Phased Antenna Arrays based on Liquid Crystals
Phased antenna arrays are critically dependent on the phase shifter components.
In its simplest form a phase shifter is realized through a delay line or other circuit approaches that
can affect the phase. There are considerable difficulties to achieve broadband performance
A novel approach is to take advantage of Liquid Crystals (LC) that can alter their permittivity with an
external voltage and are excellent in broadband performance.
This method has been exploited by Alcan Systems, a spin-off from TU Darmstadt, Germany
to offer antennas that could also be suitable for mobile satellite communications.