Vivaldi

A specific type of planar antenna known for its characteristic shape, often likened to the flared bell of a trumpet or the curves of a violin, hence its name (after the Italian composer, Vivaldi). It's a type of endfire antenna, meaning it radiates in the same direction as the alignment of the antenna. The Vivaldi antenna is also known as a Vivaldi notch or tapered slot antenna, as the radiating element is a tapered slot on a flat sheet of metal or dielectric, gradually widening towards one end. This tapering allows the antenna to cover a wide range of frequencies, resulting in an ultra-wideband performance. Vivaldi antennas are often used in applications requiring broad frequency coverage, high gain, and good pulse response, such as radar systems, wireless communication, and electronic warfare.