具有可重构输出匹配网络的5.5 ghz多模功率放大器

2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2015-05-17 DOI:10.1109/RFIC.2015.7337740

Huan-Sheng Chen, Yi-Keng Hsieh, Liang-Hung Lu

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引用次数: 4

摘要

提出了一种具有可重构输出匹配网络的5.5 ghz多模PA，该网络可实现尺寸MOS晶体管的近最佳阻抗。采用两个变压器配合级旁通技术进行阻抗粗调谐和一个开关电容进行阻抗微调来实现所需的负载自适应。采用90纳米CMOS工艺，所提出的PA在6 db、9 db和15 db发射功率回退时的PAE分别提高了2.2倍、3.0倍和5.0倍。

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A 5.5-GHz multi-mode power amplifier with reconfigurable output matching network

A 5.5-GHz multi-mode PA with a reconfigurable output matching network which enables near-optimal impedances for size-scaling MOS transistors is proposed. The required load adaption is realized by using two transformers along with stage-bypassing technique for impedance coarse tuning and a switched capacitor for impedance fine tuning. Using a 90-nm CMOS process, the proposed PA demonstrates a PAE enhancement of 2.2×, 3.0×, and 5.0× respectively at 6-dB, 9-dB, and 15-dB transmit power back-off.

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2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

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