RADIO COMMUNICATION CIRCUIT WITH RADIO FREQUENCY QUADRATURE GENERATION

    公开(公告)号:US20220407544A1

    公开(公告)日:2022-12-22

    申请号:US17353840

    申请日:2021-06-22

    Abstract: Radio communication circuits, radio transmitters, and methods are provided in this disclosure. The radio communication circuit may include a modulator configured to provide a first modulated signal including a carrier signal at a carrier frequency, and a second modulated signal including the carrier signal at the carrier frequency. The radio communication circuit may further include a phase shift generator configured to receive a first signal based on the first modulated signal and a second signal based on the second modulated signal. The phase shift generator of the radio communication circuit may further be configured to provide a predefined phase difference between the first signal and the second signal.

    AMPLIFIER CIRCUIT WITH A CURRENT SOURCE

    公开(公告)号:US20220416733A1

    公开(公告)日:2022-12-29

    申请号:US17355203

    申请日:2021-06-23

    Inventor: Chuanzhao YU

    Abstract: Amplifier circuits, radio communication circuits, radio communication devices, and methods provided in this disclosure. The amplifier circuit may include an amplifier configured to amplify an input signal to provide an output signal. The output signal of the amplifier may include a direct current (DC) signal. The amplifier circuit may further include a current source coupled to the amplifier. The current source may be configured to receive an electrical supply. The current source may further be configured to divide the direct current (DC) signal of the output signal based on the electrical supply.

    AMPLIFIER CIRCUIT WITH AN ENVELOPE ENHANCEMENT

    公开(公告)号:US20220416722A1

    公开(公告)日:2022-12-29

    申请号:US17355205

    申请日:2021-06-23

    Abstract: Amplifier circuits, radio communication circuits, radio communication devices, and methods provided in this disclosure provide an amplifier circuit. The amplifier circuit may include an amplifier configured to amplify an input signal to provide an output signal. The amplifier circuit may further include an amplifier stack including a first transistor coupled to the amplifier. The amplifier stack may be configured to receive the output signal to amplify the output signal. The amplifier stack may be configured to receive an input control signal to control the first transistor based on an envelope of the input signal.

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