摘要
We propose a dual band CMOS power amplifier for mobile WiMAX systems. The power amplifier,combined with an active matching transformer,is fully integrated and fabricated in a 0.13μm CMOS process. The transformer operates at dual bands with active matching circuit. The measured result shows that the transformer efficiency of 78.2% and 70.4% at 2.5 and 3.5GHz are realized,respectively,and 26.5 and 24. 8dB gain are achieved. The PAE reaches 20% and 28% at 2.5 and 3.5GHz, respectively. The third inter-modulation （IM3） is lower than - 30dBc at the 25dBm average power.
设计了基于有源转换器的双频带射频CMOS功率放大器,该放大器可以应用于移动WiMAX系统.设计采用了0.13μm CMOS工艺并且所有的匹配完全集成在芯片内.转换器可以通过有源匹配而在双频带工作,在2.5和3.5GHz,转换器的效率为78.2%和70.4%,功率放大器的增益分别为26.5和24.8dB,功率增加效率为20%和28%,在平均功率25dBm处,三阶交调系数均低于-30dBc.
基金
the Research Fund for the Doctoral Program of Higher Education of China~~
