Vivaldi Antenna

These results are from the paper: A. E. Yilmaz, Z. Lou, J. M. Jin, and E. Michielssen,”A single boundary, implicit, and FFT-accelerated time-domain finite element-boundary integral solver,” IEEE Trans. Antennas Propagat., vol. 55, no. 5, pp. 1382-1397, May 2007. The plots show the x-z plane radiation pattern and the reflection coefficient at the input port. All dimensions are in mm.