Wei-Lun Ou, Yu-Kai Tsai, Po-Yen Tseng, Liang-Hung Lu
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引用次数: 5
摘要
提出了一种可调整晶体管尺寸的2.4 ghz双模功率放大器。该方法在两种模式下均保持电导恒定以达到最佳功率匹配。通过引入变压器和电容器，50欧姆负载匹配到接近最佳阻抗的尺寸MOS晶体管。采用0.18 pm CMOS工艺，在6.5 db /9 db发射功率下，所提出的PA的PAE分别提高了2.7倍/2.3倍。
A 2.4-GHz dual-mode resizing power amplifier with a constant conductance output matching
A 2.4-GHz dual-mode power amplifier with transistor resizing is proposed. The proposed technique keeps the conductance for optimum power-matching constant in both modes. By introducing transformers and capacitors, the 50-ohm load is matched to near-optimal impedances for size-scaling MOS transistors. Using a 0.18-pm CMOS process, the proposed PA demonstrates a PAE enhancement of 2.7×/2.3× respectively at 6.5-dB/9-dB transmitting power back-off.
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