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发明公开
CN104067513A 具有可调谐负载匹配的多模旁路激励放大器 失效 - 权利终止

具有可调谐负载匹配的多模旁路激励放大器
摘要：
公开了具有可调谐负载匹配的多模激励放大器。在一示例性设计中，一种装置包括多模激励放大器和可调谐阻抗匹配电路。该激励放大器放大输入射频RF信号并提供经放大的RF信号。可调谐阻抗匹配电路匹配激励放大器的输出阻抗。该装置可包括主发射路径(510)和旁路发射路径(512)。旁路发射路径(512)可包括激励放大器(542)和可调谐阻抗匹配电路(552)且没有功率放大器。主发射路径(510)可包括第二激励放大器(540)和功率放大器(560)。可选择主发射路径(510)用于高于阈值电平的发射功率电平，并且可选择旁路发射路径(512)用于低于阈值电平的发射功率电平。
摘要（英）：

A multi-mode driver amplifier with tunable load matching is disclosed. In an exemplary design, an apparatus includes a multi-mode driver amplifier and a tunable impedance matching circuit. The driver amplifier amplifies an input radio frequency, RF, signal and provides an amplified RF signal. The tunable impedance matching circuit matches an output impedance of the driver amplifier. The apparatus may include a main transmit path (510) and a bypass transmit path (512). The bypass transmit path (512) may include the driver amplifier (542) and the tunable impedance matching circuit (552) and no power amplifier. The main transmit path (510) may include a second driver amplifier (540) and a power amplifier (560). The main transmit path (510) may be selected for transmit power levels higher than a threshold level, and the bypass transmit path (512) may be selected for transmit power levels lower than the threshold level.

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