A liquid crystal phase shifter based on artificial surface plasmon

Xiaoke Su; Yin Jin; Tianliang Zhang; Wanpeng Hou; Yiheng Zhang; Shuqi Jing

doi:10.1117/12.3015735

16 January 2024 A liquid crystal phase shifter based on artificial surface plasmon

Xiaoke Su, Yin Jin, Tianliang Zhang, Wanpeng Hou, Yiheng Zhang, Shuqi Jing

Proceedings Volume 12973, Workshop on Electronics Communication Engineering (WECE 2023); 1297308 (2024) https://doi.org/10.1117/12.3015735
Event: Workshop on Electronics Communication Engineering (WECE 2023), 2023, Guilin, China

Abstract

In this paper, artificial surface equipartition excitations are applied to phase shifter to realize the miniaturization of phase shifter. A coplanar waveguide liquid crystal phase shifter is designed based on the artificial surface equipartition exciton structure, which operates in the frequency band of 42-48 GHz. In the case of achieving a large phase shift of 360°, the liquid crystal cavity length of the conventional coplanar waveguide structure-based liquid crystal phase shifter is 78.6mm, while the designed phase shifter uses a metal strip structure with periodic uniform slotting, which increases the contact area between the transmission line and the liquid crystal, making the length of the liquid crystal cavity only 28.8mm, which greatly reduces the size of the phase shifter. The final design of the liquid crystal phase shifter in the operating band, the liquid crystal dielectric constant changes from 2.4 to 3.2 in the case of the return loss are less than -15.0dB, the maximum insertion loss is 5.1dB, the quality factor is FOM = 76.3 °/dB.

Citation Download Citation

Xiaoke Su, Yin Jin, Tianliang Zhang, Wanpeng Hou, Yiheng Zhang, and Shuqi Jing "A liquid crystal phase shifter based on artificial surface plasmon", Proc. SPIE 12973, Workshop on Electronics Communication Engineering (WECE 2023), 1297308 (16 January 2024); https://doi.org/10.1117/12.3015735

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