A quasi-optical circular polarization duplexer using an artificial anisotropic dielectric medium
Abstract
A new quasi-optical input-output separator is presented. The separator consists of a polarization splitter and a circular polarizer, in which anisotropy is artificially created by alternately laminating two kinds of dielectric plates. The fundamental characteristics of the circular polarizer and a polarization splitter are first analyzed theoretically; the individual components are then combined to develop a diplexer design. Test experiments were performed at the 90 GHz band, and showed that the diplexer had an extremely low-loss wideband circuit: the insertion loss was 0.3 dB and the isolation was more than 20 dB in the relative bandwidth of 19%. The diplexer is shown to be useful in constructing a circuit in which the incident and reflected waves propagate on the same transmission path.
- Publication:
-
Electronics Communications of Japan
- Pub Date:
- September 1979
- Bibcode:
- 1979JElCo..62...59W
- Keywords:
-
- Anisotropic Media;
- Beam Splitters;
- Circular Polarization;
- Dielectrics;
- Duplexers;
- Optical Polarization;
- Incident Radiation;
- Insertion Loss;
- Isolation;
- Optical Resonators;
- Wave Reflection;
- Electronics and Electrical Engineering