X-band printed phased array antennas using high-performance CNT/ion gel/Ag transistors

Peter M. Grubb, Fazel Bidoky, Ankit Mahajan, Harish Subbaraman, Wentao Li, Daniel Frisbie, Ray T. Chen

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

10 Scopus citations


This paper reports a fully printed phased array antenna developed on a 125 micron thick flexible Kapton substrate. Switching for the phase delay lines is accomplished using printed carbon nanotube transistors with ion gel dielectric layers. Design of each element of the phased array antenna is reported, including a low loss constant impedance power divider, a phase shifter network, and patch antenna design. Steering of an X-band PAA operating at 10GHz from 0 degrees to 22.15 degrees is experimentally demonstrated. In order to completely package the array with electrical interconnects, a single substrate interconnect scheme is also investigated.

Original languageEnglish (US)
Title of host publicationLaser 3D Manufacturing III
EditorsAlberto Pique, Bo Gu, Henry Helvajian
ISBN (Electronic)9781628419733
StatePublished - 2016
EventLaser 3D Manufacturing III - San Francisco, United States
Duration: Feb 15 2016Feb 18 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherLaser 3D Manufacturing III
Country/TerritoryUnited States
CitySan Francisco

Bibliographical note

Publisher Copyright:
© 2016 SPIE.


  • X-band
  • carbon nanotubes
  • inkjet printing
  • phased array antenna
  • printed electronics
  • printed transistor


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