Abstract
This paper presents a leaky-wave antenna (LWA) based on half-mode substrate integrated waveguide (HMSIW). The proposed LWA consists of transverse and longitudinal slots in one unit cell, by properly adjusting the structure parameters of the slots, open-stopband can be suppressed and hence the proposed LWA features continuous beam scanning from backward, through broadside, and to forward. Additional transverse slots are also implemented to suppress the cross polarization level. Numerical simulations are conducted and the results verify the theory very well.
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