Vivaldi antenna

Image of the Vivaldi.

The Vivaldi antenna probably got its name from its violin shaped curves. Also known as the exponentially tapered slot antenna (ETSA), this antenna is commonly used in > 3 GHz ultra wideband microwave applications. The Vivaldi was also requested by a number of Antenna Magus users. It has an end-fire radiation pattern and can produce a symmetric beam, in the E- and H- plane, over a wide frequency band.