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公开(公告)号：US20200144975A1
公开(公告)日：2020-05-07
申请号：US16595498
申请日：2019-10-08
Applicant: MEDIATEK INC.
Inventor： Chih-Hao Sun , Yu-Tsung Lo , Yi-Bin Lee
Abstract: The present invention provides a receiver including a first band group, a second band group and a mixer. The first band group includes at least one LNA, wherein the first band group is configured to select one first LNA to receive a first input signal to generate an amplified first input signal. The second band group includes at least one LNA, wherein the second band group is configured to select one second LNA to receive a second input signal to generate an amplified second input signal. The first band group and the second band group are coupled to a first input terminal and a second input terminal of the mixer, respectively, and the mixer receives one of the amplified first input signal and the amplified second input signal to generate an output signal.
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公开(公告)号：US09374261B2
公开(公告)日：2016-06-21
申请号：US14619082
申请日：2015-02-11
Applicant: MEDIATEK INC.
Inventor： Chih-Hao Sun , Chi-Yao Yu
CPC classification number: H04L27/361 , H04L27/2075
Abstract: A signal modulator includes: a modulating circuit; a first signal trace block arranged to conduct a first in-phase oscillating signal to the modulating circuit, and conduct a first quadrature-phase oscillating signal to the modulating circuit; and a second signal trace block arranged to conduct a second in-phase oscillating signal to the modulating circuit, and conduct a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the first in-phase oscillating signal caused by the first signal trace block substantially equals a phase difference of the second quadrature-phase oscillating signal caused by the second signal trace block, a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the second in-phase oscillating signal caused by the second signal trace block substantially equals a phase difference of the first quadrature-phase oscillating signal caused by the first signal trace block.
Abstract translation: 信号调制器包括：调制电路; 第一信号轨迹块，布置成将第一同相振荡信号传导到调制电路，并且向调制电路传导第一正交振荡信号; 以及第二信号轨迹块，布置成将第二同相振荡信号传导到调制电路，并且向调制电路传导第二正交振荡信号，并且由第二同相振荡信号引起的第一同相振荡信号的相位差 第一信号跟踪块基本上等于由第二信号跟踪块引起的第二正交相位振荡信号的相位差，到调制电路的第二正交相位振荡信号和第二同相振荡信号的相位差引起的 由第二信号跟踪块基本上等于由第一信号跟踪块引起的第一正交相位振荡信号的相位差。
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3.发明申请SIGNAL PROCESSING CIRCUIT FOR MITIGATING PULLING EFFECT AND ASSOCIATED METHOD 审中-公开用于减轻牵引效应和相关方法的信号处理电路公开(公告)号：US20160164464A1
公开(公告)日：2016-06-09
申请号：US14738941
申请日：2015-06-15
Applicant: Mediatek Inc.
Inventor： Chih-Hao Sun
CPC classification number: H03K5/00006 , H03D7/00 , H03D2200/009
Abstract: A signal processing circuit has a first mixer, a first amplifier, and a pulling effect mitigation circuit. The first mixer mixes a first input signal and a first oscillation signal to generate a first output signal, wherein the first oscillation signal is generated by dividing a frequency of a reference clock with a frequency dividing factor. The first amplifier amplifies the first output signal, and generates an amplified output signal at an output terminal of the first amplifier. The pulling effect mitigation circuit is coupled to the output terminal of the first amplifier, and generates a compensation signal to the output terminal for reducing at least an Nth harmonic of the amplified output signal, wherein a value of N is equal to the frequency dividing factor.
Abstract translation: 信号处理电路具有第一混频器，第一放大器和拉动效应减轻电路。 第一混频器混合第一输入信号和第一振荡信号以产生第一输出信号，其中通过用参考时钟的频率除频率分频来产生第一振荡信号。 第一放大器放大第一输出信号，并在第一放大器的输出端产生放大的输出信号。 牵引效应减轻电路耦合到第一放大器的输出端，并且向输出端生成补偿信号，以减少放大的输出信号的至少N次谐波，其中N的值等于分频因子 。
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公开(公告)号：US09172408B2
公开(公告)日：2015-10-27
申请号：US14037329
申请日：2013-09-25
Applicant: MEDIATEK INC.
Inventor： Hsiang-Hui Chang , Li-Shin Lai , Chih-Jung Chen , Chih-Hao Sun
CPC classification number: H04B1/0475 , H04B1/0483 , H04L27/04
Abstract: A transmitter includes a first channel and a second channel. The first channel includes a first mixer, and is used for processing a first input signal to generate a first output signal; the second channel includes a second mixer, where the second channel does not receive any input signal. When the transmitter is operated under a first mode, both the first mixer and the second mixer receive oscillation signals.
Abstract translation: 发射机包括第一信道和第二信道。 第一通道包括第一混频器，用于处理第一输入信号以产生第一输出信号; 第二通道包括第二混频器，其中第二通道不接收任何输入信号。 当发射机在第一模式下操作时，第一混频器和第二混频器都接收振荡信号。
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公开(公告)号：US10756686B2
公开(公告)日：2020-08-25
申请号：US16595498
申请日：2019-10-08
Applicant: MEDIATEK INC.
Inventor： Chih-Hao Sun , Yu-Tsung Lo , Yi-Bin Lee
Abstract: The present invention provides a receiver including a first band group, a second band group and a mixer. The first band group includes at least one LNA, wherein the first band group is configured to select one first LNA to receive a first input signal to generate an amplified first input signal. The second band group includes at least one LNA, wherein the second band group is configured to select one second LNA to receive a second input signal to generate an amplified second input signal. The first band group and the second band group are coupled to a first input terminal and a second input terminal of the mixer, respectively, and the mixer receives one of the amplified first input signal and the amplified second input signal to generate an output signal.
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Patent Agency Ranking
公开(公告)号：US10680560B2
公开(公告)日：2020-06-09
申请号：US16047176
申请日：2018-07-27
Applicant: MediaTek, Inc.
Inventor： Chih-Hao Sun , Po-Yun Hsiao , Chin-Yen Chao , Yi-Bin Lee
IPC: H03G3/30 , H03F1/08 , H03F3/195 , H03F1/02 , H04B1/04 , H03F3/72 , H03F3/21 , H03F3/193 , H03F1/18 , H03F3/24
Abstract: A communication unit includes a plurality of parallel radio frequency, RF, signal paths. Located between a first RF signal path of the plurality of parallel RF signal paths comprising at least one first RF amplifier and a second signal path comprising at least one second RF amplifier is one of a shared inductor or shared transformer. The at least one first RF amplifier is coupled to a supply voltage via a first switch and at least one second RF amplifier is coupled to the supply voltage via a second switch, and the first switch is closed that provides the supply voltage to the at least one second RF amplifier whilst the second switch is opened.
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公开(公告)号：US20190068128A1
公开(公告)日：2019-02-28
申请号：US16047176
申请日：2018-07-27
Applicant: MediaTek, Inc.
Inventor： Chih-Hao Sun , Po-Yun Hsiao , Chin-Yen Chao , Yi-Bin Lee
CPC classification number: H03F1/083 , H03F1/0205 , H03F1/0277 , H03F1/18 , H03F3/193 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/294 , H03F2200/451 , H03G3/3042 , H03G2201/103 , H03G2201/307 , H04B1/04 , H04B2001/0408
Abstract: A communication unit includes a plurality of parallel radio frequency, RF, signal paths. Located between a first RF signal path of the plurality of parallel RF signal paths comprising at least one first RF amplifier and a second signal path comprising at least one second RF amplifier is one of a shared inductor or shared transformer. The at least one first RF amplifier is coupled to a supply voltage via a first switch and at least one second RF amplifier is coupled to the supply voltage via a second switch, and the first switch is closed that provides the supply voltage to the at least one second RF amplifier whilst the second switch is opened.
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公开(公告)号：US20140086360A1
公开(公告)日：2014-03-27
申请号：US14037329
申请日：2013-09-25
Applicant: MEDIATEK INC.
Inventor： Hsiang-Hui Chang , Li-Shin Lai , Chih-Jung Chen , Chih-Hao Sun
IPC: H04B1/04
CPC classification number: H04B1/0475 , H04B1/0483 , H04L27/04
Abstract: A transmitter includes a first channel and a second channel. The first channel includes a first mixer, and is used for processing a first input signal to generate a first output signal; the second channel includes a second mixer, where the second channel does not receive any input signal. When the transmitter is operated under a first mode, both the first mixer and the second mixer receive oscillation signals.
Abstract translation: 发射机包括第一信道和第二信道。 第一通道包括第一混频器，用于处理第一输入信号以产生第一输出信号; 第二通道包括第二混频器，其中第二通道不接收任何输入信号。 当发射机在第一模式下操作时，第一混频器和第二混频器都接收振荡信号。
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公开(公告)号：US10116289B2
公开(公告)日：2018-10-30
申请号：US14738941
申请日：2015-06-15
Applicant: MEDIATEK INC.
Inventor： Chih-Hao Sun
Abstract: A signal processing circuit has a first mixer, a first amplifier, and a pulling effect mitigation circuit. The first mixer mixes a first input signal and a first oscillation signal to generate a first output signal, wherein the first oscillation signal is generated by dividing a frequency of a reference clock with a frequency dividing factor. The first amplifier amplifies the first output signal, and generates an amplified output signal at an output terminal of the first amplifier. The pulling effect mitigation circuit is coupled to the output terminal of the first amplifier, and generates a compensation signal to the output terminal for reducing at least an Nth harmonic of the amplified output signal, wherein a value of N is equal to the frequency dividing factor.
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公开(公告)号：US20150156053A1
公开(公告)日：2015-06-04
申请号：US14619082
申请日：2015-02-11
Applicant: MEDIATEK INC.
Inventor： Chih-Hao Sun , Chi-Yao Yu
IPC: H04L27/36
CPC classification number: H04L27/361 , H04L27/2075
Abstract: A signal modulator includes: a modulating circuit; a first signal trace block arranged to conduct a first in-phase oscillating signal to the modulating circuit, and conduct a first quadrature-phase oscillating signal to the modulating circuit; and a second signal trace block arranged to conduct a second in-phase oscillating signal to the modulating circuit, and conduct a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the first in-phase oscillating signal caused by the first signal trace block substantially equals a phase difference of the second quadrature-phase oscillating signal caused by the second signal trace block, a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the second in-phase oscillating signal caused by the second signal trace block substantially equals a phase difference of the first quadrature-phase oscillating signal caused by the first signal trace block.
Abstract translation: 信号调制器包括：调制电路; 第一信号轨迹块，布置成将第一同相振荡信号传导到调制电路，并且向调制电路传导第一正交振荡信号; 以及第二信号轨迹块，布置成将第二同相振荡信号传导到调制电路，并且向调制电路传导第二正交振荡信号，并且由第二同相振荡信号引起的第一同相振荡信号的相位差 第一信号跟踪块基本上等于由第二信号跟踪块引起的第二正交相位振荡信号的相位差，到调制电路的第二正交相位振荡信号和第二同相振荡信号的相位差引起的 由第二信号跟踪块基本上等于由第一信号跟踪块引起的第一正交相位振荡信号的相位差。
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