ULTRA-WIDEBAND DUAL-PORT ANTENNA Russian patent published in 2017 - IPC H01Q5/00 

FIELD: radio engineering, communication.

SUBSTANCE: antenna is formed by electrically separate radiating elements for each of the two subbands. For the first subband, the first coaxial cable (CC) is connected through an impedance transformer to the lower edge of the lower radiating cylindrical element (RCE). For the second subband, the second CC is passed inside the lower RCE and is fed to the middle RCE made in the form of an inverted glass. The central core of the second CC is drawn through the hole in the bottom of the inverted glass, and its braid is connected to the bottom of the inverted glass. The upper RCE is made in the form of a glass with a bottom facing the bottom of an inverted glass of the middle RCE. The central core of the second CC is connected to the glass bottom of the upper RCE equipped with the first and second wires located inside the upper RCE. The first wire is connected to the glass bottom of the upper RCE with one end, and its other end is led out. The second wire is connected through the hole in the glass bottom of the upper RCE to the bottom of the inverted glass of the middle RCE with one end, and its other end is led out. An asymmetrical dipole (AD), an inductance coil (IC) and a capacitor (C) are introduced into the device. Some of the outputs of the IC and C are interconnected and connected to the AD. The other terminal of the IC is connected to the outwardly terminated end of the first wire, and the other C terminal is connected to the outwardly terminated end of the second wire.

EFFECT: increased frequency bandwidth, improved shape of the radiation pattern in the upper frequency range, increased frequency ratio, increased gain factor.

6 cl, 1 dwg