A Scalable Multi-Chip Self-Aligning Ka-Band Phased Array

Ruixing He, Alireza Rouhafza, Yahya Tousi

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

1 Scopus citations


This work presents a scalable phased array architecture based on background phase alignment between its nearest neighbors. We implement the proposed interferometric phase monitoring scheme in a multi-chip array configuration with chip-to-chip bonding between adjacent modules. The prototype 1× 7 phased array consists of 7 transmitter chips and 6 control chips all fabricated in the TSMC 65 n m CMOS process. The die areas of the two modules are 0.86 m m2 and 0.41 m m2, respectively. The array demonstrates a measured ± 30° beam steering consistent with 210° measured phase tuning range between adjacent neighbors. The transmitter phase noise is-114.6dBc/Hz at 1MHz offset at 30GHz and operates across a 16.7% fractional bandwidth. To the best of our knowledge, this work presents the first scalable self-aligning and beam steering mm-wave phased array.

Original languageEnglish (US)
Title of host publicationESSCIRC 2023 - IEEE 49th European Solid State Circuits Conference
PublisherIEEE Computer Society
Number of pages4
ISBN (Electronic)9798350304206
StatePublished - 2023
Externally publishedYes
Event49th IEEE European Solid State Circuits Conference, ESSCIRC 2023 - Lisbon, Portugal
Duration: Sep 11 2023Sep 14 2023

Publication series

NameEuropean Solid-State Circuits Conference
ISSN (Print)1930-8833


Conference49th IEEE European Solid State Circuits Conference, ESSCIRC 2023

Bibliographical note

Publisher Copyright:
© 2023 IEEE.


  • Phased array
  • mm-wave
  • phase control
  • scalable


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