公开(公告)号：US12237949B2

公开(公告)日：2025-02-25

申请号：US18369798

申请日：2023-09-18

Applicant: MEDIATEK INC.

Inventor： Chung-Hsien Tsai ,  Che-Yu Chiang ,  Yu-Ting Liu ,  Tsung-Lin Lee ,  Chia-Sheng Peng ,  Ting-Ming Yang

IPC: H04L25/03 ,  H04L25/49

Abstract: A communication receiver includes a first signal processing circuit and a second signal processing circuit. The first signal processing circuit includes a first feedforward equalizer and a decision circuit. The first feedforward equalizer processes a received signal to generate a first equalized signal. The decision circuit performs hard decision upon the first equalized signal to generate a first symbol decision signal. The second signal processing circuit includes a second feedforward equalizer, a decision feedforward equalizer, and a first decision feedback equalizer. The second feedforward equalizer processes the first equalized signal to generate a second equalized signal. The decision feedforward equalizer processes the first symbol decision signal to generate a third equalized signal. The first decision feedback equalizer generates a second symbol decision signal according to the second equalized signal and the third equalized signal.

公开(公告)号：US20240129167A1

公开(公告)日：2024-04-18

申请号：US18369798

申请日：2023-09-18

Applicant: MEDIATEK INC.

Inventor： Chung-Hsien Tsai ,  Che-Yu Chiang ,  Yu-Ting Liu ,  Tsung-Lin Lee ,  Chia-Sheng Peng ,  Ting-Ming Yang

IPC: H04L25/03

CPC classification number: H04L25/03057 ,  H04L25/49

Abstract: A communication receiver includes a first signal processing circuit and a second signal processing circuit. The first signal processing circuit includes a first feedforward equalizer and a decision circuit. The first feedforward equalizer processes a received signal to generate a first equalized signal. The decision circuit performs hard decision upon the first equalized signal to generate a first symbol decision signal. The second signal processing circuit includes a second feedforward equalizer, a decision feedforward equalizer, and a first decision feedback equalizer. The second feedforward equalizer processes the first equalized signal to generate a second equalized signal. The decision feedforward equalizer processes the first symbol decision signal to generate a third equalized signal. The first decision feedback equalizer generates a second symbol decision signal according to the second equalized signal and the third equalized signal.

公开(公告)号：US10483925B2

公开(公告)日：2019-11-19

申请号：US16053806

申请日：2018-08-03

Applicant: MEDIATEK INC.

Inventor： Sheng-Hong Yan ,  Da-Wei Sung ,  Chen-Yen Ho ,  Chia-Sheng Peng ,  Chien-Wei Kuan

IPC: H03F3/20 ,  H03F3/195 ,  H03F1/02 ,  H03F3/213 ,  H03F3/21 ,  H03F3/24

Abstract: A circuit module includes a power amplifier, a switch, and a bypass capacitor. The power amplifier has a signal input node coupled to an input signal, a signal output node to generate an output signal, and a power input node coupled to a supply output signal of a supply modulator. The switch is coupled between the power input node of the power amplifier and the bypass capacitor. The bypass capacitor is an equivalently removable bypass capacitor coupled between the switch and a ground level.

公开(公告)号：US20180048272A1

公开(公告)日：2018-02-15

申请号：US15492013

申请日：2017-04-20

Applicant: MEDIATEK Inc.

Inventor： Shih-Mei Lin ,  Chien-Wei Kuan ,  Chen-Yen Ho ,  Che-Hao Meng ,  Tso-Min Chen ,  Chia-Sheng Peng ,  Sheng-Hong Yan

IPC: H03F3/20 ,  H03F3/68 ,  H02M3/158

CPC classification number: H03F3/20 ,  H02M3/158 ,  H03F1/0227 ,  H03F3/195 ,  H03F3/245 ,  H03F3/68 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/432

Abstract: Provided is a power supply circuit for a wireless mobile device having a plurality of power amplification components. The power supply circuit includes: a first DC-DC converter, for providing at least one constant output voltage (which is provided to the power amplification components) and/or at least one DC intermediate voltage; a second DC-DC converter, for providing a DC component of at least one time-varying output voltage; and at least one linear amplifier. When the at least one linear amplifier receives the at least one DC intermediate voltage from the first DC-DC converter, the at least one linear amplifier provides at least one AC component of the at least one time-varying output voltage. The DC component and the at least one AC component of the at least one time-varying output voltage are combined into the at least one time-varying output voltage and provided to the power amplification components.

公开(公告)号：US20170005676A1

公开(公告)日：2017-01-05

申请号：US15177113

申请日：2016-06-08

Applicant: MEDIATEK INC

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

IPC: H04B1/04 ,  H04W52/52 ,  H04L27/36

CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/451 ,  H03F2200/511 ,  H04B2001/0425 ,  H04L27/367 ,  H04W52/52

Abstract: A communication unit comprises a decimator configured to sample a variable control signal and output a reduced bandwidth variable control signal; and a multi-level power supply, MLPS, comprising an input and an output, wherein the input is coupled to the decimator and configured to receive the reduced bandwidth variable control signal and, in response thereto, the output delivers multi-level output voltages to supply a power amplifier, PA, module.

Abstract translation: 通信单元包括抽取器，其被配置为对可变控制信号进行采样并输出减小的带宽可变控制信号; 以及包括输入和输出的多电平电源MLPS，其中所述输入耦合到所述抽取器并且被配置为接收所述减小的带宽可变控制信号，并且响应于此，所述输出将多电平输出电压提供给 提供功率放大器，PA模块。

公开(公告)号：US20160294490A1

公开(公告)日：2016-10-06

申请号：US15015134

申请日：2016-02-04

Applicant: MEDIATEK INC.

Inventor： Qiang Zhou ,  Ming-Chou Wu ,  Ting-Hsuan Kuo ,  Chia-Sheng Peng ,  Bernard Mark Tenbroek

IPC: H04B17/21

CPC classification number: H04B17/21 ,  H04B17/14

Abstract: A calibration method is applied to a wireless communication device having a programmable tuner and a signal processing path. The calibration method includes at least the following steps: configuring the programmable tuner to have a plurality of different tuner states, wherein the signal processing path has a first end and a second end, and the programmable tuner is coupled to the second end; when the programmable tuner is configured to have one of the different tuner states, obtaining a measured reflection coefficient at the first end of the signal processing path; and calibrating mapping relationship between a reflection coefficient at the first end of the signal processing path and a reflection coefficient at the second end of the signal processing path according to the different tuner states and measured reflection coefficients associated with the different tuner states.

Abstract translation: 校准方法应用于具有可编程调谐器和信号处理路径的无线通信设备。 所述校准方法至少包括以下步骤：将所述可编程调谐器配置为具有多个不同的调谐器状态，其中所述信号处理路径具有第一端和第二端，并且所述可编程调谐器耦合到所述第二端; 当可编程调谐器被配置为具有不同调谐器状态之一时，在信号处理路径的第一端获得测量的反射系数; 以及根据与不同的调谐器状态相关联的不同的调谐器状态和测量的反射系数，校准信号处理路径的第一端的反射系数与信号处理路径的第二端的反射系数之间的映射关系。