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    RADIO FREQUENCY FRONT-END CIRCUIT OF WIRELESS COMMUNICATION DEVICE
    1.
    发明公开
    RADIO FREQUENCY FRONT-END CIRCUIT OF WIRELESS COMMUNICATION DEVICE 审中-公开

    公开(公告)号：US20240243769A1

    公开(公告)日：2024-07-18

    申请号：US18404766

    申请日：2024-01-04

    Applicant: MediaTek Inc.

    Inventor： Tsung-Ming Chen ,  Wei-Kai Hong ,  Ting-Wei Liang ,  Wei-Pang Chao ,  Po-Yu Chang

    IPC: H04B1/38 ,  H04B1/00

    CPC classification number: H04B1/38 ,  H04B1/0096

    Abstract: A radio frequency (RF) front-end circuit of a wireless communication device is provided. The RF front-end circuit includes a receiving amplifier, a down-converter, an up-converter, a transmitting amplifier and an output driver, where the receiving amplifier and the down-converter are configured to process received signals according to a local oscillation (LO) signal, and the up-converter, the transmitting amplifier and the output driver are configured to process transmitted signals according to the LO signal. The receiving amplifier, the up-converter or the transmitting amplifier includes a transformer load. The transformer load includes a switchable inductor. When the wireless communication device operates in a first mode, the LO signal has a first frequency, and the switchable inductor has a first inductance. When the wireless communication device operates in a second mode, the LO signal has a second frequency, and the switchable inductor has a second inductance.

    TRANSMITTING DEVICE AND ASSOCIATED TRANSMITTING METHOD FOR POWER EFFICIENCY ENHANCEMENT
    5.
    发明申请
    TRANSMITTING DEVICE AND ASSOCIATED TRANSMITTING METHOD FOR POWER EFFICIENCY ENHANCEMENT 审中-公开
    发送设备和相关的发送功率效率提升方法

    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。

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