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A 0.7-2.5 GHz, 61% EIRP System Efficiency, Four-Element MIMO TX System Exploiting Integrated Power-Relaxed Power Amplifiers and an Analog Spatial De-Interleaver
Yu, Wei-Han; Un, Ka-Fai; Mak, Pui-In; Martins, Rui P.
2018-01
Source PublicationIEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
ISSN1549-8328
Volume65Issue:1Pages:14-25
Abstract

This paper describes a four-element multiple-input multiple-output (MIMO) transmitter (TX) system that features an analog spatial de-interleaver to simplify the baseband-input complexity and increase the spatial matching of the sub-TXs. The MIMO diversity gain and power-combining gain are jointly exploited to relax the output power of the four power amplifiers and eliminate their output matching networks, leading to a compact implementation of the entire TX system. The MIMO effectiveness is improved by introducing an radio-frequency to baseband dc feedback technique that enhances the matching among the sub-TXs against process variation. In the verification, the TX system is co-designed with a compact antenna array-on-PCB that generates a null zone in the propagation pattern, and the electric-field polarization angle, to achieve diversity propagation. All techniques together improve the signal-to-noise ratio or data rate by generating multiple data streams according to the signal power arriving at the receiver over different fading channels. The four-element TX chip fabricated in 65-nm CMOS occupies a die area of 1.44 mm(2). It covers an RF range of 0.7-2.5 GHz, and shows an equivalent isotropically radiated power of 23.9 dBm. When transmitting a 20-MHz 64-QAM orthogonal frequency division multiplexing signal at 2.3 GHz, the average system efficiency is 61% and error-vector magnitude is -26 dB.

KeywordAntenna Array Beamforming Cmos Diversity Gain Error-vector Magnitude (Evm) Fading Channel Mobile Multiple-input Multiple-output (Mimo) Mimo Decoder Matching Network (Mn) Pulse-shaping Filter (Psf) Power Amplifier (Pa) Transmitter (Tx) Signal-to-noise Ratio (Snr) Wideband
DOIhttp://doi.org/10.1109/TCSI.2017.2713422
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000422660500003
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationState-Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Yu, Wei-Han,Un, Ka-Fai,Mak, Pui-In,et al. A 0.7-2.5 GHz, 61% EIRP System Efficiency, Four-Element MIMO TX System Exploiting Integrated Power-Relaxed Power Amplifiers and an Analog Spatial De-Interleaver[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS,2018,65(1):14-25.
APA Yu, Wei-Han,Un, Ka-Fai,Mak, Pui-In,&Martins, Rui P..(2018).A 0.7-2.5 GHz, 61% EIRP System Efficiency, Four-Element MIMO TX System Exploiting Integrated Power-Relaxed Power Amplifiers and an Analog Spatial De-Interleaver.IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS,65(1),14-25.
MLA Yu, Wei-Han,et al."A 0.7-2.5 GHz, 61% EIRP System Efficiency, Four-Element MIMO TX System Exploiting Integrated Power-Relaxed Power Amplifiers and an Analog Spatial De-Interleaver".IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS 65.1(2018):14-25.
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