Double exciter for reflector antenna - has dielectric region with low dielectric constant

摘要

The directional radio antenna is formed with two grooved horn (1,2) with double excitation. Each horn has dielectric inserts (3,4) that are angled in the permeable region (5). The boundary surfaces (6,7) formed as flat angled surfaces. The angle (8) of the surfaces is selected to obtain the required compensating effect. In order that unwanted changes in the emission characteristic is avoided, the dielectric foam material (5) is selected with a dielectric constant of less than 1.5. ADVANTAGE - Compensates for disturbance effects.