一种65nm CMOS正交开关电容功率放大器

Wen Yuan, V. Aparin, J. Dunworth, L. Seward, J. Walling
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引用次数: 9

摘要

本文提出了一种正交开关电容功率放大器(SCPA),其输出功率和效率与基于极性/EER的数字放大器相似。它将同相(I)和正交(Q)信号结合在电荷域的共享电容器阵列上。SCPA采用g类双电源架构,以提高回退效率。这抵消了与信号组合相关的损失。与极性/EER对应物不同,正交SCPA不需要宽带相位调制器或延迟匹配电路。SCPA的峰值输出功率为20.5 dBm,峰值PAE为20%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A quadrature switched capacitor power amplifier in 65nm CMOS
This paper presents a quadrature switched-capacitor power amplifier (SCPA) that achieves similar output power and efficiency as polar/EER based digital PAs. It combines in-phase (I) and quadrature (Q) signals on a shared capacitor array in the charge domain. The SCPA utilizes a class-G dual-supply architecture to improve efficiency at backoff. This counteracts losses associated with the signal combination. Unlike polar/EER counterparts, the quadrature SCPA requires no wideband phase modulator or delay matching circuitry. The SCPA delivers a peak output power of 20.5 dBm with a peak PAE of 20%.
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