Electrically Tunable Reflective Terahertz Phase Shifter Based on Liquid Crystal

  • Jun Yang
  • Tianyu Xia
  • Shuaicheng Jing
  • Guangsheng Deng
  • Hongbo Lu
  • Yong Fang
  • Zhiping Yin
Article
  • 107 Downloads

Abstract

We present a reflective spatial phase shifter which operates at terahertz regime above 325 GHz. The controllable permittivity of the nematic liquid crystals was utilized to realize a tunable terahertz (THz) reflective phase shifter. The reflective characteristics of the terahertz electromagnetic waves and the liquid crystal parameters were calculated and analyzed. We provide the simulation results for the effect of the incident angle of the plane wave on the reflection. The experiment was carried out considering an array consisting of 30 × 30 patch elements, printed on a 20 × 20 mm quartz substrate with 1-mm thickness. The phase shifter provides a tunable phase range of 300° over the frequency range of 325 to 337.6 GHz. The maximum phase shift of 331° is achieved at 330 GHz. The proposed phase shifter is a potential candidate for THz applications, particularly for reconfigurable reflectarrays.

Keywords

Liquid crystals Phase shifter Reconfigurable antennas Terahertz devices 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Jun Yang
    • 1
  • Tianyu Xia
    • 1
  • Shuaicheng Jing
    • 1
  • Guangsheng Deng
    • 1
  • Hongbo Lu
    • 1
  • Yong Fang
    • 1
  • Zhiping Yin
    • 1
  1. 1.National Key Laboratory of Advanced Display Technology, Academy of Photoelectric TechnologyHefei University of TechnologyHefeiChina

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