公开(公告)号：US09167514B2

公开(公告)日：2015-10-20

申请号：US13922924

申请日：2013-06-20

Applicant: Broadcom Corporation

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

IPC: H04B1/38 ,  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：US20140155117A1

公开(公告)日：2014-06-05

申请号：US13923902

申请日：2013-06-21

Applicant: Broadcom Corporation

Inventor： Ying Xia ,  Gowrisankar Somichetty ,  Bongseok Park ,  Sriram Rajagopal ,  Sriraman Dakshinamurthy ,  Robert Gustav Lorenz

IPC: H04W52/54

CPC classification number: H04W52/54 ,  H04W52/0261 ,  H04W52/08 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/168

Abstract: A communication device, such as a smart phone, receives a power specification message from a network controller. The power specification message specifies an output power applicable for a particular communication subframe or symbol within the subframe. In response to the power specification message, the communication device determines a new shaping table and replaces an existing shaping table with the new shaping table. The communication device uses the shaping table to generate an envelope signal for an envelope tracking power supply, and the new shaping table is adapted to provide power saving operation at the specified output power.

Abstract translation: 诸如智能电话的通信设备从网络控制器接收电力指定消息。 功率指定消息指定适用于子帧内的特定通信子帧或符号的输出功率。 响应于功率规格消息，通信设备确定新的整形表，并用新的整形表替换现有的整形表。 通信装置使用整形表来生成用于包络跟踪电源的包络信号，并且新的整形表适于以指定的输出功率提供省电操作。

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。