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    • 14. 发明公开
    • IMPEDANCE MATCHING CIRCUITS WITH MULTIPLE CONFIGURATIONS
    • IMPEDANZANPASSUNGSSCHALTUNGEN MIT MEHREREN KONFIGURATIONEN
    • EP2756597A2
    • 2014-07-23
    • EP12784770.5
    • 2012-09-13
    • Qualcomm Incorporated
    • SEE, Puay HoeZHANG, Xiangdong
    • H03F1/56
    • H03F1/56H03H7/38
    • Reconfigurable impedance matching circuits with multiple configurations are disclosed. A reconfigurable impedance matching circuit may be implemented with a set of reactive elements (e.g., inductors and/or capacitors) and a set of switches. Different configurations may be obtained with different settings of the switches and may be associated with different impedance tuning curves. This may enable the reconfigurable impedance matching circuit to provide better impedance matching for a load circuit (e.g., an antenna). In an exemplary design, the reconfigurable impedance matching circuit includes at least one variable reactive element configured to tune the impedance of the reconfigurable impedance matching circuit in order to provide better impedance matching. In an exemplary design, the reconfigurable impedance matching circuit may include at least one reconfigurable reactive element, each of which can be connected as a series element or a shunt element.
    • 公开了具有多种配置的可重构阻抗匹配电路。 可重构阻抗匹配电路可以用一组无功元件(例如,电感器和/或电容器)和一组开关来实现。 可以通过开关的不同设置获得不同的配置,并且可以与不同的阻抗调谐曲线相关联。 这可以使可重构阻抗匹配电路为负载电路(例如,天线)提供更好的阻抗匹配。 在示例性设计中,可重构阻抗匹配电路包括至少一个可变无功元件,其被配置为调整可重构阻抗匹配电路的阻抗,以便提供更好的阻抗匹配。 在示例性设计中,可重新配置的阻抗匹配电路可以包括至少一个可重新配置的反应元件,每个元件可以串联元件或分流元件连接。
    • 17. 发明公开
    • TUNABLE MATCHING CIRCUITS FOR POWER AMPLIFIERS
    • ABSTIMMBARE ANPASSUNGSSCHALTUNGENFÜRLEISTUNGSVERSTÄRKER
    • EP2438682A2
    • 2012-04-11
    • EP10727246.0
    • 2010-06-03
    • QUALCOMM Incorporated
    • SEE, Puay HoeHADJICHRISTOS, AristoteleSAHOTA, Gurkanwal Singh
    • H04B1/04
    • H04B1/0458H03F1/565H03F3/24H03F3/72H03F2200/111H03F2200/378H03F2200/387H03F2203/7209
    • Tunable matching circuits for power amplifiers are described. In an exemplary design, an apparatus may include a power amplifier and a tunable matching circuit. The power amplifier may amplify an input RF signal and provide an amplified RF signal. The tunable matching circuit may provide output impedance matching for the power amplifier, may receive the amplified RF signal and provide an output RF signal, and may be tunable based on at least one parameter effecting the operation of the power amplifier. The parameter(s) may include an envelope signal for the amplified RF signal, an average output power level of the output RF signal, a power supply voltage for the power amplifier, IC process variations, etc. The tunable matching circuit may include a series variable capacitor and/or a shunt variable capacitor. Each variable capacitor may be tunable based on a control generated based on the parameter(s).
    • 描述了用于功率放大器的可调谐匹配电路。 在示例性设计中,设备可以包括功率放大器和可调谐匹配电路。 功率放大器可以放大输入RF信号并提供放大的RF信号。 可调谐匹配电路可以为功率放大器提供输出阻抗匹配,可以接收放大的RF信号并提供输出RF信号,并且可以基于影响功率放大器的操作的至少一个参数来调节。 该参数可以包括放大的RF信号的包络信号,输出RF信号的平均输出功率电平,功率放大器的电源电压,IC处理变化等。可调谐匹配电路可以包括一系列 可变电容器和/或分流可变电容器。 每个可变电容器可以基于基于参数产生的控制来调节。