公开(公告)号：US20140155116A1

公开(公告)日：2014-06-05

申请号：US13922836

申请日：2013-06-20

Applicant: Broadcom Corporation

Inventor： Sriraman Dakshinamurthy ,  Robert Gustav Lorenz

IPC: H04W52/02

CPC classification number: H04W52/0251 ,  H04W52/0261 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/168

Abstract: A communication device, such as a smart phone, receives operational parameters from a network controller. The operational parameters may include, as examples, bandwidth allocation, center frequency, and receive/transmit band assignments. The operational parameters (e.g., bandwidth allocation) may change on a subframe by subframe basis. In response to the operational parameters, the communication device determines a new configuration for an envelope tracking (ET) power supply. The communication device modifies the ET power supply to implement the new configuration. The new configuration may be chosen to adapt the ET power supply to meet the demands of the operation parameters, without excess power consumption.

Abstract translation: 诸如智能电话的通信设备从网络控制器接收操作参数。 作为示例，操作参数可以包括带宽分配，中心频率和接收/发送频带分配。 操作参数（例如，带宽分配）可以逐子帧地改变。 响应于操作参数，通信设备确定用于包络跟踪（ET）电源的新配置。 通信设备修改ET电源以实现新配置。 可以选择新的配置来适应ET电源以满足操作参数的需求，而不需要超出功耗。

公开(公告)号：US20140155002A1

公开(公告)日：2014-06-05

申请号：US13930433

申请日：2013-06-28

Applicant: Broadcom Corporation

Inventor： Sriraman Dakshinamurthy ,  Robert Gustav Lorenz

IPC: H04W52/02 ,  H04B1/04 ,  H04B1/16

CPC classification number: H04W52/028 ,  H03F1/3223 ,  H03F3/24 ,  H04B1/04 ,  H04B1/0475 ,  H04B1/1615 ,  H04B2001/0441 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/40

Abstract: An envelope tracking circuit for a transmit and receive path for a telecommunications device includes a filter to reduce the bandwidth of the transmit signal. The envelope of the filtered signal having the lower bandwidth is used to dynamically modulates the power amplifier voltage supply signal. The filter depends on current instantaneous values and also depends in a nonlinear way on instantaneous past and future values of the envelope tracking signal. The filter may be symmetric about peaks of the transmitted signal.

Abstract translation: 用于电信设备的发送和接收路径的信封跟踪电路包括用于减少发送信号的带宽的滤波器。 具有较低带宽的滤波信号的包络用于动态调制功率放大器电压供应信号。 滤波器取决于当前瞬时值，并且还以非线性方式依赖于包络跟踪信号的瞬时过去和未来值。 滤波器可以关于发射信号的峰值对称。

公开(公告)号：US20150155894A1

公开(公告)日：2015-06-04

申请号：US14138422

申请日：2013-12-23

Applicant: BROADCOM CORPORATION

Inventor： Sriraman Dakshinamurthy ,  Bongseok Park ,  Michael James Graziano ,  Robert Gustav Lorenz

IPC: H04B1/04

CPC classification number: H04B1/0458 ,  H03F1/02 ,  H03F3/24 ,  H04B2001/045

Abstract: A wireless device performs antenna tuner updates at times that minimize adverse effects on transmit and receive channels of the wireless device. The wireless device includes an antenna, an RF front end, an antenna tuner circuit and a processing module. The antenna tuner circuit is configured to substantially match a source impedance of the RF front end to a load impedance of the antenna based on a control signal. The processing module is configured to identify an update time for providing the control signal to the antenna tuner circuit that minimizes adverse effects on at least one of the transmit channel and the receive channel.

Abstract translation: 无线设备在最小化对无线设备的发射和接收信道的不利影响的时候执行天线调谐器更新。 无线设备包括天线，RF前端，天线调谐器电路和处理模块。 天线调谐器电路被配置为基于控制信号将RF前端的源阻抗基本上与天线的负载阻抗相匹配。 处理模块被配置为识别用于向天线调谐器电路提供控制信号的更新时间，其最小化对发射信道和接收信道中的至少一个的不利影响。

公开(公告)号：US20140155128A1

公开(公告)日：2014-06-05

申请号：US13922924

申请日：2013-06-20

Applicant: Broadcom Corporation

Inventor： Sriraman Dakshinamurthy ,  Bongseok Park ,  Ying Xia ,  Robert Gustav Lorenz

IPC: H04W52/02

CPC classification number: H04W52/0209 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/168

Abstract: A communication device, such as a smart phone, includes an envelope tracking power supply that provides a voltage supply signal for a power amplifier. The envelope tracking signal input to the envelope tracking power supply arises from application of a shaping table on a desired transmit signal. The shaping table implements non-uniform gain compression across a range of output powers, and in particular may aggressively compress the power amplifier for low output powers, and less aggressively compress the power amplifier at high output powers. The non-uniform gain implemented via the shaping table may provide significant power savings, while still allowing the transmitter to meet spectral mask requirements.

Abstract translation: 诸如智能电话的通信设备包括为功率放大器提供电压信号的包络跟踪电源。 输入到包络跟踪电源的包络跟踪信号源于对期望的发射信号的整形表的应用。 成形台在一定范围的输出功率下实现不均匀的增益压缩，特别是可以大功率地压缩功率放大器以实现低输出功率，并且在较高的输出功率下较不积极地压缩功率放大器。 通过整形台实现的非均匀增益可以提供显着的功率节省，同时仍允许发射机满足光谱掩模要求。

公开(公告)号：US20140155127A1

公开(公告)日：2014-06-05

申请号：US13922813

申请日：2013-06-20

Applicant: Broadcom Corporation

Inventor： Sriraman Dakshinamurthy ,  Robert Gustav Lorenz

IPC: H04W52/02

CPC classification number: H04W52/028 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/168

Abstract: In response to changing power output requirements of a UE, an envelope tracking (ET) path of a transmission chain changes power modes. When the UE output power is below a threshold, the ET path may switch an ET power supply to a low power mode. With the switch to low power mode, the UE may also set one or more of the other components in the ET path to a low power mode of operation to save additional power.

Abstract translation: 响应于UE的功率输出要求的变化，传输链的包络跟踪（ET）路径改变功率模式。 当UE输出功率低于阈值时，ET路径可以将ET电源切换到低功耗模式。 随着切换到低功率模式，UE还可以将ET路径中的其它组件中的一个或多个设置为低功率操作模式以节省附加功率。