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

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

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
Volume62
Issue number4
DOIs
Publication statusPublished - Apr 2014

Keywords

  • Earth observation
  • imaging
  • interferometry
  • liquid crystals
  • mm-wave
  • polarimetric systems
  • polarizer
  • remote sensing
  • space communications
  • submm-wave
  • tunable
  • FREQUENCY-SELECTIVE SURFACE
  • MILLIMETER
  • ANTENNA

Cite this

Doumanis, E., Goussetis, G., Dickie, R., Cahill, R., Baine, P., Bain, M., Fusco, V., Encinar, J. A., & Toso, G. (2014). Electronically reconfigurable liquid crystal based mm-wave polarization converter. IEEE Transactions on Antennas and Propagation, 62(4), 2302-2307. https://doi.org/10.1109/TAP.2014.2302844