ON THE DESIGN AND FPGA IMPLEMENTATION OF REAL-TIME SCANNED-ARRAY 2D FREQUENCY-PLANAR BEAM FILTERS (FriAmPO2)

Author(s) : Arjuna Madanayake (University of Calgary, Canada) Leonard Bruton (University of Calgary, Canada)

Abstract : We propose a field programmable gate array (FPGA) circuit-based 2D IIR single-chip spatio-temporal filter having low hardware complexity for the purpose of processing 2D scanned-array sampled signals. The filter is suitable for the selective real-time filtering of broadband spatio-temporal plane waves by employing low-order highly-selective 2D frequency-planar beam-shaped filter passbands. The design and hardware co-simulation is described for a Xilinx FPGA chip. Employing a linear array of N sensors, temporal sampling rates up to MHz per sensor are feasible using one A/D converter and a FPGA chip, clocked at MHz. A directional audio example is given for CD quality propagating sound waves.

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