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公开(公告)号：US20180159568A1
公开(公告)日：2018-06-07
申请号：US15662903
申请日：2017-07-28
Applicant: MediaTek, Inc.
Inventor： Toru Matsuura , Paul Cheng Po Liang
CPC classification number: H04B1/0475 , H03F1/3247 , H03F1/3258 , H03F3/189 , H03F3/24 , H03F2200/129 , H03F2200/411 , H03F2200/451 , H03F2201/3233 , H04B1/006 , H04B2001/0425 , H04B2001/0433 , H04L25/03343 , H04L27/368
Abstract: A transmitter includes a signal generator arranged to generate a digital baseband signal representative of a signal for transmission; a digital predistortion, DPD, circuit configured to predistort the digital baseband signal; and a power amplifier is arranged to amplify the predistorted signal. The DPD circuit includes a first signal shaping circuit operably coupled to the signal generator and the DPD predistortion circuit and configured to receive the generated digital signal and apply first envelope shaping to shape the predistortion applied to at least the amplitude of the generated digital signal and produce a first DPD signal; a second signal shaping circuit operably coupled to the signal generator and an output of the DPD predistortion circuit and configured to receive and apply the second envelope shaped digital signal to the first DPD signal and produce a second envelope shaped DPD signal. A multiplier is configured to receive and multiply the digital signal and the second envelope shaped DPD signal and output a digitally predistorted signal for transmission.
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公开(公告)号：US20180159567A1
公开(公告)日：2018-06-07
申请号：US15662848
申请日：2017-07-28
Applicant: MediaTek, Inc.
Inventor： Toru Matsuura , Paul Cheng Po Liang
CPC classification number: H04B1/0475 , H03F1/3247 , H03F1/3258 , H03F3/189 , H03F3/24 , H03F2200/129 , H03F2200/411 , H03F2200/451 , H03F2201/3233 , H04B1/006 , H04B2001/0425 , H04B2001/0433 , H04L25/03343 , H04L27/368
Abstract: A transmitter includes a signal generator arranged to generate a digital baseband signal representative of a signal for transmission; a digital predistortion, DPD, circuit configured to predistort the digital baseband signal; and a signal adjustment circuit operably coupled to the signal generator and the DPD circuit and configured to receive the generated signal and apply shaping to adjust the predistortion applied to the envelope of the generated signal.
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公开(公告)号：US09876517B2
公开(公告)日：2018-01-23
申请号：US14754860
申请日：2015-06-30
Applicant: MEDIATEK Inc.
Inventor： Sheng-Hong Yan , Sheng-Hao Chen , Paul Cheng Po Liang , Jen-Che Tsai
CPC classification number: H04B1/1081 , H04B1/10 , H04B1/123 , H04B17/11
Abstract: A radio frequency (RF) receiver includes a digital tuning engine; and I-path and Q-path analog filters, tuned by the digital tuning engine. The digital tuning engine gets an I/Q imbalance difference, and the digital tuning engines tunes the I-path analog filter and/or the Q-path analog filter based on the I/O imbalance difference.
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公开(公告)号：US09800274B2
公开(公告)日：2017-10-24
申请号：US15177113
申请日：2016-06-08
Applicant: MEDIATEK INC
Inventor： Sheng-Hong Yan , Chia-Sheng Peng , Paul Cheng Po Liang
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.
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15.发明授权Method for suppressing transmission noise comprised in received downlink signal and communications apparatus utilizing the same 有权用于抑制接收的下行链路信号中包含的传输噪声的方法和利用其的通信装置公开(公告)号：US09160462B2
公开(公告)日：2015-10-13
申请号：US13777286
申请日：2013-02-26
Applicant: MediaTek Inc.
Inventor： Chih-Yuan Lin , Qiang Zhou , Charles Chien , Paul Cheng Po Liang , Wen-Wei Yang
CPC classification number: H04B1/1036 , H04B1/0067 , H04B1/0475 , H04B1/1081 , H04B1/40 , H04B1/525 , H04B15/00
Abstract: A communications apparatus is disclosed. A first radio module provides a first wireless communications service and communicates with a first communications device in compliance with a first protocol. A second radio module provides a second wireless communications service and communicates with a second communications device in compliance with a second protocol. A transmission noise suppression device is operative to process downlink signals received by the first radio module to cancel transmission noise comprised in the downlink signals, where the transmission noise is generated when the second radio module is processing uplink signals to be transmitted.
Abstract translation: 公开了一种通信装置。 第一无线电模块提供第一无线通信服务并根据第一协议与第一通信设备进行通信。 第二无线电模块提供第二无线通信服务，并根据第二协议与第二通信设备进行通信。 传输噪声抑制装置用于处理由第一无线电模块接收的下行链路信号以消除包括在下行链路信号中的传输噪声，其中当第二无线电模块正在处理要发送的上行链路信号时产生传输噪声。
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Patent Agency Ranking
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.
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公开(公告)号：US09680434B2
公开(公告)日：2017-06-13
申请号：US13956376
申请日：2013-08-01
Applicant: MEDIATEK INC.
Inventor： Sheng-Hong Yan , Paul Cheng Po Liang
CPC classification number: H03G3/004 , H03F1/0216 , H03F1/0222 , H03F1/3247 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2201/3233 , H03G3/3042
Abstract: A method of calibrating an envelope tracking system for a supply voltage for a power amplifier module within a radio frequency (RF) transmitter of a wireless communication unit is described. The method comprising, within at least one signal processing module of the wireless communication unit, applying a training signal comprising an envelope that varies with time to an input of the RF transmitter, receiving at least an indication of instantaneous output signal values for the power amplifier module in response to the training signal, calculating instantaneous gain values based at least partly on the received output power values, and adjusting a mapping function between an instantaneous envelope of a waveform signal to be amplified by the power amplifier module and the power amplifier module supply voltage to achieve a power amplifier module gain, for example that is monotonically increasing as a function of power amplifier output power.
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公开(公告)号：US09654059B2
公开(公告)日：2017-05-16
申请号：US14854054
申请日：2015-09-15
Applicant: MEDIATEK INC.
Inventor： Ting-Hsuan Kuo , Qiang Zhou , Ming-Chou Wu , Paul Cheng Po Liang , Bernard Mark Tenbroek
CPC classification number: H03F1/56 , H03F3/19 , H03F3/245 , H03F2200/222 , H03F2200/294 , H03F2200/387 , H04B1/0458 , H04B1/18 , H04B2001/0416
Abstract: An impedance tuning control apparatus has a processing circuit and an output circuit. The processing circuit determines a first control setting according to a first performance metric, and performs a search operation with a search start point set by the first control setting to find a second control setting according to a second performance metric. The second performance metric is different from the first performance metric. The output circuit outputs a final control setting to a tuner, wherein the final control setting is derived from the second control setting.
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19.发明授权Method for suppressing transmission noise comprised in received downlink signal and communications apparatus utilizing the same 有权用于抑制接收的下行链路信号中包含的传输噪声的方法和利用其的通信装置公开(公告)号：US09490856B2
公开(公告)日：2016-11-08
申请号：US14847205
申请日：2015-09-08
Applicant: MediaTek Inc.
Inventor： Chih-Yuan Lin , Qiang Zhou , Charles Chien , Paul Cheng Po Liang , Wen-Wei Yang
CPC classification number: H04B1/1036 , H04B1/0067 , H04B1/0475 , H04B1/1081 , H04B1/40 , H04B1/525 , H04B15/00
Abstract: A method suppresses transmission noise comprised in a plurality of downlink signals received by one of a first radio module or a second radio module comprised in a communications apparatus. The method receives a plurality of first signals and a plurality of second signals, wherein the first signals and the second signals are the downlink signals respectively received via different antennas of the one of the first radio module or the second radio module, or the first signals are the downlink signals received by the one of the first radio module or the second radio module and the second signals are a portion of the uplink signals provided by the other one of the first radio module and the second radio module, and processes the plurality of first signals and the plurality of second signals to cancel transmission noise comprised in the plurality of downlink signals.
Abstract translation: 一种方法抑制由通信装置中包括的第一无线电模块或第二无线电模块之一接收的多个下行链路信号中包含的传输噪声。 该方法接收多个第一信号和多个第二信号，其中第一信号和第二信号是分别经由第一无线电模块或第二无线电模块之一的不同天线接收的下行链路信号，或第一信号 是由第一无线电模块或第二无线电模块之一接收的下行链路信号，并且第二信号是由第一无线电模块和第二无线电模块中的另一个提供的上行链路信号的一部分，并且处理多个 第一信号和多个第二信号以消除包含在多个下行链路信号中的传输噪声。
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20.发明申请APPARATUS AND METHOD FOR CONTROLLING IMPEDANCE TUNING BY USING HYBRID CONTROL ALGORITHM 有权使用混合控制算法控制阻尼调谐的装置和方法公开(公告)号：US20160126904A1
公开(公告)日：2016-05-05
申请号：US14854054
申请日：2015-09-15
Applicant: Mediatek Inc.
Inventor： Ting-Hsuan Kuo , Qiang Zhou , Ming-Chou Wu , Paul Cheng Po Liang , Bernard Mark Tenbroek
CPC classification number: H03F1/56 , H03F3/19 , H03F3/245 , H03F2200/222 , H03F2200/294 , H03F2200/387 , H04B1/0458 , H04B1/18 , H04B2001/0416
Abstract: An impedance tuning control apparatus has a processing circuit and an output circuit. The processing circuit determines a first control setting according to a first performance metric, and performs a search operation with a search start point set by the first control setting to find a second control setting according to a second performance metric. The second performance metric is different from the first performance metric. The output circuit outputs a final control setting to a tuner, wherein the final control setting is derived from the second control setting.
Abstract translation: 阻抗调谐控制装置具有处理电路和输出电路。 处理电路根据第一性能度量确定第一控制设置，并且利用由第一控制设置设置的搜索开始点执行搜索操作，以根据第二性能度量找到第二控制设置。 第二个性能指标与第一个性能指标不同。 输出电路向调谐器输出最终控制设置，其中最终控制设置是从第二控制设置导出的。
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