Ali Abdulhadi Al-Azza
@siu.edu
Department of Electrical and Computer Engineering
Southern Illinois University Carbondale
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Samia Shakir and Ali Al-Azza
University of Basrah - College of Engineering
Animating human face presents interesting challenges because of its familiarity as the face is the part utilized to recognize individuals. This paper reviewed the approaches used in facial modeling and animation and described their strengths and weaknesses. Realistic face animation of computer graphic models of human faces can be hard to achieve as a result of the many details that should be approximated in producing realistic facial expressions. Many methods have been researched to create more and more accurate animations that can efficiently represent human faces. We described the techniques that have been utilized to produce realistic facial animation. In this survey, we roughly categorized the facial modeling and animation approach into the following classes: blendshape or shape interpolation, parameterizations, facial action coding system-based approaches, moving pictures experts group-4 facial animation, physics-based muscle modeling, performance driven facial animation, visual speech animation.
Ali A. Al-Azza, Nuhad A. Malalla, Mohamed M. Morsy, and Frances J. Harackiewicz
IEEE
A low-profile compact antenna with triple band operation for wireless security, WIMAX, and WLAN applications is proposed in this paper. The antenna has a simple structure with an overall area of 40 x 40 mm2. Analysis and simulation of the proposed antenna is done by using the full 3D electromagnetic simulation software CST STUDIO SUITE. The performance of the proposed antenna was evaluated by using the reflection coefficient, the radiation pattern, and the gain.
Ali A. Al-Azza, Nuhad A. Malalla, Mohamed M. Morsy, Hemachandra R. Gorla, and Frances J. Harackiewicz
IEEE
An ultra-wideband antenna is proposed in this paper. The proposed antenna has been optimized by using the covariance matrix adaptation evolutionary strategy optimization method to achieve the impedance bandwidth requirement of the ultra-wideband systems. The antenna has a compact size of 40 × 40 mm2. 3D electromagnetic simulation software, CST STUDIO SUITE is used to simulate the proposed antenna. The measured results show that the antenna provides a wide bandwidth of 118.5% (3.07 −12 GHz).
Ali A. Al-Azza, Nuhad Malalla, Frances J. Harackiewicz, and Kiyun Han
EMW Publishing
Conical and cylindrical dielectric resonator elements are vertically stacked and excited by a simple coaxial monopole. Compared to all earlier configurations, the proposed geometry significantly improves the impedance bandwidth. The ultrawideband response is enhanced due to the multiple resonances occurring by the suggested hybrid antenna. The footprint area of the antenna is only 63.6 mm2 or 25.44×10−3λ2o at the lowest operating frequency. The performance of the antenna is verified experimentally and numerically. Presented results show that the proposed hybrid monopole-DRA has a measured impedance bandwidth up to 148.6% (S11 < −10 dB) along with consistent monopole-like radiation patterns and peak gain of 7.14 dBi. With such properties, the proposed hybrid monopoleDRA can be used in different ultra-wideband wireless applications and as wideband electromagnetic interference (EMI) sensors.
Ali A. Al-Azza, Ammar A. Al-Jodah, and Frances J. Harackiewicz
IEEE
Introducing and using the spider monkey optimization (SMO) as an optimization technique for the electromagnetics and antenna community is the main goal of this paper. The SMO is a new swarm intelligence technique which models the foraging behavior of spider monkeys. To show the efficiency of the SMO, different examples are presented in this work. The optimization procedure is used to synthesize the array factor of a linear antenna array and to optimally design a coaxial feeding patch antenna for wireless applications. The obtained results show that SMO is efficient in reaching the optimum solutions with few number of experiments.
Ali Abdulhadi Noaman Al-Azza and Frances J. Harackiewicz
IEEE
A dielectric loaded antenna is proposed in this paper for wireless communication applications. The proposed antenna has been optimized by using the covariance matrix adaptation evolutionary strategy (CMA-ES) optimization method to achieve the impedance bandwidth requirement of the upper band of wireless local area network (WLAN) band systems, and to introduce nulls in the radiation pattern at the undesired directions for interference cancellation purposes. The antenna has a compact size of 40 × 40 mm2. 3D electromagnetic simulation software, CST STUDIO SUITE is used to simulate the proposed antenna. To validate the performance of the proposed antenna, the antenna is fabricated and tested. A good agreement between simulation and measurement is obtained.
Ali A. Al-Azza, Ammar A. Al-Jodah, and Frances J. Harackiewicz
Institute of Electrical and Electronics Engineers (IEEE)
The aim of this letter is to introduce and use the spider monkey optimization (SMO) as an optimization technique for the electromagnetics and antenna communities. The SMO is a new swarm intelligence technique that models the foraging behavior of spider monkeys. To show the efficiency of the SMO, different examples are presented, and the results are compared to the results obtained using other popular optimization techniques. The optimization procedure is used to synthesize the array factor of a linear antenna array and to optimally design an E-shaped patch antenna for wireless applications. By comparing to traditional optimization techniques reported in the literature, it is evident that SMO is efficient in reaching the optimum solutions with less number of experiments .
Ali A. Al-Azza, Frances J. Harackiewicz, and Hemachandra Reddy Gorla
EMW Publishing
Covariance matrix adaptation evolutionary strategy algorithm is applied to optimize a dielectric loaded microstrip patch antenna. The optimization process performance is enhanced by not considering the symmetrical factor of the antenna structure. The antenna is optimized to work for IEEE 802.11a WLAN 5-6 GHz band. Experimental measurements have also been performed to validate the performance of the proposed antenna.
Ali A. Al-Azza, Frances J. Harackiewicz, and Hemachandra Gorla
EMW Publishing
A new very compact open slot antenna for wireless communication systems application has been designed and fabricated. With antenna overall dimension of 9.2 × 9. 8m m 2 , the proposed design can be used in many modern communication devices with size constraints. Experimental measurements have also been performed to validate the performance of the proposed antenna. The measured results show that the antenna provides a wide bandwidth of 48% (5-8.17 GHz) with an average size reduction of about 88% with respect to a conventional microstrip patch antenna.
Ali Abdulhadi Noaman Al-Azza and Frances J. Harackiewicz
IEEE
A new wideband microstrip antenna is proposed in this paper. The proposed antenna has a compact size of 20×16 mm2 and an impedance bandwidth of 3.5 GHz to 18 GHz. The full 3D electromagnetic simulation software CST STUDIO SUITE was used to simulate and analyze the proposed antenna. The reflection coefficient, the radiation pattern, and the gain are used to demonstrate the performance of the proposed antenna. The proposed antenna is fabricated to verify the results.
Ali Abdulhadi Noaman Al-Azza and Frances J. Harackiewicz
IEEE
An ultra wideband hybrid dielectric resonator antenna (DRA) is presented in this paper. The aim from the design process is to get an ultra wide impedance bandwidth with stable radiation pattern through the operating frequency. CST simulation software is used to obtain the entire simulation results. The results illustrate that the proposed DRA has a 10 dB impedance bandwidth of 148.4 % from 6.2 GHz to more than 42 GHz.
Ali Abdulhadi Noaman Al-Azza and Frances J. Harackiewicz
IEEE
This paper proposes a new ultra wideband rectangular dielectric resonator antenna. The proposed antenna has compact size of 20×20 mm2 and a bandwidth of 8 GHz to more than 30 GHz. The full 3D electromagnetic simulation software CST STUDIO SUITE is used to simulate and analyze the proposed antenna. The reflection coefficient, the radiation pattern, and the gain are used to demonstrate the performance of the proposed antenna.
Ali Abdulhadi Noaman Al-Azza and Frances J. Harackiewicz
IEEE
This paper introduces an efficient technique to optimally design a dielectric resonator antenna (DRA). This technique is based on using the real coded genetic algorithm (RCGA). RCGA is used to get the desired resonant frequencies by finding the optimal configuration of the antenna. To show the efficiency of this technique, three different optimization cases are considered and simulated by using the electromagnetic simulation software CST STUDIO SUITE. To verify the results, one of the cases is fabricated and compared with the simulated one.
Ali Abdulhadi Noaman Al-Azza and Frances J. Harackiewicz
IEEE
In this paper, a novel ultra wideband compact size hybrid rectangular step dielectric resonator antenna (DRA) is proposed. The aim from the design process is to get an ultra wide impedance bandwidth with stable radiation pattern through the operating frequency. The entire simulation results have been obtained by using CST simulation software. Measured results illustrate that the proposed DRA has a 10 dB impedance bandwidth of 122.58% from 6 GHz to 25 GHz.