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1.发明公开公开(公告)号：US20230179240A1
公开(公告)日：2023-06-08
申请号：US18104761
申请日：2023-02-01
Applicant: MEDIATEK INC.
Inventor： Jui-Lin Hsu , Hsiang-Yun Chu , Yen-Tso Chen , Jen-Hao Cheng , Wei-Hsiu Hsu , Tzu-Chin Lin , Chih-Ming Hung , Jing-Hong Conan Zhan
IPC: H04B1/04 , H01P5/10 , H03H7/42 , H04B1/30 , H04B1/3805
CPC classification number: H04B1/0483 , H01P5/10 , H03H7/42 , H04B1/30 , H04B1/3805 , H04B2001/307
Abstract: A semiconductor chip includes a first wireless communication circuit, a second wireless communication circuit, and an auxiliary path. The first wireless communication circuit includes a signal path, wherein the signal path includes a signal node. The second wireless communication circuit includes a mixer and a local oscillator (LO) buffer. The LO buffer is arranged to receive and buffer an LO signal, and is further arranged to provide the LO signal to the mixer. The auxiliary path is arranged to electrically connect the LO buffer to the signal node of the signal path, wherein the LO buffer is reused for a loop-back test function of the first wireless communication circuit through the auxiliary path.
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公开(公告)号：US11424783B2
公开(公告)日：2022-08-23
申请号：US17129823
申请日：2020-12-21
Applicant: MEDIATEK INC.
Inventor： Wei-Chia Chan , Tse-Yu Chen , Hui-Hsien Liu , Jui-Lin Hsu , Chun-Wei Lin
Abstract: A transceiver includes a radio-frequency (RF) front-end circuit, a dedicated RF front-end circuit, and a switchable matching circuit. The RF front-end circuit deals with communications of at least a first wireless communication standard. The dedicated RF front-end circuit deals with communications of a second wireless communication standard only. The switchable matching circuit is coupled to the RF front-end circuit, the dedicated RF front-end circuit, and a signal port of a chip. The switchable matching circuit provides impedance matching between the signal port and the RF front-end circuit when the RF front-end circuit is in operation, and provides impedance matching between the signal port and the dedicated RF front-end circuit when the dedicated RF front-end circuit is in operation. The RF front-end circuit, the dedicated RF front-end circuit, and the switchable matching circuit are integrated in the chip.
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公开(公告)号：US09385683B2
公开(公告)日：2016-07-05
申请号：US14139806
申请日：2013-12-23
Applicant: MEDIATEK INC.
Inventor： Chih-Hung Lee , Ming-Da Tsai , Jui-Lin Hsu
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US11601147B2
公开(公告)日：2023-03-07
申请号：US17504491
申请日：2021-10-18
Applicant: MEDIATEK INC.
Inventor： Jui-Lin Hsu , Hsiang-Yun Chu , Yen-Tso Chen , Jen-Hao Cheng , Wei-Hsiu Hsu , Tzu-Chin Lin , Chih-Ming Hung , Jing-Hong Conan Zhan
IPC: H04B1/04 , H01P5/10 , H03H7/42 , H04B1/30 , H04B1/3805
Abstract: A semiconductor chip includes a first wireless communication circuit, a local oscillator (LO) buffer, and an auxiliary path. The first wireless communication circuit has a signal path, wherein the signal path has a mixer input port and a signal node distinct from the mixer input port. The auxiliary path is used to electrically connect the LO buffer to the signal node of the signal path. The LO buffer is reused for a loop-back test function through the auxiliary path.
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公开(公告)号：US20220140848A1
公开(公告)日：2022-05-05
申请号：US17504491
申请日：2021-10-18
Applicant: MEDIATEK INC.
Inventor： Jui-Lin Hsu , Hsiang-Yun Chu , Yen-Tso Chen , Jen-Hao Cheng , Wei-Hsiu Hsu , Tzu-Chin Lin , Chih-Ming Hung , Jing-Hong Conan Zhan
IPC: H04B1/04 , H04B1/30 , H04B1/3805 , H01P5/10 , H03H7/42
Abstract: A semiconductor chip includes a first wireless communication circuit, a local oscillator (LO) buffer, and an auxiliary path. The first wireless communication circuit has a signal path, wherein the signal path has a mixer input port and a signal node distinct from the mixer input port. The auxiliary path is used to electrically connect the LO buffer to the signal node of the signal path. The LO buffer is reused for a loop-back test function through the auxiliary path.
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Patent Agency Ranking
公开(公告)号：US20190207640A1
公开(公告)日：2019-07-04
申请号：US16152391
申请日：2018-10-04
Applicant: MEDIATEK INC.
Inventor： Jui-Lin Hsu , Chao-Ching Hung , Tzu-Chin Lin , Wei-Hsiu Hsu , Yu-Li Hsueh , Jing-Hong Conan Zhan , Chih-Ming Hung
CPC classification number: H04B1/403 , G01S7/03 , G01S7/032 , H03B5/12 , H03B2200/008 , H03K5/135 , H04B7/2662
Abstract: A wireless system includes an active oscillator and a front-end circuit. The active oscillator is used to generate and output a reference clock. The active oscillator includes at least one active component, and does not include an electromechanical resonator. The front-end circuit is used to process a transmit (TX) signal or a receive (RX) signal according to a local oscillator (LO) signal. The LO signal is derived from the reference clock.
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7.发明授权公开(公告)号：US09100083B2
公开(公告)日：2015-08-04
申请号：US13798063
申请日：2013-03-12
Applicant: MEDIATEK INC.
Inventor： Chia-Hsin Wu , Chih-Hsien Shen , Jui-Lin Hsu , Chih-Hung Lee , Yi-An Li
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US11695439B2
公开(公告)日：2023-07-04
申请号：US17505605
申请日：2021-10-19
Applicant: MEDIATEK INC.
Inventor： Jui-Lin Hsu , Yen-Tso Chen , Hsiang-Yun Chu , Jen-Hao Cheng , Wei-Hsiu Hsu , Tzu-Chin Lin , Chih-Ming Hung , Jing-Hong Conan Zhan
Abstract: A semiconductor chip includes a first wireless communication circuit, a local oscillator (LO) buffer, and an auxiliary path. The first wireless communication circuit has a signal path, wherein the signal path has a mixer input port and a signal node distinct from the mixer input port. The auxiliary path is used to electrically connect the LO buffer to the signal node of the signal path. The LO buffer is reused for a transmit (TX) function through the auxiliary path.
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公开(公告)号：US11677433B2
公开(公告)日：2023-06-13
申请号：US16152391
申请日：2018-10-04
Applicant: MEDIATEK INC.
Inventor： Jui-Lin Hsu , Chao-Ching Hung , Tzu-Chin Lin , Wei-Hsiu Hsu , Yu-Li Hsueh , Jing-Hong Conan Zhan , Chih-Ming Hung
CPC classification number: H04B1/403 , G01S7/03 , G01S7/032 , H03B5/12 , H03K5/135 , H04B7/2662 , H03B2200/008
Abstract: A wireless system includes an active oscillator and a front-end circuit. The active oscillator is used to generate and output a reference clock. The active oscillator includes at least one active component, and does not include an electromechanical resonator. The front-end circuit is used to process a transmit (TX) signal or a receive (RX) signal according to a local oscillator (LO) signal. The LO signal is derived from the reference clock.
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公开(公告)号：US20220385330A1
公开(公告)日：2022-12-01
申请号：US17864388
申请日：2022-07-13
Applicant: MEDIATEK INC.
Inventor： Wei-Chia Chan , Tse-Yu Chen , Hui-Hsien Liu , Jui-Lin Hsu , Chun-Wei Lin
IPC: H04B1/44
Abstract: A transceiver includes: a radio-frequency (RF) front-end circuit; a dedicated RF front-end circuit; and a switchable matching circuit, integrated in a chip. The RF front-end circuit deals with communications of a first wireless standard, and the dedicated RF front-end circuit deals with communications of a second wireless standard. The switchable matching circuit provides impedance matching between the signal port and the RF front-end circuit when the RF front-end circuit is in operation, and provides impedance matching between the signal port and the dedicated RF front-end circuit when the dedicated RF front-end circuit is in operation, and includes: a first capacitive circuit coupled to the signal port; a first switch circuit coupled between the first capacitive circuit and the dedicated RF front-end circuit; a second capacitive circuit coupled to the dedicated RF front-end circuit; and a second switch circuit coupled to a second terminal of the second capacitive circuit.
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