Research Article
Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters
Figure 20
Contour plots of beam filter response in log scale for (a) ideal 2nd-order beam filter, (b) 2nd-order beam filter for , (c) 2nd-order beam filter for , (d) ideal 3rd-order beam filter, (e) 3rd-order beam filter for , (f) 3rd-order beam filter for .