SMALL-SIZED ULTRA-BROAD-BAND SPIRAL ANTENNA Russian patent published in 2023 - IPC H01Q11/08 

Abstract RU 2790277 C1

FIELD: antenna technology.

SUBSTANCE: invention relates to antenna technology, namely to spiral antennas operating in the range of ultrahigh (UHF) and superhigh (microwave) frequencies as part of antenna systems for various purposes. The antenna contains a combined two-way spiral consisting of connected flat and hemispherical spirals, a dielectric housing with a hemispherical spiral placed on it, a matching symmetrical transformer and metal reflectors of a flat and hemispherical spirals with rings of radio-absorbing materials mounted on them. The dielectric housing is made in the form of a set of flat annular layers lying coaxially on top of each other, and the dielectric permittivity (ε) of the material of the layers increases as it approaches from the flat spiral to the lower radio-absorbing ring and to the reflector of the hemispherical spiral.

EFFECT: increase in the gain in the lower part of the operating frequency range and extension of the antenna ranges to lower frequencies.

1 cl, 1 dwg

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RU 2 790 277 C1

Authors

Kokhnyuk Danil Danilovich

Borovik Igor Aleksandrovich

Selivanova Galina Nikolaevna

Dates

2023-02-15Published

2022-02-10Filed