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公开(公告)号：US20150303880A1
公开(公告)日：2015-10-22
申请号：US14259120
申请日：2014-04-22
Applicant: MEDIATEK INC.
Inventor： Tzu-Hsuin Peng , Chih-Hong Lou , Chao-Hsin Lu , Chi-Yun Wang , Chih-Jung Chen
CPC classification number: H03F1/26 , H03F3/45475 , H03F3/45479 , H03F3/45932 , H03F2200/129 , H03F2200/267 , H03F2203/45061 , H03F2203/45116 , H03F2203/45138 , H03F2203/45526 , H03H11/0405 , H03H11/1217 , H03H11/1234
Abstract: A low pass filter includes a first amplifier stage and a second amplifier stage. The first amplifier stage includes a differential operational amplifier, wherein the first amplifier stage is arranged to process a differential input signal to generate a differential intermediate signal, the differential input signal having a first input signal and a second input signal, and the differential intermediate signal having a first intermediate signal and a second intermediate signal. The second amplifier stage has no common-mode feedback and is arranged to process the differential intermediate signal to generate a differential output signal, wherein the differential output signal has a first output signal corresponding to the first input signal and a second output signal corresponding to the second input signal. Since the noisy common-mode feedback is removed from the second amplifier stage, the overall common-mode noise of the low pass filter can be decreased.
Abstract translation: 低通滤波器包括第一放大级和第二放大级。 第一放大器级包括差分运算放大器，其中第一放大器级被布置成处理差分输入信号以产生差分中间信号，差分输入信号具有第一输入信号和第二输入信号，以及差分中间信号 具有第一中间信号和第二中间信号。 第二放大器级没有共模反馈，并且被布置成处理差分中间信号以产生差分输出信号，其中差分输出信号具有对应于第一输入信号的第一输出信号和对应于第一输入信号的第二输出信号 第二输入信号。 由于从第二放大器级除去噪声共模反馈，所以可以降低低通滤波器的总体共模噪声。
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2.发明申请TRANSMITTER HAVING INTEGRATED DESIGN OF MULTIPLE WIRELESS COMMUNICATION MODULES 有权具有多个无线通信模块集成设计的发射机公开(公告)号：US20150200693A1
公开(公告)日：2015-07-16
申请号：US14156308
申请日：2014-01-15
Applicant: MEDIATEK INC.
Inventor： Chao-Hsin Lu , Chih-Jung Chen
IPC: H04B1/04
CPC classification number: H04B1/0053
Abstract: A transmitter includes a first wireless communication module, a second wireless communication module, a multiplexer, a digital-to-analog converter and a filter. The multiplexer selectively outputs a first digital signal derived from a digital output of the first wireless communication module or a second digital signal derived from a digital output of the second wireless communication module as a selected output. The digital-to-analog converter converts the selected output into an analog signal. The filter processes the analog signal and includes an adjustable resistive element. When the multiplexer selects the first digital signal as the selected output, the adjustable resistive element is adjusted to have a first resistance value such that the filter has a first bandwidth. When the multiplexer selects the second digital signal as the selected output, the adjustable resistive element is adjusted to have a second resistance value such that the filter has a second bandwidth.
Abstract translation: 发射机包括第一无线通信模块，第二无线通信模块，复用器，数模转换器和滤波器。 复用器选择性地输出从第一无线通信模块的数字输出导出的第一数字信号或从第二无线通信模块的数字输出导出的第二数字信号作为选择的输出。 数模转换器将所选输出转换为模拟信号。 滤波器处理模拟信号并包括可调电阻元件。 当多路复用器选择第一数字信号作为所选择的输出时，可调电阻元件被调整为具有第一电阻值，使得滤波器具有第一带宽。 当多路复用器选择第二数字信号作为所选择的输出时，可调节电阻元件被调整为具有第二电阻值，使得滤波器具有第二带宽。
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公开(公告)号：US11043958B2
公开(公告)日：2021-06-22
申请号：US16990016
申请日：2020-08-11
Applicant: MEDIATEK INC.
Inventor： Chin-Yu Lin , Ying-Zu Lin , Chih-Hou Tsai , Chao-Hsin Lu
Abstract: A time-interleaved noise-shaping successive-approximation analog-to-digital converter (TI NS-SAR ADC) is shown. A first successive-approximation channel has a first set of successive-approximation registers, and a first coarse comparator operative to coarsely adjust the first set of successive-approximation registers. A second successive-approximation channel has a second set of successive-approximation registers, and a second coarse comparator operative to coarsely adjust the second set of successive-approximation registers. A fine comparator is provided to finely adjust the first set of successive-approximation registers and the second set of successive-approximation registers alternately. A noise-shaping circuit is provided to sample residues of the first and second successive-approximation channels for the fine comparator to finely adjust the first and second sets of successive-approximation registers.
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Patent Agency Ranking
公开(公告)号：US09263993B2
公开(公告)日：2016-02-16
申请号：US14259120
申请日：2014-04-22
Applicant: MEDIATEK INC.
Inventor： Tzu-Hsuin Peng , Chih-Hong Lou , Chao-Hsin Lu , Chi-Yun Wang , Chih-Jung Chen
CPC classification number: H03F1/26 , H03F3/45475 , H03F3/45479 , H03F3/45932 , H03F2200/129 , H03F2200/267 , H03F2203/45061 , H03F2203/45116 , H03F2203/45138 , H03F2203/45526 , H03H11/0405 , H03H11/1217 , H03H11/1234
Abstract: A low pass filter includes a first amplifier stage and a second amplifier stage. The first amplifier stage includes a differential operational amplifier, wherein the first amplifier stage is arranged to process a differential input signal to generate a differential intermediate signal, the differential input signal having a first input signal and a second input signal, and the differential intermediate signal having a first intermediate signal and a second intermediate signal. The second amplifier stage has no common-mode feedback and is arranged to process the differential intermediate signal to generate a differential output signal, wherein the differential output signal has a first output signal corresponding to the first input signal and a second output signal corresponding to the second input signal. Since the noisy common-mode feedback is removed from the second amplifier stage, the overall common-mode noise of the low pass filter can be decreased.
Abstract translation: 低通滤波器包括第一放大级和第二放大级。 第一放大器级包括差分运算放大器，其中第一放大器级被布置成处理差分输入信号以产生差分中间信号，差分输入信号具有第一输入信号和第二输入信号，以及差分中间信号 具有第一中间信号和第二中间信号。 第二放大器级没有共模反馈，并且被布置成处理差分中间信号以产生差分输出信号，其中差分输出信号具有对应于第一输入信号的第一输出信号和对应于第一输入信号的第二输出信号 第二输入信号。 由于从第二放大器级除去噪声共模反馈，所以可以降低低通滤波器的总体共模噪声。
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公开(公告)号：US11444634B2
公开(公告)日：2022-09-13
申请号：US17315571
申请日：2021-05-10
Applicant: MEDIATEK INC.
Inventor： Chin-Yu Lin , Ying-Zu Lin , Chih-Hou Tsai , Chao-Hsin Lu
Abstract: A time-interleaved noise-shaping successive-approximation analog-to-digital converter (TI NS-SAR ADC) is shown. A first successive-approximation channel has a first set of successive-approximation registers, and a first coarse comparator operative to coarsely adjust the first set of successive-approximation registers. A second successive-approximation channel has a second set of successive-approximation registers, and a second coarse comparator operative to coarsely adjust the second set of successive-approximation registers. A fine comparator is provided to finely adjust the first set of successive-approximation registers and the second set of successive-approximation registers alternately. A noise-shaping circuit is provided to sample residues of the first and second successive-approximation channels for the fine comparator to finely adjust the first and second sets of successive-approximation registers.
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公开(公告)号：US10177216B2
公开(公告)日：2019-01-08
申请号：US15585139
申请日：2017-05-02
Applicant: MEDIATEK INC.
Inventor： Chih-Hou Tsai , Wei-Hao Tsai , Rong-Sing Chu , Ying-Zu Lin , Chao-Hsin Lu
Abstract: A metal-oxide-metal (MOM) capacitor is provided in the present invention. The MOM capacitor includes a capacitor element, wherein the capacitor element includes a first electrode and a second electrode. A projection of the first electrode includes a closed pattern in the vertical projection direction. A projection of the second electrode is surrounded by the closed pattern of the projection of the first electrode in the vertical projection direction.
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公开(公告)号：US20170352719A1
公开(公告)日：2017-12-07
申请号：US15585139
申请日：2017-05-02
Applicant: MEDIATEK INC.
Inventor： Chih-Hou Tsai , Wei-Hao Tsai , Rong-Sing Chu , Ying-Zu Lin , Chao-Hsin Lu
IPC: H01L49/02
CPC classification number: H01L28/86 , H01G4/012 , H01G4/10 , H01G4/232 , H01G4/306 , H01G4/33 , H01G4/385
Abstract: A metal-oxide-metal (MOM) capacitor is provided in the present invention. The MOM capacitor includes a capacitor element, wherein the capacitor element includes a first electrode and a second electrode. A projection of the first electrode includes a closed pattern in the vertical projection direction. A projection of the second electrode is surrounded by the closed pattern of the projection of the first electrode in the vertical projection direction.
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8.发明授权Transmitter having integrated design of multiple wireless communication modules 有权发射机具有多个无线通信模块的集成设计公开(公告)号：US09172410B2
公开(公告)日：2015-10-27
申请号：US14156308
申请日：2014-01-15
Applicant: MEDIATEK INC.
Inventor： Chao-Hsin Lu , Chih-Jung Chen
CPC classification number: H04B1/0053
Abstract: A transmitter includes a first wireless communication module, a second wireless communication module, a multiplexer, a digital-to-analog converter and a filter. The multiplexer selectively outputs a first digital signal derived from a digital output of the first wireless communication module or a second digital signal derived from a digital output of the second wireless communication module as a selected output. The digital-to-analog converter converts the selected output into an analog signal. The filter processes the analog signal and includes an adjustable resistive element. When the multiplexer selects the first digital signal as the selected output, the adjustable resistive element is adjusted to have a first resistance value such that the filter has a first bandwidth. When the multiplexer selects the second digital signal as the selected output, the adjustable resistive element is adjusted to have a second resistance value such that the filter has a second bandwidth.
Abstract translation: 发射机包括第一无线通信模块，第二无线通信模块，复用器，数模转换器和滤波器。 复用器选择性地输出从第一无线通信模块的数字输出导出的第一数字信号或从第二无线通信模块的数字输出导出的第二数字信号作为选择的输出。 数模转换器将所选输出转换为模拟信号。 滤波器处理模拟信号并包括可调电阻元件。 当多路复用器选择第一数字信号作为所选择的输出时，可调电阻元件被调整为具有第一电阻值，使得滤波器具有第一带宽。 当多路复用器选择第二数字信号作为所选择的输出时，可调节电阻元件被调整为具有第二电阻值，使得滤波器具有第二带宽。
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