A 38-GHz 32-Element phased-array transmitter based on scalable 8-Element phased-array modules for 5G MMW data links

Chun Nien Chen, Li Cheng Hung, Yi Hsien Lin, Tzu Chien Tang, Wei Pang Chao, Guan Yu Lin, Wei Jun Liao, Yu Hsiang Nien, Wei Cheng Huang, Tai Yu Kuo, Kun You Lin, Tian Wei Huang, Yi Cheng Lin, Hsin Chia Lu, Tsung Heng Tsai, Huei Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper presents a 38-GHz 32-element phased-array Tx (transmitter) for the 5G millimeter wave (MMW) communications. The 8-element phased-array Tx modules with 2 GHz IF/5 GHz LO are implemented, and four pieces of the module are stacked to realize an 8×4 brick array. The 38 GHz measurements of the 32-element Tx show 41.8 dBm EIRP at OP1dB with -41.8 dBc image rejection ratio (IMRR) and -35 dBc ×8 LO rejection ratio (×8 LORR). The EIRPs at OP1dB in beam scanning around ±60° azimuth/± 30° elevation planes are 41.8 to 38.3 dBm. The Tx is utilized for data links with a horn antenna module in 35 m that demonstrates 256 QAM/100M-BR (baud rate) with -33.1 dB EVM. The data links of the Tx with a 4-element phased-array Rx (receiver) in 6 m demonstrates 64 QAM/200M-BR with -26.4 dB EVM. The scalable Tx module shows potential for 5G sub-6 GHz/MMW coexistent applications and can be expanded as a massive phased-array using the simple/low-cost stacked methods.

Original languageEnglish
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages695-698
Number of pages4
ISBN (Electronic)9781728168159
DOIs
StatePublished - Aug 2020
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: 4 Aug 20206 Aug 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2020-August
ISSN (Print)0149-645X

Conference

Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
Country/TerritoryUnited States
CityVirtual, Los Angeles
Period4/08/206/08/20

Keywords

  • 5G MMW
  • Beam scanning
  • Brick array
  • EIRP
  • EVM
  • IMRR
  • Phased-array
  • QAM
  • Tx
  • ×8 LORR

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