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    • 16. 发明申请
    • ENVELOPE POWER SUPPLY CALIBRATION OF A MULTI-MODE RADIO FREQUENCY POWER AMPLIFIER
    • 多模无线电频率功率放大器的包络电源校准
    • US20120034893A1
    • 2012-02-09
    • US13019077
    • 2011-02-01
    • Brian BaxterJason MillardRoman Zbigniew ArkiszewskiSteven Selby
    • Brian BaxterJason MillardRoman Zbigniew ArkiszewskiSteven Selby
    • H03G3/20
    • H03G99/00H03G3/20H03G3/3042H04B1/62
    • The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom.
    • 本公开涉及多模RF功率放大器(PA)的包络电源校准,以在使用多种通信模式中的一种进行操作时确保足够的余量。 通信模式可以包括多种调制模式,半双工模式,全双工模式或其任何组合。 因此,每个通信模式可以具有针对多模式RF PA的特定的峰均功率和线性要求。 因此,每个通信模式可以具有对应的信封电源余量要求。 校准可以包括基于在多模式RF PA的饱和操作期间获得的校准数据来确定饱和操作约束。 在多模RFPA的操作期间,可以限制包络电源以基于多模式RF PA的RF信号电平,通信模式和饱和运行约束来提供最小允许幅度,以提供足够的余量 。
    • 18. 发明授权
    • Excess current and saturation detection and correction in a power amplifier
    • 在功率放大器中过电流和饱和度检测和校正
    • US07962109B1
    • 2011-06-14
    • US11679201
    • 2007-02-27
    • Troy StockstadAlexander Wayne HietalaFares JaoudeRoman Zbigniew Arkiszewski
    • Troy StockstadAlexander Wayne HietalaFares JaoudeRoman Zbigniew Arkiszewski
    • H04B17/00
    • H03G3/3047
    • A system and method for detecting and correcting over-current and/or over-voltage conditions in power amplifier circuitry in a transmit chain of a mobile terminal are provided. In general, over-current detection and correction circuitry combines a current detection signal indicative of a current provided to or drained by the power amplifier circuitry during ramp-up for a transmit burst and a substantially inverse current ramping profile to provide a first constant value. The first constant value is compared to a current threshold or limit value to determine whether an over-current condition exists. If an over-current condition exists, the over-current detection and correction circuitry operates to reduce the output power of the power amplifier circuitry during ramp-up for the transmit burst to correct for the over-current condition. In a similar manner, over-voltage detection circuitry operates to detect and correct over-voltage conditions during ramp-up for the transmit burst.
    • 提供了一种用于在移动终端的发射链中的功率放大器电路中检测和校正过电流和/或过电压条件的系统和方法。 通常,过电流检测和校正电路组合指示在斜波上升期间功率放大器电路提供给发射脉冲串的电流的电流检测信号和用于发射脉冲串的基本上反向电流斜坡分布以提供第一恒定值。 将第一常数值与当前阈值或限制值进行比较,以确定是否存在过电流条件。 如果存在过电流状况,则过流检测和校正电路用于在发射突发的斜坡上降低功率放大器电路的输出功率,以校正过电流状况。 以类似的方式,过电压检测电路用于在发射突发的斜坡上升期间检测和校正过电压状况。
    • 20. 发明授权
    • Over-voltage protection accounting for battery droop
    • 过电压保护计算电池下垂
    • US07977919B1
    • 2011-07-12
    • US11679194
    • 2007-02-27
    • Fares JaoudeRoman Zbigniew ArkiszewskiAlexander Wayne Hietala
    • Fares JaoudeRoman Zbigniew ArkiszewskiAlexander Wayne Hietala
    • H02J7/00
    • H04B1/06H04B2001/0416
    • An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The resistance of the battery is thereafter used to compensate for battery droop during over-voltage detection and correction for one or more subsequent transmit bursts.
    • 提供了一种用于在发送突发期间考虑电池下降的移动终端的发射机的过电压检测和校正系统。 通常,在第一发射突发的斜坡上升之前,测量移动终端的电池在空载状态下的电压。 在发送突发的斜坡上升之后,在满负载时测量电池的电压,并检测在满载时提供给发射机的功率放大器的电流。 基于空载电池的测量电压,满载时电池的测量电压和满载时提供给功率放大器的检测电流,确定电池的电阻。 此后,电池的电阻用于补偿过电压检测期间的电池下降和针对一个或多个后续发射脉冲串的校正。