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发明公开
CN110838824A 用于改善线性度的偏置电路和功率放大器 审中-实审

用于改善线性度的偏置电路和功率放大器
摘要：
本公开涉及一种用于改善线性度的偏置电路和功率放大器，所述偏置电路包括：电流源，用于产生参考电流；温度补偿部，响应于第一控制信号而在初始启动时段内处于断开状态，并且在所述初始启动时段之后的正常驱动时段内处于导通状态，并且接收所述参考电流的第一电流；以及偏置输出部，在所述初始启动时段内基于所述参考电流产生预热电流，并且在所述正常驱动时段内基于比所述参考电流低所述第一电流的量的第二电流产生偏置电流。
摘要（英）：

The disclosure relates to a bias circuit and a power amplifying device for improving linearity. The bias circuit includes a current source to generate a reference current, a temperature compensation portion in an off-state in an initial start period in response to a first control signal, and in an on-state in a normal driving period, subsequent to the initial start period, and to receive a first current of the reference current, and a bias output portion to generate a warm up current based on the reference current in the initial start period and to generate a bias current based on a second current, which is lower than the reference current by an amount of the first current, in the normal driving period.

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