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1. 发明申请

US20130309979A1 RADIO-FREQUENCY FRONT-END SUPPORTING MULTIPLE WIRELESS COMMUNICATION STANDARDS 有权
标题翻译：无线电频率前端支持多路无线通信标准
公开(公告)号：US20130309979A1
公开(公告)日：2013-11-21
申请号：US13798063
申请日：2013-03-12
申请人： MEDIATEK INC.
发明人： Chia-Hsin Wu , Chih-Hsien Shen , Jui-Lin Hsu , Chih-Hung Lee , Yi-An Li
IPC分类号： H04B1/16
CPC分类号： H04B1/16 , H04B1/006
摘要： A radio-frequency (RF) front-end supporting at least a first and second wireless communication bands includes a mixer arranged for mixing a received signal with a first local oscillation signal when the shared receiver front-end performs the reception operation according to the first wireless communication band, and for mixing the received signal with a second local oscillation signal when the shared receiver front-end performs the reception operation according to the second wireless communication band, wherein the first and second local oscillation signals are different in frequency.
摘要翻译：支持至少第一和第二无线通信频带的射频（RF）前端包括：当共享接收机前端执行根据第一本地振荡信号的接收操作时，混合器被配置为将接收信号与第一本地振荡信号进行混频无线通信频带，并且当共享接收机前端根据第二无线通信频带进行接收操作时，用于将接收到的信号与第二本地振荡信号进行混频，其中第一和第二本地振荡信号的频率不同。

2. 发明授权

US09385683B2 Diplexer and transceiver thereof 有权
标题翻译：双工器及其收发器
公开(公告)号：US09385683B2
公开(公告)日：2016-07-05
申请号：US14139806
申请日：2013-12-23
申请人： MEDIATEK INC.
发明人： Chih-Hung Lee , Ming-Da Tsai , Jui-Lin Hsu
IPC分类号： H04L5/00 , H03H7/46 , H04B1/00 , H03H7/09
CPC分类号： H03H7/463 , H03H7/09 , H04B1/005
摘要： A diplexer, for coupling a first radio frequency (RF) signal corresponding to a first carrier frequency and a second RF signal corresponding to a second carrier frequency is disclosed. The diplexer includes a first port arranged to couple the first RF signal; a second port arranged to couple the second RF signal; a third port capable of connecting an antenna; a first impedance unit coupled to the first port and the third port; and a second impedance unit coupled to the second port and the third port; wherein the first port, the second port and the third port are coupled to a direct current (DC) ground; wherein the first impedance unit is arranged to provide an first open-circuit impedance against the second RF signal, and the second impedance unit is arranged to provide a second open-circuit impedance against the first RF signal.
摘要翻译：公开了一种用于耦合对应于第一载波频率的第一射频（RF）信号和对应于第二载波频率的第二RF信号的双工器。双工器包括被布置成耦合第一RF信号的第一端口; 布置成耦合第二RF信号的第二端口; 能够连接天线的第三端口; 耦合到所述第一端口和所述第三端口的第一阻抗单元; 以及耦合到所述第二端口和所述第三端口的第二阻抗单元; 其中所述第一端口，所述第二端口和所述第三端口耦合到直流（DC）接地; 其中所述第一阻抗单元布置成针对所述第二RF信号提供第一开路阻抗，并且所述第二阻抗单元布置成针对所述第一RF信号提供第二开路阻抗。

3. 发明授权

US09100083B2 Radio-frequency front-end supporting multiple wireless communication standards 有权
标题翻译：射频前端支持多种无线通信标准
公开(公告)号：US09100083B2
公开(公告)日：2015-08-04
申请号：US13798063
申请日：2013-03-12
申请人： MEDIATEK INC.
发明人： Chia-Hsin Wu , Chih-Hsien Shen , Jui-Lin Hsu , Chih-Hung Lee , Yi-An Li
IPC分类号： H04B1/16 , H04B1/00
CPC分类号： H04B1/16 , H04B1/006
摘要： A radio-frequency (RF) front-end supporting at least a first and second wireless communication bands includes a mixer arranged for mixing a received signal with a first local oscillation signal when the shared receiver front-end performs the reception operation according to the first wireless communication band, and for mixing the received signal with a second local oscillation signal when the shared receiver front-end performs the reception operation according to the second wireless communication band, wherein the first and second local oscillation signals are different in frequency.
摘要翻译：支持至少第一和第二无线通信频带的射频（RF）前端包括：当共享接收机前端执行根据第一本地振荡信号的接收操作时，混合器被配置为将接收信号与第一本地振荡信号进行混频无线通信频带，并且当共享接收机前端根据第二无线通信频带进行接收操作时，用于将接收到的信号与第二本地振荡信号进行混频，其中第一和第二本地振荡信号的频率不同。

4. 发明授权

US08954114B2 Apparatuses and methods for providing multi-standby mode of wireless communications using single subscriber identity card with multiple subscriber numbers 有权
标题翻译：使用具有多个用户号码的单用户识别卡提供无线通信的多待机模式的装置和方法
公开(公告)号：US08954114B2
公开(公告)日：2015-02-10
申请号：US14159883
申请日：2014-01-21
申请人： MediaTek Inc.
发明人： Chih-Hung Lee , Min-Ju Wu , Nai-Hsin Chang , Jen-Chien Liu
IPC分类号： H04B1/38 , H04W60/00 , H04M3/42
CPC分类号： H04M3/42238 , H04B1/3816 , H04M1/274 , H04W8/205 , H04W8/26 , H04W60/005
摘要： A communication device is provided with a processing unit. The processing unit determines whether at least one elementary file in a single subscriber identity card is required to be read out. If so, the processing unit activates one subscriber identity module instance in the subscriber identity card for the elementary file, and reads the elementary file from the subscriber identity card.
摘要翻译：通信设备具有处理单元。处理单元确定是否需要读出单个用户身份证中的至少一个基本文件。如果是这样，处理单元激活用户身份卡中的用户身份模块实例，用于基本文件，并从用户身份卡读取基本文件。

5. 发明授权

US08395452B1 Signal amplification circuits for receiving/transmitting signals according to input signal 有权
标题翻译：用于根据输入信号接收/发送信号的信号放大电路
公开(公告)号：US08395452B1
公开(公告)日：2013-03-12
申请号：US13649119
申请日：2012-10-11
申请人： Mediatek Inc.
发明人： Chih-Hung Lee
IPC分类号： H03F3/68
CPC分类号： H03F1/223 , H03F1/0277 , H03F1/565 , H03F3/189 , H03F3/211 , H03F3/45179 , H03F3/68 , H03F2200/06 , H03F2200/09 , H03F2200/222 , H03F2200/294 , H03F2200/387 , H03F2200/405 , H03F2200/534 , H03F2203/45481
摘要： An exemplary signal amplification circuit includes an input stage, a plurality of output stages and a selecting stage. The input stage has an input node for receiving an input signal and an output node for outputting an intermediate signal. The output stages are coupled to a plurality of output ports of the signal amplification circuit, respectively. Each output stage generates a corresponding processed signal to a corresponding output port according to a gain and the intermediate signal when enabled. The selecting stage selectively couples the output node of the input stage to at least one of the output stages. The signal amplification circuit outputs a first number of processed signal(s) when operated under a first operational mode, and outputs a second number of processed signal(s) when operated under a second operational mode.
摘要翻译：示例性信号放大电路包括输入级，多个输出级和选择级。输入级具有用于接收输入信号的输入节点和用于输出中间信号的输出节点。输出级分别耦合到信号放大电路的多个输出端口。每个输出级根据增益和中断信号在使能时产生相应的处理信号到相应的输出端口。选择级将输入级的输出节点选择性地耦合到至少一个输出级。当在第一操作模式下操作时，信号放大电路输出第一数量的处理信号，并在第二操作模式下操作时输出第二数量的处理信号。

6. 发明授权

US09374697B2 Method of selecting an active SIM for an emergency service and multi-SIM device utilizing the same 有权
标题翻译：选择用于紧急服务的活动SIM和使用该SIM卡的多SIM设备的方法
公开(公告)号：US09374697B2
公开(公告)日：2016-06-21
申请号：US14231972
申请日：2014-04-01
申请人： MediaTek Inc.
发明人： Wei-Feng Shih , Yuh-Hwang You , Ming Lee , Chih-Hung Lee
IPC分类号： H04W4/22 , H04W48/18 , H04W88/06 , H04W76/00
CPC分类号： H04W4/90 , H04W48/18 , H04W76/50 , H04W88/06
摘要： A method of selecting an active SIM for an emergency service and a multi-SIM device utilizing the same are disclosed. The method, adopted by the multi-SIM device, includes: receiving a request for an emergency call on a first SIM camping on an LTE network; determining whether a second SIM camps on a second communications network which supports an emergency service; and when the second communications network supports the emergency service, performing the emergency call from the second SIM.
摘要翻译：公开了一种选择用于紧急服务的活动SIM的方法和利用其的多SIM设备。该多SIM设备采用的方法包括：在LTE网络上驻留的第一SIM上接收紧急呼叫请求; 确定第二SIM卡是否驻留在支持紧急服务的第二通信网络上; 并且当第二通信网络支持紧急服务时，从第二SIM执行紧急呼叫。

7. 发明授权

US09712973B2 Method of selecting a SIM for a location service and multi-SIM device utilizing the same 有权
公开(公告)号：US09712973B2
公开(公告)日：2017-07-18
申请号：US14259498
申请日：2014-04-23
申请人： MediaTek Inc.
发明人： Wei-Feng Shih , Chih-Hung Lee , Ming Lee , Yuh-Hwang You
IPC分类号： H04W4/02 , H04W8/18 , H04W64/00
CPC分类号： H04W4/025 , H04W8/183 , H04W64/00
摘要： A method of selecting a SIM for a location service and a multi-SIM device utilizing the same are disclosed. The method, adopted by a multi-SIM device, includes: acquiring Secure User Plane Location (SUPL) information from a corresponding communications network which each SIM is in connection with; determining which communications network supports a location service based on the SUPL information; and requesting the location service on a SIM that is in connection with the supported communications network.

8. 发明申请

US20140233441A1 Diplexer and Transceiver thereof 有权
标题翻译：双工器及其收发器
公开(公告)号：US20140233441A1
公开(公告)日：2014-08-21
申请号：US14139806
申请日：2013-12-23
申请人： MEDIATEK INC.
发明人： Chih-Hung Lee , Ming-Da Tsai , Jui-Lin Hsu
IPC分类号： H04L5/06
CPC分类号： H03H7/463 , H03H7/09 , H04B1/005
摘要： A diplexer, for coupling a first radio frequency (RF) signal corresponding to a first carrier frequency and a second RF signal corresponding to a second carrier frequency is disclosed. The diplexer includes a first port arranged to couple the first RF signal; a second port arranged to couple the second RF signal; a third port capable of connecting an antenna; a first impedance unit coupled to the first port and the third port; and a second impedance unit coupled to the second port and the third port; wherein the first port, the second port and the third port are coupled to a direct current (DC) ground; wherein the first impedance unit is arranged to provide an first open-circuit impedance against the second RF signal, and the second impedance unit is arranged to provide a second open-circuit impedance against the first RF signal.
摘要翻译：公开了一种用于耦合对应于第一载波频率的第一射频（RF）信号和对应于第二载波频率的第二RF信号的双工器。双工器包括被布置成耦合第一RF信号的第一端口; 布置成耦合第二RF信号的第二端口; 能够连接天线的第三端口; 耦合到所述第一端口和所述第三端口的第一阻抗单元; 以及耦合到所述第二端口和所述第三端口的第二阻抗单元; 其中所述第一端口，所述第二端口和所述第三端口耦合到直流（DC）接地; 其中所述第一阻抗单元布置成针对所述第二RF信号提供第一开路阻抗，并且所述第二阻抗单元布置成针对所述第一RF信号提供第二开路阻抗。

9. 发明申请

US20130043955A1 SIGNAL AMPLIFICATION CIRCUITS FOR RECEIVING/TRANSMITTING SIGNALS ACCORDING TO INPUT SIGNAL 有权
标题翻译：用于根据输入信号接收/发送信号的信号放大电路
公开(公告)号：US20130043955A1
公开(公告)日：2013-02-21
申请号：US13649119
申请日：2012-10-11
申请人： MEDIATEK INC.
发明人： Chih-Hung Lee
IPC分类号： H03F3/04
CPC分类号： H03F1/223 , H03F1/0277 , H03F1/565 , H03F3/189 , H03F3/211 , H03F3/45179 , H03F3/68 , H03F2200/06 , H03F2200/09 , H03F2200/222 , H03F2200/294 , H03F2200/387 , H03F2200/405 , H03F2200/534 , H03F2203/45481
摘要： An exemplary signal amplification circuit includes an input stage, a plurality of output stages and a selecting stage. The input stage has an input node for receiving an input signal and an output node for outputting an intermediate signal. The output stages are coupled to a plurality of output ports of the signal amplification circuit, respectively. Each output stage generates a corresponding processed signal to a corresponding output port according to a gain and the intermediate signal when enabled. The selecting stage selectively couples the output node of the input stage to at least one of the output stages. The signal amplification circuit outputs a first number of processed signal(s) when operated under a first operational mode, and outputs a second number of processed signal(s) when operated under a second operational mode.
摘要翻译：示例性信号放大电路包括输入级，多个输出级和选择级。输入级具有用于接收输入信号的输入节点和用于输出中间信号的输出节点。输出级分别耦合到信号放大电路的多个输出端口。每个输出级根据增益和中断信号在使能时产生相应的处理信号到相应的输出端口。选择级将输入级的输出节点选择性地耦合到至少一个输出级。当在第一操作模式下操作时，信号放大电路输出第一数量的处理信号，并在第二操作模式下操作时输出第二数量的处理信号。

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