Browsing by Author "Amer, Fathy Z"

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    Design Of Area Efficient And Low Power 4-Bit Multiplier Based On Full-swing GDI technique
    (IEEE, 2019) Albadry, Omnia Ali; El-Bendary, M. A. Mohamed; Amer, Fathy Z; Singy, Said M
    This paper presents a design of 4-bit multiplier using full adder cell based on full swing gate diffusion input technique. The proposed adder design consists of 18 transistors and compared with different logic styles for full adders through cadence virtuoso simulation based on TSMC 65nm models at a supply voltage of 1v and frequency 250MHz. The simulation results showed that the proposed full adder design dissipates low power while improving the area and provides full swing output voltage among all the designs taken for comparison. The proposed full adder used to design Array, Barun and Baugh Wooley multipliers, Energy and Transistor count of these multipliers improved compared to CMOS.
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    A proposed technique for power extraction from acoustic energy scavenging
    (Taylor & Francis, 2018) Selim, Kyrillos K; Haggag, Ayman; Amer, Fathy Z; Rady, Wael A; El-Garhy, Ahmed M
    In this study, converting acoustic to electric energy was achieved via the Disk Jockey (DJ) model TG5000, which worked as a noise source, and the piezoelectric model 7BB-41-2, which worked as a transducer. We proposed different states of piezoelectric transducer's mounting on DJ and examined the results to determine the optimum state for maximization of the converted power. We proposed a technique which comprises four stages, and each stage is composed of a piezoelectric transducer followed by a voltage multiplier. The outputs of the four stages were connected in parallel, and these transducers were mounted via their bodies on the slim diaphragm of the acoustic focusing tube. The results indicated that the maximum converted power values were 1.225 mW with a load resistor of 10 k for one stage, 1.089 mW with a load resistor of 10 k for two stages, 1.682 mW with a load resistor of 5 k for three stages, and 5.891mW with a load resistor of 2.2 k for four stages at a sound intensity level of 85 dB and sound wave frequency of 2.1 kHz.