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All Journal Indonesian Journal of Electrical Engineering and Computer Science
Isam Salah Hameed
University of Diyala

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A novel pipelined carry adder design based on half adder Salah Hasan Alkurwy; Isam Salah Hameed
Indonesian Journal of Electrical Engineering and Computer Science Vol 25, No 2: February 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v25.i2.pp763-770

Abstract

A new design of binary parallel adder circuit is presented in this paper. The pipeline technique is applied to implement a group of a half adder (HA) blocks to architect the proposed adder. The pipelined carry adder (PCA) method is suitable for carrying out the desired adder by using the HA circuits of XOR and AND gates. The applied technique reduces the critical path delay by 27% compared with the ripple carry adder (RCA) and relatively lowers logic gates by 55% compared with the carry look-ahead adder (CLA). The coded design of the proposed circuit is implemented and simulated on the Cyclone IV FPGA kit platform. Results show that the circuit needs a 7.69 ƞ Sec delay time to provide the output values. The suggested PCA circuit is more attractive than the conventional ripple carry adder for future electronic applications. 
Investigation into the microwave power absorption in tissues Raad Hamdan Thaher; Heba Hadi Ali; Isam Salah Hameed
Indonesian Journal of Electrical Engineering and Computer Science Vol 16, No 3: December 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v16.i3.pp1257-1264

Abstract

In this paper, the behavior of different tissues to microwave signal is presented. Beef, lamp, and fat were taken as tissue samples. The three types of tissues were taken in three different cases as soaked, normal, and dried. Moreover, each individual sample was prepared in five thickness as 1mm, 2mm, 3mm, 4mm and 5mm in the x-band frequency. The objectives of this paper were discussed to determine the power absorption when each sample is tested. The experimental results showed the soaked meat as the most power absorbing state when compared to the other cases of the normal and dried samples for the same thickness value.  It has been found that the microwave power absorption is directly proportional to the thickness. Besides, the relationship between the microwave power absorption and the distance between transmitting and receiving antenna was also taken in consideration. It was found that as long as the tested sample is far away from the transmitter, the attenuation of the transmitted energy increases. With the aid of two techniques represented by an insertion transmission method and free-space transmission method, this paper presented an insight about the relation between the (moisture, distance, and thickness) and the microwave power absorption.
Co-Authors Heba Hadi Ali Raad Hamdan Thaher Salah Hasan Alkurwy