Image of the Bow-tie.

Modified dipole shapes are often used to obtain wide-band operation without increasing the complexity of the antenna. The bow-tie antenna represents one of the simplest dipole variations, and provides reasonable wide-band performance in spite of its simplicity.

This antenna is popular for frequencies ranging from UHF up to the millimetre wave range, and has also found application in arrays. The bow-tie antenna performance is not sensitive to small parameter variations, improving robustness to manufacturing tolerances. While the bow-tie antenna provides reasonable wide-band performance, this is not a high performance antenna; demanding applications may call for more complex designs. The resisitively loaded bow-tie antenna is a practical candidate for pulse radiation, e.g. for ground penetrating radar (GPR) applications [Shlager et al.].