CIRCULAR WAVEGUIDE ANTENNA AND CIRCULAR WAVEGUIDE ARRAY ANTENNA

摘要

A circular waveguide antenna and a circular waveguide array antenna are provided to reduce a manufacturing cost, and to improve reflective loss characteristics and enhance a radiative gain. A circular waveguide antenna includes a feeding part and a radiating aperture(10). The feeding part is formed to feed electromagnetic waves to a side of a conical horn(11). The radiating aperture is formed to radiate the electromagnetic waves. A dielectric sheet(12) includes a conductive foil. The conical horn is electrically connected to the dielectric sheet. A dielectric sheet(13) is formed between the dielectric sheet and a strip line(14). The strip line is used for transmitting high frequency signals and is extended to the inside of the conical horn.