Microwave power amplifiers with digitally-controlled power supply voltage for high efficiency and high linearity
Microwave power amplifiers with digitally-controlled power supply voltage for high efficiency and high linearity
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DOI：
10.1109/mwsym.2000.861088
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发表时间：
2000-06
期刊：
影响因子：
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通讯作者：
M. Ranjan;K. Koo;G. Hanington;C. Fallesen;P. Asbeck
中科院分区：
文献类型：
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作者：
M. Ranjan;K. Koo;G. Hanington;C. Fallesen;P. Asbeck
提出了一种功率放大器架构，其包括具有高效、高调制带宽DC-DC转换器的基本放大器。放大器和DC-DC转换器由数字信号处理器控制，该数字信号处理器提供输入信号预失真、电源电压优化和均衡。在950 MHz的实验结果表明，ACPR值可以接受的IS-95 CDMA手机应用。使用可变电源时，整体效率提高了1.4/spl乘以/（在代表性使用条件下取平均值时）。
A power amplifier architecture is presented which comprises a basic amplifier with an efficient, high modulation bandwidth DC-DC converter. The amplifier and the DC-DC converter are controlled by a digital signal processor that provides input signal pre-distortion, supply voltage optimization and equalization. Experimental results at 950 MHz showed ACPR values acceptable for IS-95 CDMA handset applications. With variable power supply, the overall efficiency improved by a factor of 1.4/spl times/ (when averaged over representative conditions of usage).