Larbi Setti - Academia.edu (original) (raw)

Papers by Larbi Setti

Research paper thumbnail of A Double Square Monopole Antenna With Dual Band (S band/X band) For Radar And Satellite Communication

Research paper thumbnail of A DFT investigation of lead-free TlSnX<sub>3</sub> (X = Cl, Br, or I) perovskites for potential applications in solar cells and thermoelectric devices

RSC Advances, Dec 31, 2022

In the present study, the Density Functional Theory (DFT) was employed to computationally investi... more In the present study, the Density Functional Theory (DFT) was employed to computationally investigate the potential application of newly developed lead-free perovskites with the formula of TlSnX 3 (X = Cl, Br, or I) as absorbers in the perovskite solar cells and as thermoelectric materials. The Quantum Espresso code was implemented to optimize the structural configuration of the perovskites and to compute a range of their properties, including their elasticity, electronic behavior, optical characteristics, and thermoelectric attributes. The findings indicated that these perovskite materials exhibit both chemical and structural stability and that TlSnBr 3 and TlSnI 3 perovskites possess high dynamic stability. The findings additionally revealed direct (R / R) band gap energy values of 0.87 eV for TlSnCl 3 , 0.52 eV for TlSnBr 3 , and 0.28 eV for TlSnI 3 using the GGA-PBE functional. Further analysis of their elastic properties suggested that these materials are mechanically stable and displayed overall ductile behaviour. They also demonstrated remarkable optical properties, particularly a high absorption coefficient, ranging from 10 5 cm −1 to 10 6 cm −1. Consequently, it is reasonable to infer that these materials exhibit considerable potential for utilization in solar cells. Finally, the evaluation of their thermoelectric properties has revealed the highly promising potential of these materials to be employed in thermoelectric applications.

Research paper thumbnail of Design and Analysis of Frequency Reconfigurable Antenna Loaded Complimentary Split Ring Resonator for Wireless Applications

International Journal For Multidisciplinary Research

This paper presents a multi-band reconfigurable antenna, circular patch antenna loaded with combi... more This paper presents a multi-band reconfigurable antenna, circular patch antenna loaded with combination of rectangular and infinity shape complementary split ring resonator (CSRR). Four slots used for connecting the rectangular with infinity CSRR, where the four PIN diodes loaded in order to achieve reconfigurability. The circular patch has printed in Roger RT/5880 substrate having a dielectric constant of 2.2 within a size 37.35x34.35x1.57. Extraction of permittivity negative of the CSRR is discussed in detail. The proposed antenna can be used in modern and mobile communication devices.

Research paper thumbnail of Vacancy-ordered CsRbGeCl6 and CsRbGeBr6 perovskites as new promising non-toxic materials for photovoltaic applications: A DFT investigation

Chemical physics, May 1, 2024

Research paper thumbnail of Contributo alla conoscenza del genere Haasiella

Research paper thumbnail of A Comparative Study on Machine Learning Algorithms in Emotion State Recognition Using ECG

Advances in Intelligent Systems and Computing, 2014

Human-Computer-Interface (HCI) has become an emerging area of research among the scientific commu... more Human-Computer-Interface (HCI) has become an emerging area of research among the scientific community. The uses of machine learning algorithms are dominating the subject of data mining, to achieve the optimized result in various areas. One such area is related with emotional state classification using bio-electrical signals. The aim of the paper is to investigate the efficacy, efficiency and computational loads of different algorithms scientific comparisons that are used in recognizing emotional state through cardiovascular physiological signals. In this paper, we have used Decision tables, Neural network, C4.5 and Naive Bayes as a subject under study, the classification is done into two domains: High Arousal and Low Arousal.

Research paper thumbnail of PIFA Antenna for future mobile 5G

Proceedings of the 3rd International Conference on Smart City Applications, 2018

The scope of this study is to design and develop a miniature antenna of 5G Generation and a syste... more The scope of this study is to design and develop a miniature antenna of 5G Generation and a system for multiple inputs and outputs (MIMO), we want to make a design of capable antennas for applications of 5G. On this paper is designed a 'T' slotted PIFA antenna to be used on future mobile phones. The size of the antenna is 45mm width and 108mm long.and dielectric con-stant of the substrate 4.4 with FR-4.4. The results analyses the return loss (S11), Fairfield pattern and Fairfield gain. The result is S11=-51.4dB with bandwidth=2.08Ghz.The Fairfield increases 10.2dB work-ing at 30.7 Ghz frequency band. this antenna working the 30.7Ghz frequency band for next generation 5G.

Research paper thumbnail of First-Principles Calculations on Structural, Electronic, Elastic, Optical and Thermoelectric Properties of Thallium Based Chloroperovskites Tlmcl3 (M = Zn and Cd)

Social Science Research Network, 2022

Research paper thumbnail of Ab initio study of structural, elastic, electronic, optical and thermoelectric properties of cubic Ge-based fluoroperovskites AGeF3 (A = K, Rb and Fr)

Solid State Communications, Sep 1, 2023

Research paper thumbnail of First-principles calculations to investigate lead-free double perovskites CsInSbAgX6 (X = Cl, Br and I) for optoelectronic and thermoelectric applications

Computational and Theoretical Chemistry, Sep 1, 2023

Research paper thumbnail of Array Antenna for Wireless Communication 5G

Innovations in Smart Cities Applications Edition 2, 2019

The scope of this study is to design and develop a miniature antenna of 5G Generation and a syste... more The scope of this study is to design and develop a miniature antenna of 5G Generation and a system for multiple inputs and outputs (MIMO); we want to make a design of capable antennas for applications of 5G. On this paper is designed of a 2-element microstrip patch antenna array for dual-band 5G communications. The proposed antenna array is compact with size of 14 × 23 mm 2 at 23.4 GHz and 26.5 and 30.32 GHz, respectively. The dual-band response is achieved by etching a T-shaped slot from the main radiator. It is observed from the results that the proposed array is able to provide resonance for desired frequency bands. Furthermore, the proposed antenna array exhibits Omni-directional radiations and offers an acceptable gain for both frequency bands.

Research paper thumbnail of Design, Analysis, of High Performance Antennas for 5G Communications Analysis Using WCIP

Progress In Electromagnetics Research C

Research paper thumbnail of Comparative investigation of structural, photoluminescence, and magnetic characteristics of MxSn1−xOy nanocomposites

Research paper thumbnail of Investigation of Heavy Thallium Perovskites TlGeX (X= Cl, Br and I) for Optoelectronic and Thermoelectric Applications: A DFT Study

Materials Today Communications

Research paper thumbnail of First-principles calculations to investigate optoelectronic, thermoelectric and elastic properties of novel lead-free halide perovskites CsRbPtX6 (X = Cl, Br and I) compounds for solar cells applications

Physica B: Condensed Matter

Research paper thumbnail of First-principles calculations on the structural evolution of solid fullerene-like CPx

Chemical Physics Letters, 2006

Structural, mechanical and thermodynamic properties, as well as the electronic structures of Cu-T... more Structural, mechanical and thermodynamic properties, as well as the electronic structures of Cu-Ti binary system intermetallic compounds in Ag-Cu-Ti and Cu-Ni-Ti active filler metals were calculated systematically using a first-principles density functional theory (DFT). The calculated formation enthalpy index that all the Cu-Ti intermetallic compounds are thermodynamic stable from degradation to pure metals and the relationship between Cu content (x) and formation enthalpy (y) for tetragonal structure meets the function y=0.572+(−1.005/(0.048*sqrt(3.142/2)))*exp(−0.5*((x−47.167)/13.533)^2). The mechanical properties, including bulk modulus B, shear modulus G, Young's modulus E and Poisson's ratio v, and elastic anisotropy were derived from the elastic data C ij. For the tetragonal Cu-Ti intermetallic compounds, the shear modulus G and Young's modulus E are negatively related to the formation enthalpy, while for the orthorhombic Cu-Ti intermetallic compounds, G and E are positively related to the formation enthalpy. Moreover, the elastic anisotropy increases in the following order: Cu 4 Ti < CuTi 3 < Cu 4 Ti 3 < Cu 2 Ti < CuTi < CuTi 2 < Cu 3 Ti 2. The thermodynamic properties were estimated from the electronic structures and elastic constants simultaneously, and the results found that Cu 4 Ti possess the best thermal conductivity and heat capacity among all the Cu-Ti intermetallic compounds, while CuTi 3 shows the worst ones. Finally, the relationship between electronic structures and physical properties was discussed, and get the inference that for the Cu-Ti intermetallic compounds, the mechanical properties are positively related to the strength of the covalent bond, while the thermophysical properties are influenced by the ionic character and covalent character simultaneously and the ionic character shows the dominant role, therefore, CuTi and Cu 4 Ti 3 show the strongest mechanical properties due to the strongest covalent character, while Cu 4 Ti shows the strongest thermal conductivity and heat capacity due to the strongest ionic character.

Research paper thumbnail of Wideband meta-material-inspired reconfigurable antenna using Infinity Split Ring Resonator

ITM Web of Conferences

In this article, a reconfigurable antenna inspired by the broadband meta-material using the Infin... more In this article, a reconfigurable antenna inspired by the broadband meta-material using the Infinity slotted ring resonator (I-SRR) is designed and computer-based for wireless communication. Antenna takes an infinitely split ring resonator as a radiator powered by a coplanare wave guide (CPW). The procedure for extracting parameters of the meta-material property of the I-SRR is discussed in detail, by which the existence of negative permeability and the new resonance frequencies are verified. The proposed antenna has advantages of simple design, miniaturisation that can be used for wireless mobile communication system.

Research paper thumbnail of Design of flower-shaped high-efficiency compact UWB antenna

ITM Web of Conferences

The present paper describes a novel planar antenna based on the fractal structure designed for Ul... more The present paper describes a novel planar antenna based on the fractal structure designed for Ultra-Wide Band (UWB) applications. The antenna exceeds the UWB band by covering the frequency range between 7.36 and 19.57 GHz with S11 < -10 dB (the fractional bandwidth is 90.68 %) which involves four applications, the C-band (4-8 GHz), the X-band (8-12 GHz), the Ku-band (12-18 GHz) and the K-band (18-26.5 GHz). The low-cost Rogers RO4003C substrate is employed to print the proposed antenna in a small dimension of 12 x 16.9 x 0.81 mm3. This antenna is invented from the shape of a flower with three elliptical leaves. The antenna simulated radiation efficiency is greater than 97 % with an omnidirectional radiation pattern in the E-plane and a bidirectional radiation pattern in the H-plane, across the entire bandwidth. The maximum realized gain of the proposed antenna is about 5.25 dBi. Therefore, the obtained results demonstrated that the flower-shaped antenna is a good candidate for p...

Research paper thumbnail of Wideband and Electronically Tunable Microwave Phase Shifter Using Varactors with Relative Phase Shifts up to 360\ub0

In this work we present a new design of a Wideband Reflection-Type Tunable Phase Shifter (WRTTPS)... more In this work we present a new design of a Wideband Reflection-Type Tunable Phase Shifter (WRTTPS) for smart front-ends applications. The proposed WRTTPS is based on a short-circuited 3- dB/90\ub0 Branch-Line Coupler (BLC), whose characteristics can be electronically tuned using Variable Capacitance Diodes (VCDs) at the reflecting load. The combination of a transmission line in series with two parallel varactors enhances the phase shifter performance, and by adding twocrossed microstrip transmission lines to the conventional BLC the bandwidth improves from 17 to 43.34 %. We experimentally implemented the phase shifter and demonstrated that it produces a wide tunable phase range and full transmission within the experimental uncertainty. This novel topology has a fractional bandwidth of around 43.34 % which is greater than 1 GHz at the central frequency 2.63 GHz and provides a relative phase shifting up to 360\ub0. A good agreement has been shown between simulated and measured results

Research paper thumbnail of A New PIFA Antenna For Future Mobile and Wireless Communication

E3S Web of Conferences

In this work, a new antenna will be presented in the form of F-inverted working at 28Ghz frequenc... more In this work, a new antenna will be presented in the form of F-inverted working at 28Ghz frequency is proposed for 5G wireless com- munications. This antenna has been designed based on an FR-4. with shaped slots on the patch and interdigital slots in the ground for band- width enhancement. The PIFA antenna has an operating frequency of 28 GHz with S11,-39.0885 dB, while the peak gain is 7.85dBi. Therefore, it is suitable for applications of 5G wireless communications with good matching and return loss characteristics. The proposed design model and performance evaluation of the PIFA antenna has been executed by CST Microwave Studio and HFSS.

Research paper thumbnail of A Double Square Monopole Antenna With Dual Band (S band/X band) For Radar And Satellite Communication

Research paper thumbnail of A DFT investigation of lead-free TlSnX<sub>3</sub> (X = Cl, Br, or I) perovskites for potential applications in solar cells and thermoelectric devices

RSC Advances, Dec 31, 2022

In the present study, the Density Functional Theory (DFT) was employed to computationally investi... more In the present study, the Density Functional Theory (DFT) was employed to computationally investigate the potential application of newly developed lead-free perovskites with the formula of TlSnX 3 (X = Cl, Br, or I) as absorbers in the perovskite solar cells and as thermoelectric materials. The Quantum Espresso code was implemented to optimize the structural configuration of the perovskites and to compute a range of their properties, including their elasticity, electronic behavior, optical characteristics, and thermoelectric attributes. The findings indicated that these perovskite materials exhibit both chemical and structural stability and that TlSnBr 3 and TlSnI 3 perovskites possess high dynamic stability. The findings additionally revealed direct (R / R) band gap energy values of 0.87 eV for TlSnCl 3 , 0.52 eV for TlSnBr 3 , and 0.28 eV for TlSnI 3 using the GGA-PBE functional. Further analysis of their elastic properties suggested that these materials are mechanically stable and displayed overall ductile behaviour. They also demonstrated remarkable optical properties, particularly a high absorption coefficient, ranging from 10 5 cm −1 to 10 6 cm −1. Consequently, it is reasonable to infer that these materials exhibit considerable potential for utilization in solar cells. Finally, the evaluation of their thermoelectric properties has revealed the highly promising potential of these materials to be employed in thermoelectric applications.

Research paper thumbnail of Design and Analysis of Frequency Reconfigurable Antenna Loaded Complimentary Split Ring Resonator for Wireless Applications

International Journal For Multidisciplinary Research

This paper presents a multi-band reconfigurable antenna, circular patch antenna loaded with combi... more This paper presents a multi-band reconfigurable antenna, circular patch antenna loaded with combination of rectangular and infinity shape complementary split ring resonator (CSRR). Four slots used for connecting the rectangular with infinity CSRR, where the four PIN diodes loaded in order to achieve reconfigurability. The circular patch has printed in Roger RT/5880 substrate having a dielectric constant of 2.2 within a size 37.35x34.35x1.57. Extraction of permittivity negative of the CSRR is discussed in detail. The proposed antenna can be used in modern and mobile communication devices.

Research paper thumbnail of Vacancy-ordered CsRbGeCl6 and CsRbGeBr6 perovskites as new promising non-toxic materials for photovoltaic applications: A DFT investigation

Chemical physics, May 1, 2024

Research paper thumbnail of Contributo alla conoscenza del genere Haasiella

Research paper thumbnail of A Comparative Study on Machine Learning Algorithms in Emotion State Recognition Using ECG

Advances in Intelligent Systems and Computing, 2014

Human-Computer-Interface (HCI) has become an emerging area of research among the scientific commu... more Human-Computer-Interface (HCI) has become an emerging area of research among the scientific community. The uses of machine learning algorithms are dominating the subject of data mining, to achieve the optimized result in various areas. One such area is related with emotional state classification using bio-electrical signals. The aim of the paper is to investigate the efficacy, efficiency and computational loads of different algorithms scientific comparisons that are used in recognizing emotional state through cardiovascular physiological signals. In this paper, we have used Decision tables, Neural network, C4.5 and Naive Bayes as a subject under study, the classification is done into two domains: High Arousal and Low Arousal.

Research paper thumbnail of PIFA Antenna for future mobile 5G

Proceedings of the 3rd International Conference on Smart City Applications, 2018

The scope of this study is to design and develop a miniature antenna of 5G Generation and a syste... more The scope of this study is to design and develop a miniature antenna of 5G Generation and a system for multiple inputs and outputs (MIMO), we want to make a design of capable antennas for applications of 5G. On this paper is designed a 'T' slotted PIFA antenna to be used on future mobile phones. The size of the antenna is 45mm width and 108mm long.and dielectric con-stant of the substrate 4.4 with FR-4.4. The results analyses the return loss (S11), Fairfield pattern and Fairfield gain. The result is S11=-51.4dB with bandwidth=2.08Ghz.The Fairfield increases 10.2dB work-ing at 30.7 Ghz frequency band. this antenna working the 30.7Ghz frequency band for next generation 5G.

Research paper thumbnail of First-Principles Calculations on Structural, Electronic, Elastic, Optical and Thermoelectric Properties of Thallium Based Chloroperovskites Tlmcl3 (M = Zn and Cd)

Social Science Research Network, 2022

Research paper thumbnail of Ab initio study of structural, elastic, electronic, optical and thermoelectric properties of cubic Ge-based fluoroperovskites AGeF3 (A = K, Rb and Fr)

Solid State Communications, Sep 1, 2023

Research paper thumbnail of First-principles calculations to investigate lead-free double perovskites CsInSbAgX6 (X = Cl, Br and I) for optoelectronic and thermoelectric applications

Computational and Theoretical Chemistry, Sep 1, 2023

Research paper thumbnail of Array Antenna for Wireless Communication 5G

Innovations in Smart Cities Applications Edition 2, 2019

The scope of this study is to design and develop a miniature antenna of 5G Generation and a syste... more The scope of this study is to design and develop a miniature antenna of 5G Generation and a system for multiple inputs and outputs (MIMO); we want to make a design of capable antennas for applications of 5G. On this paper is designed of a 2-element microstrip patch antenna array for dual-band 5G communications. The proposed antenna array is compact with size of 14 × 23 mm 2 at 23.4 GHz and 26.5 and 30.32 GHz, respectively. The dual-band response is achieved by etching a T-shaped slot from the main radiator. It is observed from the results that the proposed array is able to provide resonance for desired frequency bands. Furthermore, the proposed antenna array exhibits Omni-directional radiations and offers an acceptable gain for both frequency bands.

Research paper thumbnail of Design, Analysis, of High Performance Antennas for 5G Communications Analysis Using WCIP

Progress In Electromagnetics Research C

Research paper thumbnail of Comparative investigation of structural, photoluminescence, and magnetic characteristics of MxSn1−xOy nanocomposites

Research paper thumbnail of Investigation of Heavy Thallium Perovskites TlGeX (X= Cl, Br and I) for Optoelectronic and Thermoelectric Applications: A DFT Study

Materials Today Communications

Research paper thumbnail of First-principles calculations to investigate optoelectronic, thermoelectric and elastic properties of novel lead-free halide perovskites CsRbPtX6 (X = Cl, Br and I) compounds for solar cells applications

Physica B: Condensed Matter

Research paper thumbnail of First-principles calculations on the structural evolution of solid fullerene-like CPx

Chemical Physics Letters, 2006

Structural, mechanical and thermodynamic properties, as well as the electronic structures of Cu-T... more Structural, mechanical and thermodynamic properties, as well as the electronic structures of Cu-Ti binary system intermetallic compounds in Ag-Cu-Ti and Cu-Ni-Ti active filler metals were calculated systematically using a first-principles density functional theory (DFT). The calculated formation enthalpy index that all the Cu-Ti intermetallic compounds are thermodynamic stable from degradation to pure metals and the relationship between Cu content (x) and formation enthalpy (y) for tetragonal structure meets the function y=0.572+(−1.005/(0.048*sqrt(3.142/2)))*exp(−0.5*((x−47.167)/13.533)^2). The mechanical properties, including bulk modulus B, shear modulus G, Young's modulus E and Poisson's ratio v, and elastic anisotropy were derived from the elastic data C ij. For the tetragonal Cu-Ti intermetallic compounds, the shear modulus G and Young's modulus E are negatively related to the formation enthalpy, while for the orthorhombic Cu-Ti intermetallic compounds, G and E are positively related to the formation enthalpy. Moreover, the elastic anisotropy increases in the following order: Cu 4 Ti < CuTi 3 < Cu 4 Ti 3 < Cu 2 Ti < CuTi < CuTi 2 < Cu 3 Ti 2. The thermodynamic properties were estimated from the electronic structures and elastic constants simultaneously, and the results found that Cu 4 Ti possess the best thermal conductivity and heat capacity among all the Cu-Ti intermetallic compounds, while CuTi 3 shows the worst ones. Finally, the relationship between electronic structures and physical properties was discussed, and get the inference that for the Cu-Ti intermetallic compounds, the mechanical properties are positively related to the strength of the covalent bond, while the thermophysical properties are influenced by the ionic character and covalent character simultaneously and the ionic character shows the dominant role, therefore, CuTi and Cu 4 Ti 3 show the strongest mechanical properties due to the strongest covalent character, while Cu 4 Ti shows the strongest thermal conductivity and heat capacity due to the strongest ionic character.

Research paper thumbnail of Wideband meta-material-inspired reconfigurable antenna using Infinity Split Ring Resonator

ITM Web of Conferences

In this article, a reconfigurable antenna inspired by the broadband meta-material using the Infin... more In this article, a reconfigurable antenna inspired by the broadband meta-material using the Infinity slotted ring resonator (I-SRR) is designed and computer-based for wireless communication. Antenna takes an infinitely split ring resonator as a radiator powered by a coplanare wave guide (CPW). The procedure for extracting parameters of the meta-material property of the I-SRR is discussed in detail, by which the existence of negative permeability and the new resonance frequencies are verified. The proposed antenna has advantages of simple design, miniaturisation that can be used for wireless mobile communication system.

Research paper thumbnail of Design of flower-shaped high-efficiency compact UWB antenna

ITM Web of Conferences

The present paper describes a novel planar antenna based on the fractal structure designed for Ul... more The present paper describes a novel planar antenna based on the fractal structure designed for Ultra-Wide Band (UWB) applications. The antenna exceeds the UWB band by covering the frequency range between 7.36 and 19.57 GHz with S11 < -10 dB (the fractional bandwidth is 90.68 %) which involves four applications, the C-band (4-8 GHz), the X-band (8-12 GHz), the Ku-band (12-18 GHz) and the K-band (18-26.5 GHz). The low-cost Rogers RO4003C substrate is employed to print the proposed antenna in a small dimension of 12 x 16.9 x 0.81 mm3. This antenna is invented from the shape of a flower with three elliptical leaves. The antenna simulated radiation efficiency is greater than 97 % with an omnidirectional radiation pattern in the E-plane and a bidirectional radiation pattern in the H-plane, across the entire bandwidth. The maximum realized gain of the proposed antenna is about 5.25 dBi. Therefore, the obtained results demonstrated that the flower-shaped antenna is a good candidate for p...

Research paper thumbnail of Wideband and Electronically Tunable Microwave Phase Shifter Using Varactors with Relative Phase Shifts up to 360\ub0

In this work we present a new design of a Wideband Reflection-Type Tunable Phase Shifter (WRTTPS)... more In this work we present a new design of a Wideband Reflection-Type Tunable Phase Shifter (WRTTPS) for smart front-ends applications. The proposed WRTTPS is based on a short-circuited 3- dB/90\ub0 Branch-Line Coupler (BLC), whose characteristics can be electronically tuned using Variable Capacitance Diodes (VCDs) at the reflecting load. The combination of a transmission line in series with two parallel varactors enhances the phase shifter performance, and by adding twocrossed microstrip transmission lines to the conventional BLC the bandwidth improves from 17 to 43.34 %. We experimentally implemented the phase shifter and demonstrated that it produces a wide tunable phase range and full transmission within the experimental uncertainty. This novel topology has a fractional bandwidth of around 43.34 % which is greater than 1 GHz at the central frequency 2.63 GHz and provides a relative phase shifting up to 360\ub0. A good agreement has been shown between simulated and measured results

Research paper thumbnail of A New PIFA Antenna For Future Mobile and Wireless Communication

E3S Web of Conferences

In this work, a new antenna will be presented in the form of F-inverted working at 28Ghz frequenc... more In this work, a new antenna will be presented in the form of F-inverted working at 28Ghz frequency is proposed for 5G wireless com- munications. This antenna has been designed based on an FR-4. with shaped slots on the patch and interdigital slots in the ground for band- width enhancement. The PIFA antenna has an operating frequency of 28 GHz with S11,-39.0885 dB, while the peak gain is 7.85dBi. Therefore, it is suitable for applications of 5G wireless communications with good matching and return loss characteristics. The proposed design model and performance evaluation of the PIFA antenna has been executed by CST Microwave Studio and HFSS.