| 摘要 |
FIELD: microwave antenna engineering. ^ SUBSTANCE: proposed heavy-power feed that can be used as primary feed for mirror and lens antennas of mainly large optically excited phased antenna arrays and is characterized in equal number of directivity patterns in both planes and in reduced level of side lobes in E pane has pyramidal horn with flange that mounts device for horn sealing. Horn accommodates even number of conducting barriers installed perpendicular to vector E and disposed either side of longitudinal axis of horn so that they form central and side sections. Horn sealing device is assembled of internal and external insulating plates of small tgdelta and thickness equal to half-wavelength in insulator; they are disposed in parallel to one another and spaced quarter-wavelength apart in air-insulator medium. Internal insulating plate is mounted on pyramidal horn flange through sealing gasket and tightly fitted thereto by means of metal frame and fastening members; external insulating plate is rigidly fixed to metal frame and is held in mechanical contact with internal dielectric plate. ^ EFFECT: enhanced electric strength of feed. ^ 11 cl, 5 dwg |
