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A 2D IIR spatially-bandpass antenna beamformer on a 65 nm Achronix SPD60 asynchronous FPGA

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3 Author(s)
Joshi, R.M. ; Dept. of Electr. & Comput. Eng., Univ. of Akron, Akron, OH, USA ; Madanayake, A. ; Bruton, L.T.

An asynchronous implementation of spatially-bandpass 2D IIR frequency-planar digital filter is investigated for obtaining high-speed and low-power digital filter circuits compared to the synchronous implementations. The reduced power consumption and higher speed of operation of the asynchronous architecture has emerging applications in radio-astronomy, space science, radar, and wireless communications. The direct-form-I realization of a 2nd-order spatially-bandpass 2D IIR filter is extended to a clock-free asynchronous implementation using asynchronous FPGAs from Achronix Semiconductor. The experimental results presented here show that the speed of operation of the asynchronous implementation of the spatially-bandpass 2D IIR filter, in direct-form-I, is 31% higher than its synchronous counterpart, for a look-ahead of 4th-order.

Published in:

Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on

Date of Conference:

7-10 Aug. 2011