HIGH-FREQUENCY SIGNAL PROCESSING APPARATUS AND WIRELESS COMMUNICATION APPARATUS

    公开(公告)号:US20210235392A1

    公开(公告)日:2021-07-29

    申请号:US17229412

    申请日:2021-04-13

    Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.

    POWER AMPLIFIER
    2.
    发明申请

    公开(公告)号:US20210175853A1

    公开(公告)日:2021-06-10

    申请号:US16953890

    申请日:2020-11-20

    Abstract: A power amplifier includes a 3-dB coupler which splits a first signal into a second signal and a third signal lagging behind the second signal by 90°, a carrier amplifier, a peak amplifier, and a hybrid coupler. The carrier amplifier amplifies the second signal and outputs a fourth signal when the first-signal power level is a first level or higher. The peak amplifier amplifies the third signal and outputs a fifth signal when the first-signal power level is a second level or higher, which is higher than the first level. The hybrid coupler includes a first transmission line receiving the fourth signal at its first terminal, and a second transmission line receiving the fifth signal at its first terminal and being open at its second terminal. The first transmission line outputs, from its second terminal, an amplified first signal obtained by combining the fourth and fifth signals.

    TRANSMISSION UNIT
    5.
    发明申请

    公开(公告)号:US20210050873A1

    公开(公告)日:2021-02-18

    申请号:US17088246

    申请日:2020-11-03

    Abstract: A transmission unit includes: a power amplification module that amplifies the power of an input signal and outputs an amplified signal; and a power supply module that supplies a power supply voltage to the power amplification module on the basis of a first control signal corresponding to the band width of the input signal. On the basis of the first control signal, the power supply module varies the power supply voltage in accordance with the amplitude level of the input signal in the case where the band width of the input signal is a first band width and varies the power supply voltage in accordance with the average output power of the power amplification module in the case where the band width of the input signal is a second band width that is larger than the first band width.

    POWER AMPLIFIER CIRCUIT
    6.
    发明申请

    公开(公告)号:US20200343861A1

    公开(公告)日:2020-10-29

    申请号:US16854424

    申请日:2020-04-21

    Abstract: A power amplifier circuit includes a first amplifier including two amplifiers connected in series with a matching circuit interposed therebetween, a first power supply circuit that supplies a first power supply voltage to a former amplifier of the first amplifier, and a second power supply circuit that supplies a second power supply voltage to a latter amplifier of the first amplifier.

    TRANSMISSION UNIT
    7.
    发明申请
    TRANSMISSION UNIT 审中-公开

    公开(公告)号:US20200044673A1

    公开(公告)日:2020-02-06

    申请号:US16598515

    申请日:2019-10-10

    Abstract: A transmission unit includes: a power amplification module that amplifies the power of an input signal and outputs an amplified signal; and a power supply module that supplies a power supply voltage to the power amplification module on the basis of a first control signal corresponding to the band width of the input signal. On the basis of the first control signal, the power supply module varies the power supply voltage in accordance with the amplitude level of the input signal in the case where the band width of the input signal is a first band width and varies the power supply voltage in accordance with the average output power of the power amplification module in the case where the band width of the input signal is a second band width that is larger than the first band width.

    POWER AMPLIFIER CIRCUIT AND POWER AMPLIFIER MODULE

    公开(公告)号:US20240339969A1

    公开(公告)日:2024-10-10

    申请号:US18750079

    申请日:2024-06-21

    Abstract: A power amplifier circuit includes: a first power splitter that splits an input signal into a first input signal and a second input signal; an amplifier circuit that includes a pair of amplifiers electrically connected in parallel and that amplifies the first input signal and outputs an output signal to an output terminal; a control amplifier that amplifies the second input signal and outputs, to the amplifier circuit, a control signal for controlling load impedance of the amplifier circuit; and a first impedance matching unit that is electrically connected in series between the amplifier circuit and the control amplifier and includes a transmission line transformer.

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