A comparative study of metal, G.R.P. and wire-loaded G. R. P. struts for use in space frame
Abstract
The scattering by a dielectric cylinder of arbitrary cross-section shape theory of Richmond (1965) is applied to the study of rectangular dielectric struts. The scattering performance and insertion loss of metal, glass-fiber-reinforced polyester (GRP), and wire-loaded GRP struts are measured. It is observed that at frequencies below 6 GHz the scattering performance of the loaded strut decreases, but is still superior to that of the metal; at frequencies above 13 GHz the GRP strut's performance is inferior to the metal struts, but the loaded strut's performance is superior. The data reveal that the scattering characteristics of the metal strut are dependent on the angle of incidence and the insertion loss = 2 dB, for the GRP strut the insertion loss = 0.50 dB, and for the loaded strut it = 0.15 dB. It is concluded that the wire-loaded GRP strut is most useful for space-frame radome structures.
- Publication:
-
4th International Conference on Antennas and Propagation (ICAP 85)
- Pub Date:
- May 1985
- Bibcode:
- 1985anpr.conf..153B
- Keywords:
-
- Dielectrics;
- Glass Fiber Reinforced Plastics;
- Horn Antennas;
- Impedance Matching;
- Radome Materials;
- Wire;
- Circular Polarization;
- Electromagnetic Scattering;
- Insertion Loss;
- Mathematical Models;
- Communications and Radar