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A High-Voltage-Enabled Class-D Polar PA Using Interactive AM-AM Modulation, Dynamic Matching, and Power-Gating for Average PAE Enhancement
Yu, Wei-Han; Peng, Xingqiang; Mak, Pui-In; Martins, Rui P.
2017-11
Source PublicationIEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
ISSN1549-8328
Volume64Issue:11Pages:2844-2857
AbstractThis paper describes a 2.4-GHz digitally-modulated class-D polar power amplifier (PA) with novel circuit techniques to enhance the average power-added efficiency (PAEave) that becomes increasingly crucial to prolong the battery lifetime. The PA features 5+5-b interactive AM-AM modulation between the class-D unit amplifiers and a novel high resolution dynamic matching network (DMN) to improve the back-off PAE. A novel power-gating technique tailored for class-D PAs is also proposed and embedded into each unit amplifier and its driver (tapped inverter chain), alleviating leakage-current suppression, area reduction of the DMN, and direct-powering by a standard 1.5-V AA battery. An high back-off power efficiency is made possible by introducing a multi-bit capacitively-tuned DMN, which adds low loss while improving the PAE of the unit amplifiers using the load-pull optimization. The DMN also can correct the antenna impedance mismatch for better average Pout (Pout, ave) and PAEave under a practical VSWR (2.5 : 1), and aids to reconfigure the PA between the Pout-optimized and the PAEoptimized modes. For a 20-MHz64-QAM OFDM output at a typical EVM (< -25 dB), the 65-nm CMOS PA exhibits 40.7% PAEave at a 16.3-dBm Pout. The mode switching is demonstrated as a prospective function for battery lifetime extension.
KeywordAA Battery antenna impedance mismatch class-D CMOS digital AM modulation dynamic matching network (DMN) error-vector magnitude (EVM) inverter chain leakage current matching network (MN) polar power amplifier (PA) power-added efficiency (PAE) power gating
DOI10.1109/TCSI.2017.2703584
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000413962000003
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Recommended Citation
GB/T 7714
Yu, Wei-Han,Peng, Xingqiang,Mak, Pui-In,et al. A High-Voltage-Enabled Class-D Polar PA Using Interactive AM-AM Modulation, Dynamic Matching, and Power-Gating for Average PAE Enhancement[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS,2017,64(11):2844-2857.
APA Yu, Wei-Han,Peng, Xingqiang,Mak, Pui-In,&Martins, Rui P..(2017).A High-Voltage-Enabled Class-D Polar PA Using Interactive AM-AM Modulation, Dynamic Matching, and Power-Gating for Average PAE Enhancement.IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS,64(11),2844-2857.
MLA Yu, Wei-Han,et al."A High-Voltage-Enabled Class-D Polar PA Using Interactive AM-AM Modulation, Dynamic Matching, and Power-Gating for Average PAE Enhancement".IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS 64.11(2017):2844-2857.
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