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    MINIATURE RADIO FREQUENCY DIRECTIONAL COUPLER FOR CELLULAR APPLICATIONS
    1.
    发明申请
    MINIATURE RADIO FREQUENCY DIRECTIONAL COUPLER FOR CELLULAR APPLICATIONS 有权
    用于细胞应用的微型无线电频率方向耦合器

    公开(公告)号：US20140306778A1

    公开(公告)日：2014-10-16

    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。

    ZERO INSERTION LOSS DIRECTIONAL COUPLER FOR WIRELESS TRANSCEIVERS WITH INTEGRATED POWER AMPLIFIERS
    2.
    发明申请
    ZERO INSERTION LOSS DIRECTIONAL COUPLER FOR WIRELESS TRANSCEIVERS WITH INTEGRATED POWER AMPLIFIERS 有权
    具有集成功率放大器的无线收发器零插入损耗方向耦合器

    公开(公告)号：US20160028146A1

    公开(公告)日：2016-01-28

    申请号：US14805383

    申请日：2015-07-21

    申请人： RFAXIS, INC.

    发明人： LISETTE L. ZHANG ,  OLEKSANDR GORBACHOV

    IPC分类号： H01P5/18

    CPC分类号： H01P5/184

    摘要： A zero insertion loss directional coupler includes an input port, an antenna port, an isolation port, and a detect port. The coupler has a first signal trace, a second signal trace, and an inductive winding. The first signal trace is on one of two layers and is connected to the input port and the antenna port, while the inductive winding is on another one of the two layers. A first terminal of the inductive winding is connected to the isolation port. A first terminal of the second signal trace is connected to the detect port and a second terminal of the second signal trace is connected to a second terminal of the inductive winding.

    摘要翻译： 零插入损耗定向耦合器包括输入端口，天线端口，隔离端口和检测端口。 耦合器具有第​​一信号迹线，第二信号迹线和感应绕组。 第一个信号迹线位于两层之一，并连接到输入端口和天线端口，而感应绕组则位于两层中的另一层上。 感应绕组的第一端子连接到隔离端口。 第二信号迹线的第一端连接到检测端口，第二信号迹线的第二端连接到感应绕组的第二端。

    POWER AMPLIFIER ARCHITECTURES WITH INPUT POWER PROTECTION CIRCUITS
    3.
    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。

    COMPLEMENTARY METAL OXIDE SEMICONDUCTOR RADIO FREQUENCY POWER AMPLIFIERS WITH HIGH LINEARITY ACROSS A WIDE RANGE OF BURST SIGNALS IN WIFI APPLICATIONS
    5.
    发明申请
    COMPLEMENTARY METAL OXIDE SEMICONDUCTOR RADIO FREQUENCY POWER AMPLIFIERS WITH HIGH LINEARITY ACROSS A WIDE RANGE OF BURST SIGNALS IN WIFI APPLICATIONS 有权
    互补金属氧化物半导体无线电频率功率放大器，具有高线性度，广泛应用于WIFI应用中的BURST信号

    公开(公告)号：US20160072444A1

    公开(公告)日：2016-03-10

    申请号：US14849936

    申请日：2015-09-10

    申请人： RFAXIS, INC.

    发明人： OLEKSANDR GORBACHOV ,  QIANG LI ,  FLOYD ASHBAUGH ,  AYDIN SEYEDI ,  LOTHAR MUSIOL ,  LISETTE L. ZHANG

    IPC分类号： H03F1/02 ,  H03F3/45 ,  H03F3/21 ,  H03F1/30 ,  H03F3/193

    CPC分类号： H03F3/193 ,  H03F1/0261 ,  H03F1/301 ,  H03F1/3205 ,  H03F2200/18 ,  H03F2200/451

    摘要： An RF power amplifier biasing circuit has a start ramp signal input, a main current source input, an auxiliary current source input, and a circuit output. A ramp-up capacitor is connected to the auxiliary current source input. A ramp-up switch transistor is connected to the start ramp signal input and is selectively thereby to connect the auxiliary current source input to the ramp-up capacitor. A buffer stage has an input connected to the ramp-up capacitor and an output connected to the main current source input at a sum node. A minor transistor has a gate terminal corresponding to the circuit output and a source terminal connected to the sum node and to the gate terminal.

    摘要翻译： RF功率放大器偏置电路具有启动斜坡信号输入，主电流源输入，辅助电流源输入和电路输出。 辅助电流源输入端连接有上拉电容。 斜坡开关晶体管连接到起始斜坡信号输入，并且选择性地将辅助电流源输入端连接到斜坡上升电容器。 缓冲级具有连接到斜坡上升电容器的输入端和连接到和节点处的主电流源输入端的输出端。 次级晶体管具有对应于电路输出的栅极端子和连接到和节点和栅极端子的源极端子。

    ON-DIE HARMONICS FILTERING FOR RADIO FREQUENCY POWER AMPLIFIERS
    7.
    发明申请
    ON-DIE HARMONICS FILTERING FOR RADIO FREQUENCY POWER AMPLIFIERS 有权
    用于无线电频率功率放大器的模拟谐波滤波

    公开(公告)号：US20140197892A1

    公开(公告)日：2014-07-17

    申请号：US14152321

    申请日：2014-01-10

    申请人： RFAXIS, INC.

    发明人： OLEKSANDR GORBACHOV

    IPC分类号： H03F1/34 ,  H03F3/21 ,  H03F3/19

    CPC分类号： H03F1/34 ,  H03F3/19 ,  H03F3/21 ,  H03F2200/108 ,  H03F2200/121 ,  H03F2200/492

    摘要： A power amplifier architecture for connecting a radio frequency (RF) transceiver to an antenna. An input matching circuit is connected to its input port, and an output matching circuit is connected to its output port. An amplifier circuit includes at least one amplifier active device with a first terminal connected to the input matching segment and a second terminal connected to the output matching segment. A first harmonic feedback circuit is connected across the amplifier active device. Voltage components of emissions of one or more harmonic frequencies of a carrier fundamental frequency generated by the amplifier active device is fed back with opposite phase to the first terminal of the amplifier active device. A negative feedback is defined at a level correlated with a gain level of the amplifier active device at the harmonic frequencies of the carrier fundamental frequency. Negative feedback is minimized at the carrier fundamental frequency.

    摘要翻译： 用于将射频（RF）收发器连接到天线的功率放大器架构。 输入匹配电路连接到其输入端口，输出匹配电路连接到其输出端口。 放大器电路包括至少一个放大器有源器件，其中第一端子连接到输入匹配段，第二端子连接到输出匹配段。 第一谐波反馈电路连接在放大器有源器件的两端。 由放大器有源器件产生的载波基频的一个或多个谐波频率的发射的电压分量被反馈到放大器有源器件的第一端。 负载反馈被定义在与载波基频的谐波频率处的放大器有源器件的增益电平相关的电平。 负载反馈在载波基频处被最小化。

    COMPLEMENTARY METAL OXIDE SEMICONDUCTOR DIFFERENTIAL ANTENNA TRANSMIT-RECEIVE SWITCHES WITH POWER COMBINING CIRCUITRY FOR ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING SYSTEMS
    9.
    发明申请
    COMPLEMENTARY METAL OXIDE SEMICONDUCTOR DIFFERENTIAL ANTENNA TRANSMIT-RECEIVE SWITCHES WITH POWER COMBINING CIRCUITRY FOR ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING SYSTEMS 有权
    具有功率组合电路的正交频分复用系统的补充金属氧化物半导体差分天线发射接收开关

    公开(公告)号：US20160028432A1

    公开(公告)日：2016-01-28

    申请号：US14810943

    申请日：2015-07-28

    申请人： RFAXIS, INC.

    发明人： LISETTE L. ZHANG ,  OLEKSANDR GORBACHOV

    IPC分类号： H04B1/48 ,  H04B1/00

    CPC分类号： H04B1/48 ,  H04B1/006

    摘要： A radio frequency (RF) transmit-receive switch has an antenna port, first and second transmit differential ports and first and second receive differential ports. Transmit transistor switches are connected to the transmit differential ports. Primary and secondary windings of a transmit coupled inductor transformer are connected to the transmit transistor switches. Receive transistor switches are connected to the receive differential ports. Primary and secondary windings of a receive coupled inductor transformer are connected to the receive transistor switches. A first balun inductive winding is connected to the antenna port, and a second balun inductive winding is connected to the transistor switches.

    摘要翻译： 射频（RF）发射 - 接收开关具有天线端口，第一和第二发射差分端口以及第一和第二接收差分端口。 发射晶体管开关连接到发射差分端口。 发射耦合电感变压器的初级和次级绕组连接到发射晶体管开关。 接收晶体管开关连接到接收差分端口。 接收耦合电感变压器的初级和次级绕组连接到接收晶体管开关。 第一平衡 - 不平衡转换电感线圈连接到天线端口，第二平衡 - 不平衡变压器感应绕组连接到晶体管开关。

    ULTRA-HIGH COUPLING FACTOR MONOLITHIC TRANSFORMERS FOR INTEGRATED DIFFERENTIAL RADIO FREQUENCY AMPLIFIERS IN SYSTEM-ON-CHIP DEVICES
    10.
    发明申请
    ULTRA-HIGH COUPLING FACTOR MONOLITHIC TRANSFORMERS FOR INTEGRATED DIFFERENTIAL RADIO FREQUENCY AMPLIFIERS IN SYSTEM-ON-CHIP DEVICES 审中-公开
    用于集成的差分无线电频率放大器的超高耦合因子单片变换器

    公开(公告)号：US20160027571A1

    公开(公告)日：2016-01-28

    申请号：US14805368

    申请日：2015-07-21

    申请人： RFAXIS, INC.

    发明人： LISETTE L. ZHANG ,  OLEKSANDR GORBACHOV

    IPC分类号： H01F27/28 ,  H01F19/04

    CPC分类号： H01F27/2804 ,  H01F19/04 ,  H01F2027/2809

    摘要： An ultra-high coupling factor transformer has a plurality of conductive layers, a primary winding inductor, and a secondary winding inductor. The primary winding inductor is defined by a plurality of turns and disposed on a first one of the plurality of conductive layers and extends to a second one of the plurality of conductive layers. The secondary winding inductor is defined by a plurality of turns and disposed on the first one of the plurality of conductive layers and extends to the second one of the plurality of conductive layers. The primary winding is vertically and horizontally cross coupled with the secondary winding inductor, and defines a mutual coupling inductance from surrounding directions.

    摘要翻译： 超高耦合因子变压器具有多个导电层，初级绕组电感器和次级绕组电感器。 初级绕组电感器由多个匝限定并且设置在多个导电层中的第一导电层上并延伸到多个导电层中的第二导电层。 次级绕组电感器由多个匝限定，并且设置在多个导电层中的第一个导电层上并延伸到多个导电层中的第二导电层。 初级绕组与次级绕组电感器垂直和水平交叉耦合，并且限定来自周围方向的互耦电感。