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    Method of power amplifier calibration for an envelope tracking system
    31.
    发明授权
    Method of power amplifier calibration for an envelope tracking system 有权
    包络跟踪系统的功率放大器校准方法

    公开(公告)号：US09019011B2

    公开(公告)日：2015-04-28

    申请号：US13486012

    申请日：2012-06-01

    Applicant: Alexander Wayne Hietala ,  Nadim Khlat

    Inventor： Alexander Wayne Hietala ,  Nadim Khlat

    IPC: H03G3/20 ,  H03F1/32 ,  H03F1/02

    CPC classification number: H03F1/32 ,  H03F1/0222

    Abstract: A method for power amplifier (PA) calibration for an envelope tracking system of a wireless device is disclosed. The method involves measuring an output power of a PA that is a part under test (PUT) at a predetermined input power. Another step includes calculating a gain equal to the output power of the PA divided by the predetermined input power. A next step involves calculating a gain correction by subtracting the calculated gain from a desired gain. Other steps include determining an expected supply voltage for the PA at the desired gain using the gain correction applied to a nominal curve of gain versus PA supply voltage, and then storing the expected supply voltage for the PA versus input power in memory.

    Abstract translation: 公开了一种用于无线设备的包络跟踪系统的功率放大器（PA）校准方法。 该方法包括以预定输入功率测量作为被测部件（PUT）的PA的输出功率。 另一步骤包括计算等于PA的输出功率除以预定输入功率的增益。 下一步涉及通过从期望的增益中减去所计算的增益来计算增益校正。 其他步骤包括使用增益校正应用于增益对PA电源电压的增益校正来确定期望增益的PA的预期电源电压，然后将PA的预期电源电压与输入功率存储在存储器中。

    Heterojunction bipolar transistor geometry for improved power amplifier performance
    32.
    发明授权
    Heterojunction bipolar transistor geometry for improved power amplifier performance 有权
    异质结双极晶体管几何，提高功率放大器性能

    公开(公告)号：US08994075B1

    公开(公告)日：2015-03-31

    申请号：US14051998

    申请日：2013-10-11

    Applicant: RF Micro Devices, Inc.

    Inventor： Brian G. Moser ,  Robert Saxer ,  Jing Zhang

    IPC: H01L31/0328 ,  H01L31/0336 ,  H01L31/072 ,  H01L31/109 ,  H01L29/737 ,  H01L29/10

    CPC classification number: H01L29/7371 ,  H01L29/0692 ,  H01L29/0813 ,  H01L29/0817 ,  H01L29/0826 ,  H01L29/42304

    Abstract: A heterojunction bipolar transistor includes a base mesa, an emitter assembly formed over the base mesa, and a base contact. The emitter assembly includes multiple circular sectors. Each circular sector is spaced apart from one another such that a sector gap is formed between radial sides of adjacent circular sectors. The base contact, which is formed over the base mesa, has a central portion and multiple radial members. Each radial member extends outward from the central portion of the base contact along a corresponding sector gap. As such, each of the circular sectors of the emitter assembly is separated by a radial member of the base contact. The number of circular sectors may vary from one embodiment to another. For example, the emitter assembly may have three, four, six, or more circular sectors.

    Abstract translation: 异质结双极晶体管包括基底台面，形成在基台面上的发射体组件和基底触点。 发射器组件包括多个圆形扇形。 每个圆形扇形体彼此间隔开，使得在相邻圆形扇形体的径向侧面之间形成扇形间隙。 形成在基台面上的基部接触件具有中心部分和多个径向部件。 每个径向构件沿着对应的扇形间隙从基座的中心部分向外延伸。 因此，发射器组件的每个圆形扇区由基部触点的径向构件分开。 圆形扇区的数量可以从一个实施例变化到另一个实施例。 例如，发射器组件可以具有三个，四个，六个或更多个圆形扇形。

    Temperature compensation attenuator
    33.
    发明授权
    Temperature compensation attenuator 有权
    温度补偿衰减器

    公开(公告)号：US08988127B2

    公开(公告)日：2015-03-24

    申请号：US13748119

    申请日：2013-01-23

    Applicant: RF Micro Devices, Inc.

    Inventor： Marcus Granger-Jones ,  Brad Nelson ,  Ed Franzwa

    IPC: H03L5/00 ,  H03H11/24

    CPC classification number: H03L5/00 ,  H01L2224/05553 ,  H01L2224/05554 ,  H01L2224/0603 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/49112 ,  H01L2224/49113 ,  H01L2924/181 ,  H03H11/245 ,  H01L2924/00014 ,  H01L2924/00012

    Abstract: In one embodiment, a temperature compensating attenuator is disclosed having an attenuation circuit and a control circuit. The temperature compensating attenuator circuit may include a first series connected attenuation circuit segment and a shunt connected attenuation circuit segment, as well as additional attenuation circuit segments. Each attenuation circuit segment includes a stack of transistors that are coupled to provide the attenuation circuit segment with an impedance attenuation level having a continuous impedance range. The control circuit may be operably associated with the stack of transistors in each attenuation circuit segment to control the attenuation level of the attenuation circuit. The temperature compensating attenuator includes a temperature compensating circuit that compensates for variations in operation of the attenuation circuit due to a temperature change.

    Abstract translation: 在一个实施例中，公开了具有衰减电路和控制电路的温度补偿衰减器。 温度补偿衰减器电路可以包括第一串联连接的衰减电路段和分流连接的衰减电路段，以及附加的衰减电路段。 每个衰减电路段包括一堆晶体管，其被耦合以向衰减电路段提供具有连续阻抗范围的阻抗衰减电平。 控制电路可以可操作地与每个衰减电路段中的晶体管堆叠相关联，以控制衰减电路的衰减电平。 温度补偿衰减器包括温度补偿电路，其补偿由于温度变化引起的衰减电路的工作变化。

    Pulsed behavior modeling with steady state average conditions
    36.
    发明授权
    Pulsed behavior modeling with steady state average conditions 有权
    脉冲行为建模与稳态平均条件

    公开(公告)号：US08952710B2

    公开(公告)日：2015-02-10

    申请号：US13548283

    申请日：2012-07-13

    Applicant: James M. Retz ,  Andrew F. Folkmann ,  Jean-Frederic Chiron

    Inventor： James M. Retz ,  Andrew F. Folkmann ,  Jean-Frederic Chiron

    IPC: G01R31/28

    CPC classification number: G01R31/28 ,  G01R31/2834 ,  G01R31/2839

    Abstract: A method for pulsed behavior modeling of a device under test (DUT) using steady state conditions is disclosed. The method includes providing an automated test system (ATS) programmed to capture at least one behavior of the DUT. The ATS then generates a DUT input power pulse that transitions from a predetermined steady state level to a predetermined pulse level and back to the predetermined steady state level. At least one behavior of the DUT is then captured by the ATS while the input power is at the predetermined pulse level. The ATS then steps the predetermined pulse level to a different predetermined pulse level, and the above steps are repeated until a range of predetermined pulse levels is swept. The ATS then steps the predetermined steady state level to a different steady state level, and the above steps are repeated until a range of predetermined steady state levels is swept.

    Abstract translation: 公开了一种使用稳态条件测试被测器件（DUT）的脉冲行为建模方法。 该方法包括提供被编程为捕获DUT的至少一个行为的自动测试系统（ATS）。 ATS然后产生从预定稳态电平转换到预定脉冲电平并返回到预定稳态电平的DUT输入功率脉冲。 然后，当输入功率处于预定脉冲电平时，由ATS捕获DUT的至少一个行为。 然后，ATS将预定脉冲电平调整到不同的预定脉冲电平，并重复上述步骤，直到扫描预定脉冲电平的范围。 ATS然后将预定的稳态电平步进到不同的稳态电平，并重复上述步骤直到扫描预定的稳态电平的范围。

    Tunable duplexer method using hybrid transformer with dual antenna
    37.
    发明授权
    Tunable duplexer method using hybrid transformer with dual antenna 有权
    使用双天线混合变压器的可调谐双工器方法

    公开(公告)号：US08933764B2

    公开(公告)日：2015-01-13

    申请号：US13435393

    申请日：2012-03-30

    Applicant: Nadim Khlat ,  Marcus Granger-Jones

    Inventor： Nadim Khlat ,  Marcus Granger-Jones

    IPC: H03H7/38 ,  H03H7/09 ,  H03H7/48 ,  H03H7/46 ,  H04B1/00 ,  H04B1/52

    CPC classification number: H03H7/48 ,  H03H7/09 ,  H03H7/38 ,  H03H7/463 ,  H04B1/0064 ,  H04B1/52 ,  H04B1/525

    Abstract: The present disclosure relates to a hybrid transformer duplexer apparatus. The hybrid transformer duplexer apparatus includes an autotransformer having a first port, a second port and a tap coupled to a first antenna port. A step-down transformer has a primary winding with a first terminal coupled to the first port of the autotransformer and a second terminal coupled to the second port of the autotransformer, and a secondary winding having a third terminal coupled to a second antenna port and a fourth terminal coupled to a common node.

    Abstract translation: 本公开涉及一种混合变压器双工器装置。 混合变压器双工器装置包括具有第一端口，第二端口和耦合到第一天线端口的抽头的自耦变压器。 降压变压器具有初级绕组，其具有耦合到自耦变压器的第一端口的第一端子和耦合到自耦变压器的第二端口的第二端子，以及次级绕组，其具有耦合到第二天线端口的第三端子和 第四终端耦合到公共节点。

    Carrier aggregation radio system
    40.
    发明授权
    Carrier aggregation radio system 有权
    运营商汇聚无线电系统

    公开(公告)号：US08892057B2

    公开(公告)日：2014-11-18

    申请号：US13569219

    申请日：2012-08-08

    Applicant: Nadim Khlat

    Inventor： Nadim Khlat

    IPC: H04B1/44 ,  H04B1/38 ,  H04M1/00 ,  H04B17/02 ,  H04B1/04 ,  H04B7/00 ,  H04B7/005 ,  H04W4/00 ,  H04B7/10 ,  H04L5/00 ,  H04L5/06

    CPC classification number: H04L5/00 ,  H04L5/001 ,  H04L5/06

    Abstract: A carrier aggregation radio system is provided. The carrier aggregation radio system includes a transceiver having a main receiver, a diversity receiver and a carrier aggregation receiver. The carrier aggregation radio system further includes a control system adapted to command a radio front end to route diversity signals from a diversity antenna to the main and diversity receivers in a first mode and to command the radio front end to route carrier aggregation signals from the diversity antenna to the carrier aggregation receiver in a second mode. The control system may also command a third mode in which diversity signals are routed to the main and diversity receivers while carrier aggregation signals are routed to the carrier aggregation receiver.

    Abstract translation: 提供载波聚合无线电系统。 载波聚合无线电系统包括具有主接收机，分集接收机和载波聚合接收机的收发机。 载波聚合无线电系统还包括控制系统，其适于命令无线电前端以分集天线将分集信号以第一模式路由到主分集接收机，并命令无线电前端从分集路由载波聚合信号 在第二模式中天线到载波聚合接收机。 控制系统还可以命令第三模式，其中分集信号被路由到主和分集接收机，而载波聚合信号被路由到载波聚合接收机。

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