公开(公告)号：US20150236729A1

公开(公告)日：2015-08-20

申请号：US14181714

申请日：2014-02-16

Applicant: MEDIATEK INC.

Inventor： Chia-Sheng Peng ,  Wei-Cheng Liu ,  Sheng-Hong Yan ,  Paul Cheng Po Liang

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F1/3241 ,  H03F1/56 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H04B1/0458 ,  H04B2001/0408 ,  H04B2001/0425

Abstract: A communication unit comprises a radio frequency, RF, transmitter comprising: a power amplifier, PA, module; an envelope tracking system operably coupled to the PA module and arranged to variably control a supply voltage for the PA module; and a load control system operably coupled to an output of the PA module and arranged to control a power amplifier output load.

Abstract translation: 通信单元包括射频，RF，发射机，包括：功率放大器PA，模块; 包络跟踪系统，其可操作地耦合到所述PA模块并且布置成可变地控制所述PA模块的电源电压; 以及负载控制系统，其可操作地耦合到所述PA模块的输出并被布置成控制功率放大器的输出负载。

公开(公告)号：US20140378188A1

公开(公告)日：2014-12-25

申请号：US13924642

申请日：2013-06-24

Applicant: MEDIATEK INC.

Inventor： Wei-Cheng Liu ,  Chun-Jen Tsai ,  Ting-Wei Kang

IPC: H04W52/02 ,  H03G3/20

CPC classification number: H04W52/0261 ,  H03G3/20 ,  Y02D70/122 ,  Y02D70/124 ,  Y02D70/126 ,  Y02D70/142

Abstract: A wireless communications circuit includes: a transceiver; a power amplifier module including a plurality of power amplifiers coupled to the transceiver; a filter module, including a plurality of filters coupled to the power amplifier module; an antenna switching module coupled between the filter module and an antenna; a tunable matching network coupled between the antenna and the antenna switching module; and a baseband circuit coupled to the tunable matching network. The baseband circuit is used for generating a control signal to the tunable matching network to adjust an impedance of the tunable matching network, wherein the impedance of the tunable matching network is adjusted to be different values under different operating conditions of the wireless communications circuit.

Abstract translation: 无线通信电路包括：收发器; 功率放大器模块，包括耦合到所述收发器的多个功率放大器; 滤波器模块，包括耦合到功率放大器模块的多个滤波器; 耦合在所述滤波器模块和天线之间的天线切换模块; 耦合在天线和天线切换模块之间的可调匹配网络; 以及耦合到可调谐匹配网络的基带电路。 基带电路用于产生到可调谐匹配网络的控制信号，以调整可调谐匹配网络的阻抗，其中在无线通信电路的不同操作条件下将可调谐匹配网络的阻抗调整为不同的值。

公开(公告)号：US09520907B2

公开(公告)日：2016-12-13

申请号：US14181714

申请日：2014-02-16

Applicant: MEDIATEK INC.

Inventor： Chia-Sheng Peng ,  Wei-Cheng Liu ,  Sheng-Hong Yan ,  Paul Cheng Po Liang

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F1/3241 ,  H03F1/56 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H04B1/0458 ,  H04B2001/0408 ,  H04B2001/0425

Abstract: A communication unit comprises a radio frequency, RF, transmitter comprising: a power amplifier, PA, module; an envelope tracking system operably coupled to the PA module and arranged to variably control a supply voltage for the PA module; and a load control system operably coupled to an output of the PA module and arranged to control a power amplifier output load.

Abstract translation: 通信单元包括射频，RF，发射机，包括：功率放大器PA，模块; 包络跟踪系统，其可操作地耦合到所述PA模块并且布置成可变地控制所述PA模块的电源电压; 以及负载控制系统，其可操作地耦合到所述PA模块的输出并被布置成控制功率放大器的输出负载。

公开(公告)号：US20150236877A1

公开(公告)日：2015-08-20

申请号：US14180364

申请日：2014-02-14

Applicant: MEDIATEK INC.

Inventor： Chia-Sheng Peng ,  Wei-Cheng Liu ,  Sheng-Hong Yan ,  Paul Cheng Po Liang

IPC: H04L25/08

CPC classification number: H04L25/08 ,  H03F1/0227 ,  H03F3/245 ,  H03F2200/102 ,  H03G3/3042 ,  H04B1/0458 ,  H04L27/368

Abstract: A communication unit comprises a radio frequency, RF, transmitter comprising: a power amplifier, PA, module; an envelope tracking system operably coupled to the PA module and arranged to variably control a supply voltage for the PA module; and a load control system operably coupled to an output of the PA module and arranged to control a power amplifier output load.

公开(公告)号：US09049664B2

公开(公告)日：2015-06-02

申请号：US13924642

申请日：2013-06-24

Applicant: MEDIATEK INC.

Inventor： Wei-Cheng Liu ,  Chun-Jen Tsai ,  Ting-Wei Kang

IPC: H04W52/02 ,  H03G3/20

CPC classification number: H04W52/0261 ,  H03G3/20 ,  Y02D70/122 ,  Y02D70/124 ,  Y02D70/126 ,  Y02D70/142

Abstract: A wireless communications circuit includes: a transceiver; a power amplifier module including a plurality of power amplifiers coupled to the transceiver; a filter module, including a plurality of filters coupled to the power amplifier module; an antenna switching module coupled between the filter module and an antenna; a tunable matching network coupled between the antenna and the antenna switching module; and a baseband circuit coupled to the tunable matching network. The baseband circuit is used for generating a control signal to the tunable matching network to adjust an impedance of the tunable matching network, wherein the impedance of the tunable matching network is adjusted to be different values under different operating conditions of the wireless communications circuit.

Abstract translation: 无线通信电路包括：收发器; 功率放大器模块，包括耦合到所述收发器的多个功率放大器; 滤波器模块，包括耦合到功率放大器模块的多个滤波器; 耦合在所述滤波器模块和天线之间的天线切换模块; 耦合在天线和天线切换模块之间的可调匹配网络; 以及耦合到可调谐匹配网络的基带电路。 基带电路用于产生到可调谐匹配网络的控制信号，以调整可调匹配网络的阻抗，其中在无线通信电路的不同操作条件下将可调谐匹配网络的阻抗调整为不同的值。