Paper Info
Title
Efficient RF-PA Two-Chip Supply Modulator Architecture for 4G LTE and 5G NR Dual-Connectivity RF Front-End
Abstract
This paper presents a two-chip supply modulation architecture for efficient RF power amplification using a fully switched-mode supply modulator (SM) and a linear-assisted hybrid SM to support simultaneous transmission on LTE and 5G bands. The designed fully switched-mode SM consists of a fast buck converter and a slow buck converter, and it achieves 88.2% peak efficiency with a low RX band noise of -140dBm/Hz at the SM output. The designed 5G NR SM, consisting of a class-AB linear amplifier (LA) and an interleaved 3-level buck-boost converter provides a 150-MHz 3-dB bandwidth for tracking the 100-MHz envelope signal. An optimal RF-PA supply deployment using the two SMs efficiently supports multiple RF-PA loads while satisfying the dual transmission requirements of E-UTRAN New Radio Dual-Connectivity (EN-DC) and 5G 100-MHz ET operation.
Year
DOI
Venue
2021
10.23919/VLSICircuits52068.2021.9492518
2021 Symposium on VLSI Circuits
Keywords
DocType
ISSN
envelope signal tracking,interleaved 3-level buck-boost converter,5G NR SM,fully switched-mode SM,5G bands,5G ET operation,5G NR dual-connectivity RF front-end,linear-assisted hybrid SM,switched-mode supply modulator,efficient RF power amplification,two-chip supply modulator architecture,efficient RF-PA,E-UTRAN New Radio Dual-Connectivity,dual transmission requirements,multiple RF-PA loads,optimal RF-PA supply deployment,class-AB linear amplifier,SM output,low RX band noise,slow buck converter,fast buck converter,switched-mode SM,4G LTE,frequency 150 MHz,frequency 100 MHz
Conference
2158-5601
ISBN
Citations 
PageRank 
978-1-6654-4766-9
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Ji-seon Paek1165.04
Dongsu Kim263.93
Jae-yeol Han343.70
Young-Hwan Choo432.28
Jong-Woo Lee501.69