Abstract
Leaky-wave antennas are dispersive, meaning that the direction of maximum radiation is a function of frequency. This behavior, called “beam squinting effect” can be reduced by introducing a dispersive metamaterial prism. In this letter, a holey metasurface prism is combined with a leaky-wave antenna in gap waveguide technology. The dispersion characteristics of the hole unit cell are studied in order to achieve the reduction of the main beam steering aiming to $\pm 1^{\circ }$ or less variation. A prototype designed at the Ka -band is measured and compared with the simulation results.
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