Liquid crystal phase shifters at millimeter wave frequencies.

Autor: Garbovskiy, Yu., Zagorodnii, V., Krivosik, P., Lovejoy, J., Camley, R. E., Celinski, Z., Glushchenko, A., Dziaduszek, J., Polish_hook, R.
Předmět:
Zdroj: Journal of Applied Physics; Mar2012, Vol. 111 Issue 5, p054504, 4p, 1 Diagram, 1 Chart, 5 Graphs
Abstrakt: We demonstrate an on-wafer liquid crystal phase shifter which has a tunable 0-300°/cm phase shift at 110 GHz. The results show no dispersion over the entire frequency range indicating a tunable 'true time delay' of up to 2.5 ps/cm at all frequencies. The inherent losses in the liquid crystal are small, less than 1 dB/cm over the range of 1-110 GHz. The full tunability is achieved using small voltages, close to 10 V. We anticipate that one could achieve a phase shift of 600°/cm at 220 GHz. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index