公开(公告)号：US20160322957A1

公开(公告)日：2016-11-03

申请号：US14821885

申请日：2015-08-10

Applicant: MEDIATEK Inc.

Inventor： Yuan-Hung Chung ,  Ming-Yeh Hsu

IPC: H03H11/04

CPC classification number: H03H11/0461 ,  H03F3/45273 ,  H03F2200/91 ,  H03H11/0405 ,  H03H11/0416 ,  H03H11/0466 ,  H03H11/1213 ,  H03H2011/0411

Abstract: A frequency selective circuit includes a first transistor, an impedance element, a first capacitive element, a second capacitive element, a second capacitive and a second transistor. The first transistor includes a first terminal, a second terminal and a control terminal. The impedance element is coupled between the first terminal and the control terminal of the first transistor. The first capacitive element is coupled to the first terminal of the first transistor. The second capacitive element is coupled to the control terminal of the first transistor. The second transistor includes a first terminal, a second terminal and a control terminal, wherein the control terminal of the second transistor is coupled to the control terminal of the first transistor.

Abstract translation: 频率选择电路包括第一晶体管，阻抗元件，第一电容元件，第二电容元件，第二电容和第二晶体管。 第一晶体管包括第一端子，第二端子和控制端子。 阻抗元件耦合在第一晶体管的第一端子和控制端子之间。 第一电容元件耦合到第一晶体管的第一端。 第二电容元件耦合到第一晶体管的控制端。 第二晶体管包括第一端子，第二端子和控制端子，其中第二晶体管的控制端子耦合到第一晶体管的控制端子。

公开(公告)号：US20150244401A1

公开(公告)日：2015-08-27

申请号：US14617938

申请日：2015-02-10

Applicant: Mediatek Inc.

Inventor： Yuan-Hung Chung ,  Meng-Hsiung Hung ,  Chun-Wei Lin ,  Wei-Kai Hong ,  Keng Leong Fong ,  George Chien ,  Ming-Yeh Hsu

IPC: H04B1/02 ,  H04W4/00 ,  H03F1/02 ,  H03F3/189 ,  H03F3/20

CPC classification number: H04W4/80 ,  H03F1/565 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/09 ,  H03F2200/222 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2200/541 ,  H04B1/0458 ,  H04B2001/0408 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/26 ,  Y02D70/40

Abstract: A transmitting device includes a transmitting chain, a configurable power amplifier device and an impedance tuning circuit. The transmitting chain is arranged to generate a radio frequency signal. The configurable power amplifier device is arranged to support at least a first power amplifier configuration and a second power amplifier configuration, wherein the configurable power amplifier device employs the first power amplifier configuration to receive and amplify the radio frequency signal when the transmitting device is operated in a first operation mode, and employs the second power amplifier configuration to receive and amplify the radio frequency signal when the transmitting device is operated in a second operation mode. The impedance tuning circuit is arranged to adjust an output impedance of the configurable power amplifier device employing the second power amplifier configuration when the transmitting device is operated in the second operation mode.

Abstract translation: 发送装置包括发送链，可配置功率放大器装置和阻抗调谐电路。 发射链被设置成产生射频信号。 配置的功率放大器装置被布置成支持至少第一功率放大器配置和第二功率放大器配置，其中可配置功率放大器设备采用第一功率放大器配置来在发射设备操作时接收和放大射频信号 第一操作模式，并且当发送装置在第二操作模式下操作时采用第二功率放大器配置来接收和放大射频信号。 阻抗调谐电路被布置为当发射装置在第二操作模式下操作时，调整采用第二功率放大器配置的可配置功率放大器装置的输出阻抗。

公开(公告)号：US09503052B1

公开(公告)日：2016-11-22

申请号：US14821885

申请日：2015-08-10

Applicant: MEDIATEK INC.

Inventor： Yuan-Hung Chung ,  Ming-Yeh Hsu

IPC: H03K5/00 ,  H03H11/04

CPC classification number: H03H11/0461 ,  H03F3/45273 ,  H03F2200/91 ,  H03H11/0405 ,  H03H11/0416 ,  H03H11/0466 ,  H03H11/1213 ,  H03H2011/0411

Abstract: A frequency selective circuit includes a first transistor, an impedance element, a first capacitive element, a second capacitive element, a second capacitive and a second transistor. The first transistor includes a first terminal, a second terminal and a control terminal. The impedance element is coupled between the first terminal and the control terminal of the first transistor. The first capacitive element is coupled to the first terminal of the first transistor. The second capacitive element is coupled to the control terminal of the first transistor. The second transistor includes a first terminal, a second terminal and a control terminal, wherein the control terminal of the second transistor is coupled to the control terminal of the first transistor.

Abstract translation: 频率选择电路包括第一晶体管，阻抗元件，第一电容元件，第二电容元件，第二电容和第二晶体管。 第一晶体管包括第一端子，第二端子和控制端子。 阻抗元件耦合在第一晶体管的第一端子和控制端子之间。 第一电容元件耦合到第一晶体管的第一端。 第二电容元件耦合到第一晶体管的控制端。 第二晶体管包括第一端子，第二端子和控制端子，其中第二晶体管的控制端子耦合到第一晶体管的控制端子。