Phase controlled three=dimensional antenna - uses acrylic concentric rings and plates to align multiple dipoles and feeders

摘要

The phase controlled antenna comprises a large number of separated single conductors (1), typically dipoles, on the inside of the sphere, fed by perpendicular feeders (2). The feeders (2) are axially connected to a ground plate (3). Above the plate (3) are spacer rings (4) and plates (5), both of dielectric material, stacked in layers, which form ventilation cavities (6). The plates are aligned so that bore cavities (7) are formed to accommodate conductors (1) and feeders (2). Preferably, the spacer rings (4) and the dielectric plates (5) have the same outside diameter, and are made from acrylic resin. USE/ADVANTAGE - Radar antennas: stable, precise construction.