公开(公告)号：US11799511B2

公开(公告)日：2023-10-24

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 ,  H04B1/04

CPC classification number: 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.

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

IPC: H04B1/44 ,  H04B1/04

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.

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.

公开(公告)号：US20240345147A1

公开(公告)日：2024-10-17

申请号：US18419580

申请日：2024-01-23

Applicant: MEDIATEK INC.

Inventor： Wei-Chia Chan ,  Hui-Hsien Liu

IPC: G01R27/26

CPC classification number: G01R27/26

Abstract: A detection circuit and a method for detecting a change in an output impedance of a transmitting circuit are provided. The detection circuit includes at least one transmitted signal strength indicator (TSSI) circuit and a controller, wherein the controller is coupled to the at least one TSSI circuit. The at least one TSSI circuit is configured to generate a first TSSI result of the transmitting circuit according to a first phase shift and generate a second TSSI result of the transmitting circuit according to a second phase shift. The controller is configured to determine whether the change in the output impedance of the transmitting circuit is detected or not according to the first TSSI result and the second TSSI result.

公开(公告)号：US20210203373A1

公开(公告)日：2021-07-01

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

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. 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.

公开(公告)号：US09100079B2

公开(公告)日：2015-08-04

申请号：US14144593

申请日：2013-12-31

Applicant: MEDIATEK INC.

Inventor： Chia-Hsin Wu ,  Hui-Hsien Liu ,  Chien-Cheng Lin ,  Albert Chia-Wen Jerng ,  George Chien

IPC: H04B1/40 ,  H04B1/10 ,  H04B1/401 ,  H04B1/04

CPC classification number: H04B1/10 ,  H03F1/34 ,  H03F3/24 ,  H04B1/401 ,  H04B2001/0433

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140295774A1

公开(公告)日：2014-10-02

申请号：US14144593

申请日：2013-12-31

Applicant: MEDIATEK INC.

Inventor： Chia-Hsin Wu ,  Hui-Hsien Liu ,  Chien-Cheng Lin ,  Albert Chia-Wen Jerng ,  George Chien

IPC: H04B1/40

CPC classification number: H04B1/10 ,  H03F1/34 ,  H03F3/24 ,  H04B1/401 ,  H04B2001/0433

Abstract: 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.

Abstract translation: 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。