A 28-GHz full duplex front-end and canceller using two cross-polarized 64-element phased arrays

Jonghoon Myeong, Kyutae Park, Ahmed Nafe, Hyunchul Chung, Gabriel M. Rebeiz, Byung Wook Min

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


This paper presents studies on the self-interference level of a 28-GHz full-duplex phased-array system. The full-duplex system consists of two 64-element phased-arrays and a 28-GHz canceller. The phased-arrays are designed with 2×2 beamformer chips, and the arrays are used as a transmitter and a receiver with a cross-polarization set-up. The 28-GHz canceller is also based on the same 2×2 beamformer chip with multiple-delay taps. The full duplex front-end with a canceller results in 57-dB isolation between the transmitting and receiving arrays at 28.5-29.5 GHz without saturating any LNAs. The system requires only 16-dB additional digital cancellation to bring the self-interference down to the receiver noise floor of 1-GHz bandwidth while the transmit EIRP is maintained at 41 dBm.

Original languageEnglish
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781728168159
Publication statusPublished - 2020 Aug
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: 2020 Aug 42020 Aug 6

Publication series

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


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

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by Space Core Technology Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2017M1A3A3A02016255). J. Myeong and K. Park contributed equally to this paper.

Publisher Copyright:
© 2020 IEEE.

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'A 28-GHz full duplex front-end and canceller using two cross-polarized 64-element phased arrays'. Together they form a unique fingerprint.

Cite this