Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters

Figure 8

Relative error in 𝐻(𝑧₁,𝑧₂) with respect to the respective coefficients of 2nd-order and 3rd-order plane-wave filters.

(a) Relative error in 𝐻 of 2nd-order filter for 𝑊_𝑐=20

(b) Relative error in 𝐻 of 2nd-order filter for 𝑊_𝑐=15

(c) Relative error in 𝐻 of 3rd-order filter for 𝑊_𝑐=23

(d) Relative error in 𝐻 of 3rd-order filter for 𝑊_𝑐=19