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Title: A multiphase switched capacitor power amplifier in 130nm CMOS
This paper presents a multiphase switched-capacitor power amplifier (MP-SCPA). Cartesian combining architectures suffer reduced output power and efficiency owing to combination of out-of-phase signals. The multiphase architecture reduces the phase difference between the basis vectors that are combined, increasing the output power and efficiency compared to the Cartesian combiners. 16 equally spaced phases are produced by a phase generator with each phase's relative amplitude weighted on the bottom plate of a capacitor array and combined on a common top plate, resulting in linear amplification. The MP-SCPA delivers a peak output power and PAE of 26 dBm and 24.9%, respectively. When amplifying an LTE signal the average output power and PAE are 20.9 dBm and 15.2%, respectively while achieving <¿¿¿30 dBc ACLR and 3.5 %-rms EVM.  more » « less
Award ID(s):
1508701
PAR ID:
10018057
Author(s) / Creator(s):
;
Date Published:
Journal Name:
2016 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
Page Range / eLocation ID:
210-213
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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