Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157282
M. Labidi, F. Choubani
Résumé-The goal of this work is to present a new structure of metamaterial antenna based on split ring resonator which is optimized to operate at 5G band. The proposed antenna is characterized by a compact size of $0.5lambda_{0}times 0.39lambda_{0}$, with a −10 dB wide bandwidth of 4.36 GHz (15.57%) from 27 GHz to 31.36 GHz. The proposed configuration achieves a gain and a directivity enhancement to be 3.69 dB and 5.7 dB respectively. Moreover, a new technique is detailed to make our antenna reconfigurable and a frequency shift can be controlled by changing the slot position.
{"title":"New Design of Metamaterial Antenna for 5G Applications","authors":"M. Labidi, F. Choubani","doi":"10.1109/mms48040.2019.9157282","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157282","url":null,"abstract":"Résumé-The goal of this work is to present a new structure of metamaterial antenna based on split ring resonator which is optimized to operate at 5G band. The proposed antenna is characterized by a compact size of $0.5lambda_{0}times 0.39lambda_{0}$, with a −10 dB wide bandwidth of 4.36 GHz (15.57%) from 27 GHz to 31.36 GHz. The proposed configuration achieves a gain and a directivity enhancement to be 3.69 dB and 5.7 dB respectively. Moreover, a new technique is detailed to make our antenna reconfigurable and a frequency shift can be controlled by changing the slot position.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"59 34","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120808514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157276
F. Dhaouadi, J. Ribero, S. Beldi, R. Bedira, A. Gharsallah
In this work, we present a textile, flexible and compact antenna intended for body centric wireless communication (BCWC). The design is based on a High Impedance Surface (HIS) as substrates for dipoles operating in the Initial, Scientific and Medical (ISM) 2.5 GHz band. We demonstrate that the HIS can be used without any dipole on top with a single feed point as low-profile antennas. We analyze two possible feeding mechanisms of an HIS of dogbone-shaped conductors. As a result, the proposed antenna does not change significantly when in close proximity of the body: the HIS is utilized to isolate the user's body from undesired electromagnetic radiation. We show that broadside gain and SAR values of the proposed design compared to conventional dipole antenna. Furthermore, it offers a compact and low profile solution which makes it a good candidate for the wearable WBAN application.
{"title":"Synthesis of a Compact High Impedance Surface Antenna Without Dipole on Top for BCWC","authors":"F. Dhaouadi, J. Ribero, S. Beldi, R. Bedira, A. Gharsallah","doi":"10.1109/mms48040.2019.9157276","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157276","url":null,"abstract":"In this work, we present a textile, flexible and compact antenna intended for body centric wireless communication (BCWC). The design is based on a High Impedance Surface (HIS) as substrates for dipoles operating in the Initial, Scientific and Medical (ISM) 2.5 GHz band. We demonstrate that the HIS can be used without any dipole on top with a single feed point as low-profile antennas. We analyze two possible feeding mechanisms of an HIS of dogbone-shaped conductors. As a result, the proposed antenna does not change significantly when in close proximity of the body: the HIS is utilized to isolate the user's body from undesired electromagnetic radiation. We show that broadside gain and SAR values of the proposed design compared to conventional dipole antenna. Furthermore, it offers a compact and low profile solution which makes it a good candidate for the wearable WBAN application.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116998624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157307
Skander Lazgheb, Bacem Bayar, M. Belouda, H. Oueslati, S. Mabrouk
Renewable energy production is not continuous and reliant on climatic conditions as well as geographical location. Deal with the problem of intermittency of renewable energy sources have emerged as the biggest interests of the last decade. To overcome the issues inserting batteries to these renewable energy sources is seen as an attractive option. Such energy systems may simultaneously tackle the concerns regarding climate change, energy security, optimal design, and problems related to the battery bank. The present paper proposes the development of a Raspberry Pi-based hardware platform for data acquisition, supervision and energy management of a hybrid PV/WT/Batteries system. It may be speculated that integrating smart technologies in the renewable energy sector into a single hybrid energy system, coupled through informatics linkages, would enable to overcome the drawbacks inherent in the intermittent nature of these energy sources.
{"title":"Raspberry Pi-based smart platform for data acquisition, supervision and management of a hybrid PV/WT/Batteries system","authors":"Skander Lazgheb, Bacem Bayar, M. Belouda, H. Oueslati, S. Mabrouk","doi":"10.1109/mms48040.2019.9157307","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157307","url":null,"abstract":"Renewable energy production is not continuous and reliant on climatic conditions as well as geographical location. Deal with the problem of intermittency of renewable energy sources have emerged as the biggest interests of the last decade. To overcome the issues inserting batteries to these renewable energy sources is seen as an attractive option. Such energy systems may simultaneously tackle the concerns regarding climate change, energy security, optimal design, and problems related to the battery bank. The present paper proposes the development of a Raspberry Pi-based hardware platform for data acquisition, supervision and energy management of a hybrid PV/WT/Batteries system. It may be speculated that integrating smart technologies in the renewable energy sector into a single hybrid energy system, coupled through informatics linkages, would enable to overcome the drawbacks inherent in the intermittent nature of these energy sources.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114390588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157259
Abdallah Chhahadih, Mohamad Faran, A. Ghaddar, G. Moreno, Y. Haidar, T. Akalin
In this communication, a computational and experimental investigation at terahertz frequencies of Planar Gaubau Line combined with Split Ring Resonator is reported. Different parameters such as gap width, position and gap orientation that tuned the resonance peak are studied. The obtained results are useful for the understanding of coupling mechanism between a radially polarized wave along a metallic strip and a Split Ring Resonator.
{"title":"Tunable Terahertz Response of Split Ring Resonator Loaded Along Planar Goubau Line","authors":"Abdallah Chhahadih, Mohamad Faran, A. Ghaddar, G. Moreno, Y. Haidar, T. Akalin","doi":"10.1109/mms48040.2019.9157259","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157259","url":null,"abstract":"In this communication, a computational and experimental investigation at terahertz frequencies of Planar Gaubau Line combined with Split Ring Resonator is reported. Different parameters such as gap width, position and gap orientation that tuned the resonance peak are studied. The obtained results are useful for the understanding of coupling mechanism between a radially polarized wave along a metallic strip and a Split Ring Resonator.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134465953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157269
Ines Lahmar, A. Zaier, Mohamed Yahia, R. Bouallègue
Ensemble clustering refers to combine many clustering methods to produce better results. In this context, we propose a new clustering ensemble method inspired from cluster forests (CF) based Self-Adaptive Fuzzy C-Means (SAFCM) method. Firstly, unsupervised feature selection methodology based on the building of best variables on simulated datasets. Next, we ameliorate the CF algorithm with the integration of SAFCM to find also the best number of K groups. Finally, the modified version normalized cuts spectral clustering (Ncut) is applied to general grouping. The proposed algorithm was tested on datasets from UCI Machine Learning Repository. The experimental results indicate that our proposed method outperforms both different clustering algorithms in terms of clustering quality.
{"title":"A Self Adaptive FCM Cluster Forests Based Feature Selection","authors":"Ines Lahmar, A. Zaier, Mohamed Yahia, R. Bouallègue","doi":"10.1109/mms48040.2019.9157269","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157269","url":null,"abstract":"Ensemble clustering refers to combine many clustering methods to produce better results. In this context, we propose a new clustering ensemble method inspired from cluster forests (CF) based Self-Adaptive Fuzzy C-Means (SAFCM) method. Firstly, unsupervised feature selection methodology based on the building of best variables on simulated datasets. Next, we ameliorate the CF algorithm with the integration of SAFCM to find also the best number of K groups. Finally, the modified version normalized cuts spectral clustering (Ncut) is applied to general grouping. The proposed algorithm was tested on datasets from UCI Machine Learning Repository. The experimental results indicate that our proposed method outperforms both different clustering algorithms in terms of clustering quality.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133113575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157286
M. Abdi, T. Aguili
The aperture coupled microstrip antenna (ACMA) presents a good candidate for automotive radar application due to its compacity, light weight, low cost and the simplicity of its integration in antenna array. Typically, it consists of two substrates divided by a conductive ground plane in between. The patch is located on top of the upper substrate and the feedline is situated on the bottom substrate. Thereby, this antenna avoids parasitic line radiation which can, in some cases, disrupt side-lobe levels. This communication presents the design of a Multilayered Aperture Coupled Microstrip Antenna (MACMA) for 79 GHz automotive radar applications. This antenna presents in addition a Rohacell HF 51 foam sandwiched between the ground plane and the patch substrate layer. The multilayer substrate is used to minimize the coupling between patch antennas, in particular, surface waves which are not significantly excited on foam dielectric material thanks to the low synthetized permittivity. MACMPA model was done with High Frequency Structure Simulator (HFSS) software tool that could treat 3D full-wave electromagnetic structure analysis based on Finite Element Method.
孔径耦合微带天线(ACMA)具有体积小、重量轻、成本低、集成简单等优点，是汽车雷达应用的理想选择。通常，它由两个基片组成，中间有一个导电地平面。所述贴片位于所述上基板的顶部，所述馈线位于所述下基板上。因此，这种天线避免了在某些情况下可能破坏副瓣电平的寄生线辐射。本通信介绍了用于79 GHz汽车雷达应用的多层孔径耦合微带天线(MACMA)的设计。该天线在接地面和贴片基板层之间夹有一层Rohacell HF 51泡沫。多层衬底用于最小化贴片天线之间的耦合，特别是由于泡沫介质材料的低综合介电常数，表面波在泡沫介质材料上不被显著激发。采用基于有限元法的三维全波电磁结构分析软件HFSS (High Frequency Structure Simulator)建立了MACMPA模型。
{"title":"Design of a Compact Multilayered Aperture Coupled Microstrip Antenna for Automotive Range Radar Application","authors":"M. Abdi, T. Aguili","doi":"10.1109/mms48040.2019.9157286","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157286","url":null,"abstract":"The aperture coupled microstrip antenna (ACMA) presents a good candidate for automotive radar application due to its compacity, light weight, low cost and the simplicity of its integration in antenna array. Typically, it consists of two substrates divided by a conductive ground plane in between. The patch is located on top of the upper substrate and the feedline is situated on the bottom substrate. Thereby, this antenna avoids parasitic line radiation which can, in some cases, disrupt side-lobe levels. This communication presents the design of a Multilayered Aperture Coupled Microstrip Antenna (MACMA) for 79 GHz automotive radar applications. This antenna presents in addition a Rohacell HF 51 foam sandwiched between the ground plane and the patch substrate layer. The multilayer substrate is used to minimize the coupling between patch antennas, in particular, surface waves which are not significantly excited on foam dielectric material thanks to the low synthetized permittivity. MACMPA model was done with High Frequency Structure Simulator (HFSS) software tool that could treat 3D full-wave electromagnetic structure analysis based on Finite Element Method.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129308049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157279
A. Abdallah, Amin Zribi, A. Dziri, F. Tlili, M. Terré
A highly reliable and efficient wireless communication system for compressed images delivery is required in emerging multimedia applications. However, the transmission of the image can be attenuated by different factors mainly involved by the wireless communication multimedia systems. In the past decades, various source and channel coding schemes have been developed separately. In this paper, we investigate a joint source-channel coding scheme to improve the image transmission performance. Our main target is to reach a good tradeoff in terms of rate-distortion for Set Partitioning in Hierarchical Trees (SPIHT) image transmission. For the wireless communication part, we consider the Audio Visual PHY Ultra Wide Band IEEE 802.15.3c system. The proposed strategies rely on adaptive process applied for error protection and the modulation operations. Thus, error correcting codes for unequal error protection (UEP) of the compressed bit streams is included. Then, Hierarchical Modulation (HM) is applied to the different bits according to their importance levels. Full of simulations are performed and our results show image quality improvements at the receiver using multilevel UEP and Hierarchical Modulation compared to the ordinary joint source-channel coding system without introducing any extra bandwidth usage.
{"title":"Adaptive Joint Source-Channel Coding Using Multilevel codes for Unequal Error Protection and Hierarchical Modulation for SPIHT Image Transmission","authors":"A. Abdallah, Amin Zribi, A. Dziri, F. Tlili, M. Terré","doi":"10.1109/mms48040.2019.9157279","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157279","url":null,"abstract":"A highly reliable and efficient wireless communication system for compressed images delivery is required in emerging multimedia applications. However, the transmission of the image can be attenuated by different factors mainly involved by the wireless communication multimedia systems. In the past decades, various source and channel coding schemes have been developed separately. In this paper, we investigate a joint source-channel coding scheme to improve the image transmission performance. Our main target is to reach a good tradeoff in terms of rate-distortion for Set Partitioning in Hierarchical Trees (SPIHT) image transmission. For the wireless communication part, we consider the Audio Visual PHY Ultra Wide Band IEEE 802.15.3c system. The proposed strategies rely on adaptive process applied for error protection and the modulation operations. Thus, error correcting codes for unequal error protection (UEP) of the compressed bit streams is included. Then, Hierarchical Modulation (HM) is applied to the different bits according to their importance levels. Full of simulations are performed and our results show image quality improvements at the receiver using multilevel UEP and Hierarchical Modulation compared to the ordinary joint source-channel coding system without introducing any extra bandwidth usage.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122828488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/MMS48040.2019.9157324
M. Mnif, H. Mnif, M. Loulou
Ambient Radio Frequency (RF) energy harvesting has been an attractive area of research due to its eventual applications in many modern low-power systems. The RF waves are present on several high frequency and at low power (a few μW). We present in this paper a new architecture RF-DC rectifier circuit operates at dual simultaneous frequencies. The bands frequencies chosen for this work are GSM (900MHz) and WIFI (2.45GHz). The proposed rectifier is designed in three stages using the MOSFET transistors, the capacitors and the inductors. The technology used is CMOS 0,18μm from TSMC and the simulations were performed using the ADS (Advanced Design System) Simulator. This circuit provides a Power Conversion Efficiency (PCE) of 68.4 % with an input power Pin= −21.3 dbm and an output voltage Vout=1.67 V for the frequency 900 MHz and a PCE of 72.4 % with an input power Pin= −20.5 dbm and an output voltage Vout=1.7 V for the frequency 2.45GHz.
{"title":"An Efficient Dual Band 900MHz / 2.45GHz RF Energy Harvester","authors":"M. Mnif, H. Mnif, M. Loulou","doi":"10.1109/MMS48040.2019.9157324","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157324","url":null,"abstract":"Ambient Radio Frequency (RF) energy harvesting has been an attractive area of research due to its eventual applications in many modern low-power systems. The RF waves are present on several high frequency and at low power (a few μW). We present in this paper a new architecture RF-DC rectifier circuit operates at dual simultaneous frequencies. The bands frequencies chosen for this work are GSM (900MHz) and WIFI (2.45GHz). The proposed rectifier is designed in three stages using the MOSFET transistors, the capacitors and the inductors. The technology used is CMOS 0,18μm from TSMC and the simulations were performed using the ADS (Advanced Design System) Simulator. This circuit provides a Power Conversion Efficiency (PCE) of 68.4 % with an input power Pin= −21.3 dbm and an output voltage Vout=1.67 V for the frequency 900 MHz and a PCE of 72.4 % with an input power Pin= −20.5 dbm and an output voltage Vout=1.7 V for the frequency 2.45GHz.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123068577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157266
Radhoine Aloui, Z. Houaneb, I. Llamas-Garro, H. Zairi
In this paper, two different types of graphene based rectangular patch antennas are designed for broadband terahertz applications. In the first step, we have modeled an antenna patch by copper metal for terahertz applications. The simulation results have a bad reflection coefficient according to used copper metal. To improvement this results an important graphene material have a good conductivity can be work in the second step. Time domain solver of CST MWS software is used to evaluate the performances of SIW patch antenna. The results obtained from CST are compared with that from HFSS to further validate the design.
{"title":"Terahertz Substrate Integrated Waveguide Wideband Antenna for Medical Imaging and Satellite Communications Applications","authors":"Radhoine Aloui, Z. Houaneb, I. Llamas-Garro, H. Zairi","doi":"10.1109/mms48040.2019.9157266","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157266","url":null,"abstract":"In this paper, two different types of graphene based rectangular patch antennas are designed for broadband terahertz applications. In the first step, we have modeled an antenna patch by copper metal for terahertz applications. The simulation results have a bad reflection coefficient according to used copper metal. To improvement this results an important graphene material have a good conductivity can be work in the second step. Time domain solver of CST MWS software is used to evaluate the performances of SIW patch antenna. The results obtained from CST are compared with that from HFSS to further validate the design.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114373320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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