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A Multiband FDD SAW-Less Transmitter for 5G-NR Featuring a BW-Extended N-Path Filter-Modulator, a Switched-BB Input, and a Wideband TIA-Based PA Driver
Qi,Gengzhen1,2; Shao,Haijun1,2; Mak,Pui In1,2; Yin,Jun1,2; Martins,Rui P.1,2
2020-12-01
Source PublicationIEEE Journal of Solid-State Circuits
ISSN0018-9200
Volume55Issue:12Pages:3387-3399
AbstractThis article reports a multiband frequency-division duplex (FDD) SAW-less transmitter (TX) for 5G new radio (5G-NR). It features a bandwidth-extended N-path filter-modulator (BW-Ext FIL-MOD) to enable high- Q bandpass filtering at a flexible RF and the synthesis of a complex-pole pair via merging positive- and negative-feedback networks (PFN/NFN) enhances its bandpass characteristic, surmounting the tradeoff between the passband flatness and out-of-band (OB) rejection, a switched-baseband (BB) input network to avoid the mutual loading effect between the BW-Ext FIL-MOD and itself, and a transimpedance amplifier (TIA)-based power-amplifier driver (PAD) to absorb both the bias and signal currents of the BW-Ext FIL-MOD for better linearity and power efficiency. Fabricated in 28-nm CMOS, the proposed TX manifests a 20-MHz passband BW and a consistently low OB noise (≤-157.5 dBc/Hz) for different 5G-NR bands between 1.4 and 2.7 GHz. The TX achieves sufficient output power (3 dBm), high TX efficiency (2.8%-3.6%), and high linearity (ACLR1 < 44 dBc and EVM < 2%). The active area is 0.31 mm2.
Keyword5G new radio (5G-NR) adjacent-channel leakage rejection (ACLR) bandpass filter bandwidth-extended Npath filter modulator (BW-Ext FIL-MOD) baseband (BB) CMOS Miller effect multiband N-path out-of-band (OB) passive mixer phase noise positive-feedback network (PFN) power amplifier driver (PAD) surface acoustic wave (SAW) switched capacitor (SC) switched-BB input network transmitter (TX)
DOI10.1109/JSSC.2020.3021687
URLView the original
Language英语
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.State Key Laboratory of Analog and Mixed-Signal Vlsi,Institute of Microelectronics,University of Macau,Macao,Macao
2.Faculty of Science and Technology (ECE),University of Macau,Macao,Macao
First Author AffilicationUniversity of Macau;  Faculty of Science and Technology
Recommended Citation
GB/T 7714
Qi,Gengzhen,Shao,Haijun,Mak,Pui In,et al. A Multiband FDD SAW-Less Transmitter for 5G-NR Featuring a BW-Extended N-Path Filter-Modulator, a Switched-BB Input, and a Wideband TIA-Based PA Driver[J]. IEEE Journal of Solid-State Circuits,2020,55(12):3387-3399.
APA Qi,Gengzhen,Shao,Haijun,Mak,Pui In,Yin,Jun,&Martins,Rui P..(2020).A Multiband FDD SAW-Less Transmitter for 5G-NR Featuring a BW-Extended N-Path Filter-Modulator, a Switched-BB Input, and a Wideband TIA-Based PA Driver.IEEE Journal of Solid-State Circuits,55(12),3387-3399.
MLA Qi,Gengzhen,et al."A Multiband FDD SAW-Less Transmitter for 5G-NR Featuring a BW-Extended N-Path Filter-Modulator, a Switched-BB Input, and a Wideband TIA-Based PA Driver".IEEE Journal of Solid-State Circuits 55.12(2020):3387-3399.
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