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In FPGA embedded systems, designers usually have to make a compromise between numerical precision and logical resources. Scientific computations in particular, usually require highly accurate calculations and are computing intensive. In this context, a designer is left with the task of implementing several arithmetic cores for parallel processing while(More)
In order to avoid the computational complexities involved in analyzing reconfigurable antennas, neural networks are used as an alternate approach. The neural network finds the location of the operational frequency bands for any combination of switches connecting different radiating elements. The network outputs are compared with the experimentally measured(More)
This paper addresses the functional reliability and the complexity of reconfigurable antennas using graph models. The correlation between complexity and reliability for any given reconfigurable antenna is defined. Two methods are proposed to reduce failures and improve the reliability of reconfigurable antennas. The failures are caused by the(More)
The following paper describes the results of ionizing dose rate investigations into upset, supply photocurrent, latch-up, and burnout susceptibility of the Xilinx Virtex IV XC4VFX12. All investigations were performed on a commercial version of the device. The maximum no-upset dose rate was 2.8times10<sup>8</sup> rad(Si)/s. Photocurrent amplitudes as a(More)