A Ka-band digitally-controlled phase shifter with sub-degree phase precision

Yahya Tousi, Alberto Valdes-Garcia

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

28 Scopus citations

Abstract

We present a passive digital-to-phase converter with sub-degree phase precision for phased array frontends. The phase tuning approach is based on manipulating the electromagnetic properties of an artificially constructed transmission line. By simultaneously controlling dispersion, characteristic impedance, and loss across the structure, the phase shifter minimizes phase imprecisions while ensuring a flat amplitude response across different phase settings. The chip prototype is fabricated in a 130nm SiGe BiCMOS process, occupies an area of 0.18mm2, and consumes no power. The insertion loss is -9.3 dB ± 0.25 dB at 28 GHz. The phase control operates with 4.75 degree steps while maintaining an RMS phase error of 0.6 degrees across multiple chips and temperatures, demonstrating the best phase and amplitude accuracy when compared to state-of-the-art integrated microwave and mm-wave phase shifters.

Original languageEnglish (US)
Title of host publicationRFIC 2016 - 2016 IEEE Radio Frequency Integrated Circuits Symposium
EditorsSrenik Mehta, Li Lin
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages356-359
Number of pages4
ISBN (Electronic)9781467386500
DOIs
StatePublished - Jul 8 2016
Event2016 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2016 - San Francisco, United States
Duration: May 22 2016May 24 2016

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2016-July
ISSN (Print)1529-2517

Other

Other2016 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2016
CountryUnited States
CitySan Francisco
Period5/22/165/24/16

Keywords

  • Phase shifter
  • mm-wave
  • passive
  • phase resolution
  • phased array

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    Tousi, Y., & Valdes-Garcia, A. (2016). A Ka-band digitally-controlled phase shifter with sub-degree phase precision. In S. Mehta, & L. Lin (Eds.), RFIC 2016 - 2016 IEEE Radio Frequency Integrated Circuits Symposium (pp. 356-359). [7508326] (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium; Vol. 2016-July). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RFIC.2016.7508326