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    • 2. 发明授权
    • Advanced load-switch circuit with zero phase rotation
    • 先进的负载开关电路,零相旋转
    • US08437714B1
    • 2013-05-07
    • US12835793
    • 2010-07-14
    • Lars Sandahl UbbesenMichael Nielsen
    • Lars Sandahl UbbesenMichael Nielsen
    • H03C1/52
    • H03H7/40
    • The present disclosure relates to the efficient transmission of voice and data signals using mobile terminals, and in particular to optimizing the power added efficiency (PAE) of a power amplifier (PA) by controlling the amplifier's load impedance over a range of radio frequency (RF) output power levels. A power amplifier having a first power level and at least a second power level is provided along with a first impedance matching network section with an output. A second impedance matching network section and at least a third impedance network section in communication with the output are selectably coupled to a load network by switches that are opened and close in response to various power levels of operation for the load switch circuit.
    • 本公开涉及使用移动终端有效地传输语音和数据信号,特别是通过在射频范围(RF)控制放大器的负载阻抗来优化功率放大器(PA)的功率附加效率(PAE) )输出功率电平。 具有第一功率电平和至少第二功率电平的功率放大器与具有输出的第一阻抗匹配网络部分一起提供。 与输出通信的第二阻抗匹配网络部分和至少第三阻抗网络部分通过响应于负载开关电路的各种功率电平的开关而被切换地耦合到负载网络。
    • 3. 发明申请
    • COLLECTOR BOOST
    • 收集器升压
    • US20130027130A1
    • 2013-01-31
    • US13360934
    • 2012-01-30
    • Lars Sandahl UbbesenErik PedersenSøren Deleuran Laursen
    • Lars Sandahl UbbesenErik PedersenSøren Deleuran Laursen
    • H03G3/20
    • H03G3/004H03G3/3047
    • Embodiments of power amplification devices are described with a power amplification circuit that has more than one amplifier stage and with at least a first voltage regulation circuit and a second voltage regulation circuit configured that provide regulated voltages to these amplifier stages. The power amplification device includes a threshold detection circuit to get better maximum output power performance while preserving power efficiency. The threshold detection circuit is configured to increase a first voltage adjustment gain of the first voltage regulation circuit when a regulated voltage level of a second voltage regulation circuit reaches a first threshold voltage level. In this manner, the first voltage adjustment gain can be initially set to be lower than the second voltage adjustment gain until the second voltage regulation circuit is close or has railed. The first voltage adjustment gain can then be increased to allow the first voltage regulation circuit to also rail.
    • 用功率放大电路描述功率放大器件的实施例,功率放大电路具有多于一个的放大器级,并且至少配置有第一调压电路和第二调压电路,该电压调节电路被配置为向这些放大器级提供调节电压。 功率放大装置包括阈值检测电路,以在保持功率效率的同时获得更好的最大输出功率性能。 阈值检测电路被配置为当第二电压调节电路的调节电压电平达到第一阈值电压电平时,增加第一电压调节电路的第一电压调整增益。 以这种方式,第一电压调节增益可以被初始设置为低于第二电压调节增益,直到第二电压调节电路接近或有轨。 然后可以增加第一电压调节增益,以允许第一调压电路也轨。
    • 4. 发明授权
    • Collector boost
    • 收藏家提升
    • US08531240B2
    • 2013-09-10
    • US13360934
    • 2012-01-30
    • Lars Sandahl UbbesenErik PedersenSøren Deleuran Laursen
    • Lars Sandahl UbbesenErik PedersenSøren Deleuran Laursen
    • H03G9/00
    • H03G3/004H03G3/3047
    • Embodiments of power amplification devices are described with a power amplification circuit that has more than one amplifier stage and with at least a first voltage regulation circuit and a second voltage regulation circuit configured that provide regulated voltages to these amplifier stages. The power amplification device includes a threshold detection circuit to get better maximum output power performance while preserving power efficiency. The threshold detection circuit is configured to increase a first voltage adjustment gain of the first voltage regulation circuit when a regulated voltage level of a second voltage regulation circuit reaches a first threshold voltage level. In this manner, the first voltage adjustment gain can be initially set to be lower than the second voltage adjustment gain until the second voltage regulation circuit is close or has railed. The first voltage adjustment gain can then be increased to allow the first voltage regulation circuit to also rail.
    • 用功率放大电路描述功率放大器件的实施例,功率放大电路具有多于一个的放大器级,并且至少配置有第一调压电路和第二调压电路,该电压调节电路被配置为向这些放大器级提供调节电压。 功率放大装置包括阈值检测电路,以在保持功率效率的同时获得更好的最大输出功率性能。 阈值检测电路被配置为当第二电压调节电路的调节电压电平达到第一阈值电压电平时,增加第一电压调节电路的第一电压调整增益。 以这种方式,第一电压调节增益可以被初始设置为低于第二电压调节增益,直到第二电压调节电路接近或有轨。 然后可以增加第一电压调节增益,以允许第一调压电路也轨。