ANNULAR SLOT ANTENNA Russian patent published in 2017 - IPC H01Q9/04 

FIELD: radio engineering, communication.

SUBSTANCE: under the lower disk structural elements can be placed, above the upper disk structural elements can also be placed, the size of which is smaller than the uppermost disk. According to the invention, the resonator is made in the form of two identical metal disks with a diameter D_D, which are located in parallel surfaces coaxially with the cylinder at a distance h from each other and galvanically connected to it. Under the lower disk structural elements can be placed. Above the upper disk, the structural elements, that are smaller than the upper disk, are located. The disks of the antenna operating in the range of decimeter wavelengths are located on a circular waveguide of a small spacecraft, that feeds a radiating in the centimeter wavelength range mirror antenna, and whose main mirror diameter is D_m≤D_w.

EFFECT: reduction in the overall dimensions of the antenna in an annular slot antenna consisting of a metal cylinder and a resonator that, together with the cylinder, forms an annular radiating slot; it is proposed to carry out the resonator in the form of two identical metal disks that are located in parallel surfaces coaxially with the cylinder and galvanically connected to it.

4 cl, 3 dwg