第一天线的第一天线端口。 前端电路还具有可连接到多个天线中的第二个天线的第二发射端口，第二接收链主端口和第二接收链次级端口。 第一开关具有连接到第一发送端口，第一接收链主端口和第二接收链次端口的终端以及连接到第一天线端口的公共终端。 此外，前端电路具有第二开关，其具有连接到第二发送端口，第二接收链主端口和第一接收链次端口的端子，以及连接到第二天线端口的公共端子。

    Single input/output port radio frequency transceiver front end circuit
    9.
    发明授权
    Single input/output port radio frequency transceiver front end circuit 有权
    单输入/输出端口射频收发器前端电路

    公开(公告)号：US08265567B2

    公开(公告)日：2012-09-11

    申请号：US12412703

    申请日：2009-03-27

    申请人： Oleksandr Gorbachov

    发明人： Oleksandr Gorbachov

    IPC分类号： H04B1/38

    CPC分类号： H04B1/18 ,  H03H7/38

    摘要： A front end circuit for coupling an antenna to a radio frequency (RF) transceiver for time domain duplex systems is disclosed. The front end circuit includes an antenna port, a power amplifier, a low noise amplifier, and a matching network. The output of the power amplifier and the input of the low noise amplifier are coupled to the matching network and connected in common to the antenna. The power amplifier and the low noise amplifier are activated and deactivated in sequence corresponding to the transmit and receive modes of the transceiver, and the matching network minimizes the effect that one has on the other at the designated operating frequency.

    摘要翻译： 公开了一种用于将天线耦合到用于时域双工系统的射频（RF）收发器的前端电路。 前端电路包括天线端口，功率放大器，低噪声放大器和匹配网络。 功率放大器的输出和低噪声放大器的输入耦合到匹配网络并共同连接到天线。 功率放大器和低噪声放大器按照与收发器的发送和接收模式对应的顺序被激活和去激活，并且匹配网络使得在指定的工作频率下的另一个效果最小化。

    Radio frequency transceiver front end circuit with parallel resonant circuit
    10.
    发明授权
    Radio frequency transceiver front end circuit with parallel resonant circuit 有权
    射频收发器前端电路采用并联谐振电路

    公开(公告)号：US08135355B2

    公开(公告)日：2012-03-13

    申请号：US12412741

    申请日：2009-03-27

    申请人： Oleksandr Gorbachov

    发明人： Oleksandr Gorbachov

    IPC分类号： H04B1/38

    CPC分类号： H04B1/18 ,  H03H7/38

    摘要： A front end circuit for coupling an antenna to a radio frequency (RF) transceiver for time domain duplex systems is disclosed. The front end circuit includes an antenna port, a power amplifier, a low noise amplifier, and a matching network. The output of the power amplifier and the input of the low noise amplifier are coupled to the matching network and connected in common to the antenna. The power amplifier and the low noise amplifier are activated and deactivated in sequence corresponding to the transmit and receive modes of the transceiver, and the matching network minimizes the effect that one has on the other at the designated operating frequency.

    摘要翻译： 公开了一种用于将天线耦合到用于时域双工系统的射频（RF）收发器的前端电路。 前端电路包括天线端口，功率放大器，低噪声放大器和匹配网络。 功率放大器的输出和低噪声放大器的输入耦合到匹配网络并共同连接到天线。 功率放大器和低噪声放大器按照与收发器的发送和接收模式对应的顺序被激活和去激活，并且匹配网络使得在指定的工作频率下的另一个效果最小化。