DUAL-BAND VERTICAL ANTENNA Russian patent published in 2019 - IPC H01Q5/48 

FIELD: antenna equipment.

SUBSTANCE: invention relates to ultra-wideband antennas with vertical polarization and circular pattern in horizontal plane. Dual-band vertical antenna comprises a base and a radiating portion associated therewith, comprising two symmetrical vertical dipoles, which are electrically conductive D₁ diameters and length L₁, and a matching device, through which each of the dipoles is connected to the supply line. Antenna is equipped with two additional symmetrical vertical dipoles, each of which is connected to supply line through said matching device, which is a broadband transformer. One of said dipoles closest to the base is formed by an outer pipe of diameter D₂, made of fiberglass, in which the corresponding inner pipe with diameter D₁ is coaxially located, made of fiberglass. Second dipole is formed by bushing with diameter D₂, made from polyamide material, in which the second pipe with diameter D₁ is coaxially located. Outer surface of inner pipe by length L₁, and outer surface of outer pipe and sleeve by length L₂<L₁ coated with a layer of electroconductive adhesive material, on top of which a layer of copper foil is applied.

EFFECT: invention widens the operating frequency range of the antenna and reduces weight thereof while maintaining strength and stability of the structure and ease of manufacture.

1 cl, 5 dwg