Slotted Waveguide Antenna Array in X-Band With Low Level of Side Lobes

The paper presents the results of calculating the parameters, designing and experimental research of the developed model of a resonant waveguide slot array antenna array of the X-band frequency with a low level of side lobes. A technique is presented for calculating the topology of slots in the waveguide slot array antenna to achieve the required distribution over the aperture, considering the effects of the mutual coupling of slots in higher waveguide modes and external space. The modeling of a waveguide-slotted array was conducted in the software package for three-dimensional electromagnetic modeling and development of high-frequency radio-electronic and antenna devices - ANSYS HFSS. The results of measurements of the radiation pattern of the waveguide slot array antenna sample in the X-frequency range are presented.