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：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。