FIELD: antennas operating at microwave and higher frequencies. SUBSTANCE: antenna has cylindrical ceramic core 12 whose relative dielectric constant equals at least 5. Three-dimensional structure of radiating elements built up of helical antenna radiating elements 10A through 10D mounted on cylindrical surface of core 12 and used to interconnect radial elements 10AR through 10DR located on distant end surface 12D of core is formed by conducting tracks deposited directly on core surface. Elements mounted on distant surface of core are connected to feeder structure running in axial direction and mounted in lined channel 14 of core 12. Antenna radiating elements are connected through plated coaxial screen 20 that covers part of core 12 closest to point of connection which forms, together with feeder structure, built-in balancing device for matching with unbalanced feeder. EFFECT: reduced size and stiffness of antenna; improved electrical stability. 49 cl, 6 dwg
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Authors
Dates
2001-08-27—Published
1995-08-21—Filed