公开(公告)号：US20130309979A1

公开(公告)日：2013-11-21

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

IPC: H04B1/16

CPC classification number: H04B1/16 ,  H04B1/006

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。

公开(公告)号：US09590676B2

公开(公告)日：2017-03-07

申请号：US14664922

申请日：2015-03-23

Applicant: MEDIATEK INC.

Inventor： Chia-Hsin Wu ,  Yi-An Li

IPC: H04B1/10 ,  H04B1/18

CPC classification number: H04B1/18

Abstract: A signal receiving apparatus includes: a first amplifying device, a second amplifying device, a feedback device, and a mixing device, wherein the mixing device is a passive mixer, the second amplifying device is arranged to provide an input impedance looking into an input terminal of the second amplifying device to fall within a first impedance range when the second amplifying device operates in a first frequency range, the second amplifying device is arranged to provide the input impedance looking into the input terminal of the second amplifying device to fall within a second impedance range when the second amplifying device operates in a second frequency range, the second frequency range is different from the first frequency range, and the second impedance range is different from the first impedance range.

Abstract translation: 信号接收装置包括：第一放大装置，第二放大装置，反馈装置和混合装置，其中所述混合装置是无源混频器，所述第二放大装置被布置成提供输入端子的输入阻抗 所述第二放大装置在所述第二放大装置在第一频率范围内工作时落入第一阻抗范围内，所述第二放大装置被布置成提供所述第二放大装置的输入端子中的输入阻抗落入第二放大装置的第二阻抗范围内 所述第二放大装置在第二频率范围内工作时，所述第二频率范围与所述第一频率范围不同，所述第二阻抗范围与所述第一阻抗范围不同。

公开(公告)号：US20160142082A1

公开(公告)日：2016-05-19

申请号：US14664922

申请日：2015-03-23

Applicant: MEDIATEK INC.

Inventor： Chia-Hsin Wu ,  Yi-An Li

IPC: H04B1/10 ,  H03D7/14

CPC classification number: H04B1/18

Abstract: A signal receiving apparatus includes: a first amplifying device, a second amplifying device, a feedback device, and a mixing device, wherein the mixing device is a passive mixer, the second amplifying device is arranged to provide an input impedance looking into an input terminal of the second amplifying device to fall within a first impedance range when the second amplifying device operates in a first frequency range, the second amplifying device is arranged to provide the input impedance looking into the input terminal of the second amplifying device to fall within a second impedance range when the second amplifying device operates in a second frequency range, the second frequency range is different from the first frequency range, and the second impedance range is different from the first impedance range.

Abstract translation: 信号接收装置包括：第一放大装置，第二放大装置，反馈装置和混合装置，其中所述混合装置是无源混频器，所述第二放大装置被布置成提供输入端子的输入阻抗 所述第二放大装置在所述第二放大装置在第一频率范围内工作时落入第一阻抗范围内，所述第二放大装置被布置成提供所述第二放大装置的输入端子中的输入阻抗落入第二放大装置的第二阻抗范围内 所述第二放大装置在第二频率范围内工作时，所述第二频率范围与所述第一频率范围不同，所述第二阻抗范围与所述第一阻抗范围不同。

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

IPC: H04B1/16 ,  H04B1/00

CPC classification number: H04B1/16 ,  H04B1/006

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。