To attain adequate penetration depth, through wall radar antennas need low operating frequency, compact design, and high gain. This work presents a proposal for an ultra-wideband and low-cost magneto-electric (ME) dipole antenna that operates in the S-band and is designed for through-wall radar applications. A method for reducing the size of a structure is obtained by combining a Minkowski-like fractal ground with a folded shorted patch. This combination increases the route of the surface equivalent current.