Multidimensional-DSP Beamformers Using the ROACH-2 FPGA Platform
AbstractAntenna array-based multi-dimensional infinite-impulse response (IIR) digital beamformers are employed in a multitude of radio frequency (RF) applications ranging from electronically-scanned radar, radio telescopes, long-range detection and target tracking. A method to design 3D IIR beam filters using 2D IIR beam filters is described. A cascaded 2D IIR beam filter architecture is proposed based on systolic array architecture as an alternative for an existing radar application. Differential-form transfer function and polyphase structures are employed in the design to gain an increase in the speed of operation to gigahertz range. The feasibility of practical implementation of a 4-phase polyphase 2D IIR beam filter is explored. A digital hardware prototype is designed, implemented and tested using a ROACH-2 Field Programmable Gate Array (FPGA) platform fitted with a Xilinx Virtex-6 SX475T FPGA chip and multi-input analog-to-digital converters (ADC) boards set to a maximum sampling rate of 960 MHz. The article describes a method to build a 3D IIR beamformer using polyphase structures. A comparison of technical specifications of an existing radar application based on phased-array and the proposed 3D IIR beamformer is also explained to illustrate the proposed method to be a better alternative for such applications. View Full-Text
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Seneviratne, V.; Madanayake, A.; Bruton, L.T. Multidimensional-DSP Beamformers Using the ROACH-2 FPGA Platform. Electronics 2017, 6, 49.
Seneviratne V, Madanayake A, Bruton LT. Multidimensional-DSP Beamformers Using the ROACH-2 FPGA Platform. Electronics. 2017; 6(3):49.Chicago/Turabian Style
Seneviratne, Vishwa; Madanayake, Arjuna; Bruton, Len T. 2017. "Multidimensional-DSP Beamformers Using the ROACH-2 FPGA Platform." Electronics 6, no. 3: 49.
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