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公开(公告)号：US09912306B1
公开(公告)日：2018-03-06
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
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.
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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。
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公开(公告)号：US09998241B2
公开(公告)日：2018-06-12
申请号：US14625949
申请日：2015-02-19
Applicant: MEDIATEK INC.
Inventor： Chiou-Wei Tsai , Chia-Sheng Peng , Sheng-Hong Yan
Abstract: Apparatus and methods are provided to calibrate a closed-loop envelop tracking system for a power amplifier of a wireless transmitter using standardized modulation signals. In one novel aspect, a closed-loop adaptive method is used to track changes in PA nonlinearity due to environmental or circuitry changes during operating condition using standardized modulation signals. In one embodiment, the PA supply voltage compensation lookup table (LUT) and/or the phase compensation LUT is updated during normal operation to sustain good linearity and efficiency performance. In another novel aspect, the PA target response is adjusted in response to changes in PA-related system configuration, such as changes in PA bias settings, and/or indicators measured from the transmitter such as changes in impedance or temperature changes for the RF module or the PA module. The PA supply voltage compensation LUT and/or the phase LUT is updated accordingly upon adjustment of the PA target response.
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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。
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公开(公告)号：US09065509B1
公开(公告)日：2015-06-23
申请号：US14151786
申请日：2014-01-09
Applicant: MEDIATEK INC.
Inventor： Sheng-Hong Yan , Hao-Ping Hong
CPC classification number: H04L27/3411 , H03F3/24 , H03F2200/105 , H03F2200/465 , H03F2200/504 , H04B1/0475 , H04B2001/0408 , H04B2001/0416
Abstract: A communication unit includes a radio frequency, RF, transmitter having: a power amplifier, PA, module; and an envelope tracking system operably coupled to the PA module and having a supply modulator arranged to variably control a supply voltage for the PA module in response to a number of input samples of an envelope signal; wherein the envelope tracking system further includes at least one slew rate module arranged to re-distribute a maximum slew rate across the number of input samples in a provision of a variable power supply to the PA module.
Abstract translation: 通信单元包括射频，RF，发射机，具有：功率放大器，PA，模块; 以及包络跟踪系统，其可操作地耦合到所述PA模块并且具有电源调制器，所述电源调制器布置成响应于所述包络信号的输入样本的数量可变地控制所述PA模块的电源电压; 其中所述包络跟踪系统还包括至少一个压摆率模块，所述至少一个压摆率模块被布置成在向所述PA模块提供可变电源的情况下，跨越所述多个输入样本重新分配最大转换速率。
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Patent Agency Ranking
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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公开(公告)号：US09288098B2
公开(公告)日：2016-03-15
申请号：US14612305
申请日：2015-02-03
Applicant: MEDIATEK INC.
Inventor： Sheng-Hong Yan , Hao-Ping Hong
CPC classification number: H04L27/3411 , H03F3/24 , H03F2200/105 , H03F2200/465 , H03F2200/504 , H04B1/0475 , H04B2001/0408 , H04B2001/0416
Abstract: A communication unit has an envelope tracking system operably coupled to a power amplifier, PA, module. The envelope tracking system has at least one slew rate module arranged to re-distribute a slew rate across a number of input samples according to a maximum slew rate of the number of input samples; and a supply modulator arranged to variably control a supply voltage for the PA module in response to an output of the at least one slew rate module.
Abstract translation: 通信单元具有可操作地耦合到功率放大器PA模块的包络跟踪系统。 包络跟踪系统具有至少一个压摆率模块，其布置成根据输入样本数量的最大转换速率，跨多个输入样本重新分配压摆率; 以及电源调制器，其布置成响应于所述至少一个压摆率模块的输出可变地控制所述PA模块的电源电压。
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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：US20150194988A1
公开(公告)日：2015-07-09
申请号：US14151786
申请日：2014-01-09
Applicant: MEDIATEK INC.
Inventor： Sheng-Hong Yan , Hao-Ping Hong
IPC: H04B1/04
CPC classification number: H04L27/3411 , H03F3/24 , H03F2200/105 , H03F2200/465 , H03F2200/504 , H04B1/0475 , H04B2001/0408 , H04B2001/0416
Abstract: A communication unit includes a radio frequency, RF, transmitter having: a power amplifier, PA, module; and an envelope tracking system operably coupled to the PA module and having a supply modulator arranged to variably control a supply voltage for the PA module in response to a number of input samples of an envelope signal; wherein the envelope tracking system further includes at least one slew rate module arranged to re-distribute a maximum slew rate across the number of input samples in a provision of a variable power supply to the PA module.
Abstract translation: 通信单元包括射频，RF，发射机，具有：功率放大器，PA，模块; 以及包络跟踪系统，其可操作地耦合到所述PA模块并且具有电源调制器，所述电源调制器布置成响应于所述包络信号的输入样本的数量可变地控制所述PA模块的电源电压; 其中所述包络跟踪系统还包括至少一个压摆率模块，所述至少一个压摆率模块被布置成在向所述PA模块提供可变电源的情况下，跨越所述多个输入样本重新分配最大转换速率。
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