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Compact phase shifter based on highly anisotropic liquid crystals for microwave frequency

Compact phase shifter based on highly anisotropic liquid crystals for microwave frequency

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A compact microwave phase shifter was designed and fabricated using highly anisotropic liquid crystals (LCs). It comprises a thin LC layer between a ground plane and a directly coupled and inverted microstrip line. The proposed folding configuration is beneficial for size reduction. Both simulation and experimental results confirm the compact size devices with reasonably good performance.

References

    1. 1)
      • 1. Oswald, P., Pieranksi, P.: ‘Nematic and cholesteric liquid crystals’ (Taylor & Francis, Boca Raton, FL, USA, 2005).
    2. 2)
      • 2. Chigrinov, V.: ‘Liquid crystal devices’ (Artech House, Boston, MA, USA, 1999).
    3. 3)
      • 3. Khoo, I.-C.: ‘Liquid crystals’ (Wiley, Hoboken, NJ, USA, 2007, 2nd edn).
    4. 4)
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