“…In last decades, researchers have put significant efforts and proposed variety of horn geometries for many practical applications [3]. A few important examples are Potter horn [4], matched-feed horn [5,6], corrugated horn [7], ridged horn [8], hybrid corrugated horn [9,10], dielectric horn [11,12], metamaterial based horn [13], Gaussian profiled horn [14], spline profiled horn [15], etc. All such horn configurations have their merits and demerits in terms of performance, fabrication complexity, cost, etc.…”