Multielement patch antenna for K-band

The construction and parameters of the multielement patch antenna have been presented in the paper. The planar antenna for K-band has been designed. The antenna structure on the patch radiation elements was leaned. Radiation elements in two array configuration: rectangular 4×4 and circular 24-elements have been configured. The additional elements causes better directional parameters of the array. All radiation elements work inphase. Presented antennas were physically realized in Microwave Division of MUT. The antennas construction base on the simulation results, which in dedicated basing on FEM method software have been made. Real antennas measurements results confirmate simulation results. The antenna have 5×5 cm total dimentions for rectangular shape and 7 cm diameter for circular shape. Both constructions on the Rogers RT5880, 0,79 mm height substrate have been made. The antenna has moderate gain 16 dBi for 300 MHz bandwidth for 18 GHz center frequency. Simulation results as well as measurements results in form of directional characteristics for E and H planewave have been presented in the paper.

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