Most antennas with wideband range and high directionality are three dimensional in shape, with spiral and bicone antenna geometries as notably useful and common examples. A three dimensional shape makes antennas non-ideal for aerospace applications. Trivec Avant asked the Clinic team to develop a planar, ultra-wideband antenna (225MHz-2000MHz) with return loss below -5dB and directivity at azimuth above -6dBi across the entire frequency band.