Viduneth Ariyarathna

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A current-mode CMOS design is proposed for realizing receive mode multi-beams in the analog domain using a novel DFT approximation. High-bandwidth CMOS RF transistors are employed in low-voltage current mirrors to achieve bandwidths exceeding 4 GHz with good beam fidelity. Current mirrors realize the coefficients of the considered DFT approximation, which(More)
The synthesis of approximately frequency independent array factors at low hardware complexity using 2-D infinite impulse response (IIR) digital beam filters and nested uniform linear arrays is proposed. The array is designed to have multiple levels of nesting. Each level consists of a uniform linear array (ULA) covering a separate subband of the incident(More)
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