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1.发明申请公开(公告)号：US20170117870A1
公开(公告)日：2017-04-27
申请号：US15201501
申请日：2016-07-03
申请人： MEDIATEK INC.
发明人： Chien-Cheng Lin
CPC分类号： H03H7/38 , H03F1/0277 , H03F1/565 , H03F3/19 , H03F3/245 , H03F3/72 , H03F2200/06 , H03F2200/222 , H03F2200/294 , H03F2200/429 , H03F2200/507 , H03F2203/7209 , H03F2203/7227 , H03H2210/025 , H04B1/0458
摘要： A matching network circuit and an associated apparatus are provided. The matching network circuit includes a matching unit coupled between a common path port and a first path port of the matching network circuit, and an impedance unit coupled between the common path port and a second path port of the matching network circuit. The common path port is utilized for connecting the matching network circuit to a common path, the first path port is utilized for connecting the matching network circuit to a first device on a first path, and the second path port is utilized for connecting the matching network circuit to a second device on a second path. The matching unit is arranged for performing impedance matching between the common path port and the first path port, and the impedance unit is arranged for performing impedance matching between the common path port and the second path port.
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公开(公告)号：US10050603B2
公开(公告)日：2018-08-14
申请号：US15242619
申请日：2016-08-22
申请人： MEDIATEK INC.
发明人： Chien-Cheng Lin , Jui-Chih Kao
摘要： A frequency tunable filter and an associated apparatus are provided, where the frequency tunable filter may include a plurality of ports including an input port and an output port, and may further include an inductor-capacitor (LC) resonator, a switching unit that is coupled between the LC resonator and a ground terminal of the frequency tunable filter, and a resonance adjustment unit that is coupled between the LC resonator and the ground terminal. For example, the LC resonator may include a first terminal coupled to each of the input port and the output port, and may further include a second terminal, the switching unit may selectively provide a conduction path between the second terminal of the LC resonator and the ground terminal, and the resonance adjustment unit may selectively change a resonance characteristic of the LC resonator.
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公开(公告)号：US20180069742A1
公开(公告)日：2018-03-08
申请号：US15647275
申请日：2017-07-12
申请人： MEDIATEK INC.
发明人： Chien-Cheng Lin , Ming-Da Tsai
CPC分类号： H04L27/366 , H03C3/08 , H03D7/166 , H03F1/14 , H03F1/3205 , H03F1/3211 , H03F1/3264 , H03F3/21 , H03F3/45179 , H03F3/45183 , H03F2200/21 , H03F2200/213 , H03F2200/228 , H03F2200/249 , H03F2200/471 , H03F2200/489 , H03F2200/492 , H03F2200/534 , H03F2200/75 , H03F2201/3218 , H03F2203/45036 , H03F2203/45101 , H03F2203/45112 , H03F2203/45134 , H03F2203/45136 , H03F2203/45138 , H03F2203/45146 , H03F2203/45151 , H03F2203/45156 , H03F2203/45168 , H03F2203/45172 , H03F2203/45208 , H03F2203/45256 , H03F2203/45292 , H03F2203/45312 , H03F2203/45356 , H03F2203/45374 , H03F2203/45386 , H03F2203/45402 , H03F2203/45436 , H03F2203/45544 , H03F2203/45596 , H03F2203/45622 , H04B2001/0408
摘要： A compensation circuit of a power amplifier includes a varactor, a voltage sensor and a control circuit. The varactor is coupled to an input terminal of the power amplifier. The voltage sensor is arranged for detecting an amplitude of an input signal of the power amplifier to generate a detecting result. The control circuit is coupled to the varactor and the voltage sensor, and is arranged for controlling a bias voltage of the varactor to adjust a capacitance of the varactor according to the detecting result.
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公开(公告)号：US09100079B2
公开(公告)日：2015-08-04
申请号：US14144593
申请日：2013-12-31
申请人： MEDIATEK INC.
CPC分类号： H04B1/10 , H03F1/34 , H03F3/24 , H04B1/401 , H04B2001/0433
摘要： A transceiver includes: a first transforming network arranged for using a first input impedance to receive a first modulated signal and using a first output impedance to output a first transformed signal during a transmitting mode of a first communication standard, and for using the first input impedance to receive a second modulated signal and using a second output impedance to output a second transformed signal during the transmitting mode of a second communication standard; a second transforming network arranged for using a second input impedance to receive the second transformed signal and using a third output impedance to output a first RF signal to a connecting port of the transceiver during the transmitting mode of the second communication standard; a power amplifier, arranged to generate a second RF signal; and a switching circuit for selectively coupling the second transformed signal to the second transforming network.
摘要翻译： 收发器包括：第一变换网络，被布置成使用第一输入阻抗来接收第一调制信号，并且使用第一输出阻抗在第一通信标准的发送模式期间输出第一变换信号，并且使用第一输入阻抗 接收第二调制信号并使用第二输出阻抗在第二通信标准的发送模式期间输出第二变换信号; 布置成在第二通信标准的发送模式期间使用第二输入阻抗来接收第二变换信号并使用第三输出阻抗将第一RF信号输出到收发器的连接端口的第二变换网络; 功率放大器，被布置成产生第二RF信号; 以及用于选择性地将第二变换信号耦合到第二变换网络的开关电路。
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公开(公告)号：US20140295774A1
公开(公告)日：2014-10-02
申请号：US14144593
申请日：2013-12-31
申请人： MEDIATEK INC.
IPC分类号： H04B1/40
CPC分类号： H04B1/10 , H03F1/34 , H03F3/24 , H04B1/401 , H04B2001/0433
摘要： A transceiver includes: a first transforming network arranged for using a first input impedance to receive a first modulated signal and using a first output impedance to output a first transformed signal during a transmitting mode of a first communication standard, and for using the first input impedance to receive a second modulated signal and using a second output impedance to output a second transformed signal during the transmitting mode of a second communication standard; a second transforming network arranged for using a second input impedance to receive the second transformed signal and using a third output impedance to output a first RF signal to a connecting port of the transceiver during the transmitting mode of the second communication standard; a power amplifier, arranged to generate a second RF signal; and a switching circuit for selectively coupling the second transformed signal to the second transforming network.
摘要翻译： 收发器包括：第一变换网络，被布置成使用第一输入阻抗来接收第一调制信号，并且使用第一输出阻抗在第一通信标准的发送模式期间输出第一变换信号，并且使用第一输入阻抗 接收第二调制信号并使用第二输出阻抗在第二通信标准的发送模式期间输出第二变换信号; 布置成在第二通信标准的发送模式期间使用第二输入阻抗来接收第二变换信号并使用第三输出阻抗将第一RF信号输出到收发器的连接端口的第二变换网络; 功率放大器，被布置成产生第二RF信号; 以及用于选择性地将第二变换信号耦合到第二变换网络的开关电路。
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公开(公告)号：US20170294878A1
公开(公告)日：2017-10-12
申请号：US15462923
申请日：2017-03-20
申请人： MEDIATEK INC.
发明人： Chien-Wei Tseng , Ian Tseng , Ming-Da Tsai , Yangjian Chen , Chien-Cheng Lin
IPC分类号： H03D7/12
CPC分类号： H03D7/12 , H03D7/165 , H03D2200/0082
摘要： A harmonic-rejection mixer apparatus includes a mixing circuit and a combining circuit. The mixing circuit receives mixes an input signal and a first local oscillator (LO) signal to generate a first output signal, and mixes the same input signal and a second LO signal to generate a second output signal, wherein the first LO signal and the second LO signal have a same frequency but different phases. The combining circuit combines the first output signal and the second output signal, wherein harmonic rejection is at least achieved by combination of the first output signal and the second output signal.
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7.发明申请公开(公告)号：US20170126205A1
公开(公告)日：2017-05-04
申请号：US15242619
申请日：2016-08-22
申请人： MEDIATEK INC.
发明人： Chien-Cheng Lin , Jui-Chih Kao
IPC分类号： H03H11/04
CPC分类号： H03H11/04 , H03H7/0115 , H03H7/0153 , H03H7/1758 , H03H2007/013 , H03H2210/025 , H03H2210/026
摘要： A frequency tunable filter and an associated apparatus are provided, where the frequency tunable filter may include a plurality of ports including an input port and an output port, and may further include an inductor-capacitor (LC) resonator, a switching unit that is coupled between the LC resonator and a ground terminal of the frequency tunable filter, and a resonance adjustment unit that is coupled between the LC resonator and the ground terminal. For example, the LC resonator may include a first terminal coupled to each of the input port and the output port, and may further include a second terminal, the switching unit may selectively provide a conduction path between the second terminal of the LC resonator and the ground terminal, and the resonance adjustment unit may selectively change a resonance characteristic of the LC resonator.
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公开(公告)号：US09246535B2
公开(公告)日：2016-01-26
申请号：US14683109
申请日：2015-04-09
申请人： MEDIATEK INC.
CPC分类号： H04B1/44 , H03F1/0205 , H03F3/19 , H03F3/245 , H03F2200/222 , H03F2200/294 , H04B1/0458 , H04B1/18
摘要： The present invention discloses a transmit-receive (TR) front end. The TR front end comprises a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled to the transformer at a first end and coupled to the LNA at a second end, wherein the second end is capable of being coupled to an antenna; wherein the LNA is single ended and there is no transformer between the LNA and the TR switch.
摘要翻译： 本发明公开了一种发射 - 接收（TR）前端。 TR前端包括低噪声放大器（LNA）; 功率放大器（PA）; 耦合到PA的变压器，用于增加PA的电压摆幅和电力传输; 以及TR开关，其在第一端处耦合到所述变压器，并且在第二端处耦合到所述LNA，其中所述第二端能够耦合到天线; 其中LNA是单端的，并且LNA和TR开关之间没有变压器。
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公开(公告)号：US20150222318A1
公开(公告)日：2015-08-06
申请号：US14683109
申请日：2015-04-09
申请人： MEDIATEK INC.
CPC分类号： H04B1/44 , H03F1/0205 , H03F3/19 , H03F3/245 , H03F2200/222 , H03F2200/294 , H04B1/0458 , H04B1/18
摘要： The present invention discloses a transmit-receive (TR) front end. The TR front end comprises a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled to the transformer at a first end and coupled to the LNA at a second end, wherein the second end is capable of being coupled to an antenna; wherein the LNA is single ended and there is no transformer between the LNA and the TR switch.
摘要翻译： 本发明公开了一种发射 - 接收（TR）前端。 TR前端包括低噪声放大器（LNA）; 功率放大器（PA）; 耦合到PA的变压器，用于增加PA的电压摆幅和电力传输; 以及TR开关，其在第一端处耦合到所述变压器，并且在第二端处耦合到所述LNA，其中所述第二端能够耦合到天线; 其中LNA是单端的，并且LNA和TR开关之间没有变压器。
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公开(公告)号：US10382004B2
公开(公告)日：2019-08-13
申请号：US15201501
申请日：2016-07-03
申请人： MEDIATEK INC.
发明人： Chien-Cheng Lin
摘要： A matching network circuit and an associated apparatus are provided. The matching network circuit includes a matching unit coupled between a common path port and a first path port of the matching network circuit, and an impedance unit coupled between the common path port and a second path port of the matching network circuit. The common path port is utilized for connecting the matching network circuit to a common path, the first path port is utilized for connecting the matching network circuit to a first device on a first path, and the second path port is utilized for connecting the matching network circuit to a second device on a second path. The matching unit is arranged for performing impedance matching between the common path port and the first path port, and the impedance unit is arranged for performing impedance matching between the common path port and the second path port.
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