Ferroelectric-based controllable reflecting surface
Abstract
A theoretical study of a millimeter-wave controllable reflecting surface based on a (BaSr)TiO3-type ferroelectric is presented. The study is pertinent to the development of unconventional antenna systems for communicating with a descent module during the descent stage. It is shown that the change in the coefficient of reflection from the surface can exceed 10 dB under the effect of a constant electric field, owing to a change in the permittivity of the ferroelectric film. The principal control mechanism is resonant microwave absorption in the ferroelectric layer.
- Publication:
-
Radioehlektronika
- Pub Date:
- June 1993
- Bibcode:
- 1993Radel..36...44G
- Keywords:
-
- Antenna Components;
- Barium Titanates;
- Ferroelectricity;
- Spacecraft Communication;
- Strontium Titanates;
- Wave Reflection;
- Dielectric Permeability;
- Fourier Series;
- Surface Properties;
- Space Communications, Spacecraft Communications, Command and Tracking