Electronically reconfigurable liquid crystal based mm-wave polarization converter

E. Doumanis*, G. Goussetis, R. Dickie, R. Cahill, P. Baine, M. Bain, V. Fusco, J. A. Encinar, G. Toso

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


An electronically tunable reflection polarizer which exploits the dielectric anisotropy of nematic liquid crystals (LC) has been designed, fabricated and measured in a frequency band centered at 130 GHz. The phase agile polarizing mirror converts an incident slant 45 degrees signal upon reflection to right hand circular (RHCP), orthogonal linear (-45 degrees) or left hand circular (LHCP) polarization depending on the value of the voltage biasing the LC mixture. In the experimental set-up this is achieved by applying a low frequency bias voltage of 0 V, 40 V and 89 V respectively, across the cavity containing the LC material.

Original languageEnglish
Pages (from-to)2302-2307
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number4
Publication statusPublished - Apr 2014


  • Earth observation
  • imaging
  • interferometry
  • liquid crystals
  • mm-wave
  • polarimetric systems
  • polarizer
  • remote sensing
  • space communications
  • submm-wave
  • tunable


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