HYBRID SLIT ANTENNA Russian patent published in 2014 - IPC H01Q9/28 H01Q1/38 

FIELD: radio engineering, communication.

SUBSTANCE: hybrid slit antenna has a dielectric substrate, a metal shield having a slot line which divides the metal shield into two identical parts and a supply line, the slot line being a straight portion with length l, which further expands according to the exponential law y=±0.1e8.42x; in one of the parts of the metal shield, parallel to the axis of the slot line, there is a rectangular groove which, together with the straight portion of the slot line and the metal shield, forms a three-conductor strip line, a ferrite ring mounted at the end of the rectangular groove, while touching the outer circle of the outline of the slot line and the end of the rectangular groove, wherein the length l of the straight portion of the slot line is selected not shorter than the diameter D of the ferrite ring, i.e., l>D, and the ends of the expanding slot line are connected to cone-shaped symmetric electric vibrators with a vertex angle α=20°, placed on a dielectric substrate with ε=10 with arm span $$L=\mathrm{0,4}\sqrt{\frac{2}{\epsilon +1}}\lambda ,$$ where λ is the maximum wavelength of the operating range.

EFFECT: wider operating frequency range of the antenna.

2 dwg