Pub Date : 2019-10-01DOI: 10.1109/mms48040.2019.9157262
P. Dankov
A coplanar waveguide (CPW) method has been developed for characterization of conductive materials like carbon-content samples (graphite, pressed graphene, N-doped graphene) and anisotropic metasurfaces with planar metal inclusions. The samples have been placed as covers on the CPW conductor layout and additional losses and phase delay/advance have been used for simultaneous extraction of the equivalent conductivity and dielectric constant of these materials. Positive and negative values of the equivalent dielectric constant of the metasurfaces have been extracted in different directions and undue frequency dependence of the permittivity of pressed graphite and graphene samples between values 20–25 up to less than 1 above 30 GHz and equivalent conductivity about 0.3-8 S/m have been measured. A weak magneto-electric (ME) effect in external dc magnetic field has been observed for some carbon-content materials.
{"title":"Characterization of Dielectric Properties of Conductive Materials by Coplanar Waveguide Method","authors":"P. Dankov","doi":"10.1109/mms48040.2019.9157262","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157262","url":null,"abstract":"A coplanar waveguide (CPW) method has been developed for characterization of conductive materials like carbon-content samples (graphite, pressed graphene, N-doped graphene) and anisotropic metasurfaces with planar metal inclusions. The samples have been placed as covers on the CPW conductor layout and additional losses and phase delay/advance have been used for simultaneous extraction of the equivalent conductivity and dielectric constant of these materials. Positive and negative values of the equivalent dielectric constant of the metasurfaces have been extracted in different directions and undue frequency dependence of the permittivity of pressed graphite and graphene samples between values 20–25 up to less than 1 above 30 GHz and equivalent conductivity about 0.3-8 S/m have been measured. A weak magneto-electric (ME) effect in external dc magnetic field has been observed for some carbon-content materials.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"22 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":"127502273","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/MMS48040.2019.9157288
S. Wane, Philippe Descamps, P. Eudeline
Combination of cognitive mm-Wave MIMO Phased Array systems with Optical Sensing solutions is proposed toward new functionalities for environmental perceptions and ubiquitous interactions. The resulting paradigms will operate the unification of mm-Wave and optical sensing solutions for enabling emerging technologies relative to interactions of humans with smart devices and systems in randomly changing environments. Perspectives for Autonomous Vehicles with Advanced Driver Assistance Systems (ADAS) including Gesture-Recognition (GR) through ubiquitous interactions based on hybrid cognitive mm-Wave RFIC technologies and optical systems are drawn. Several hardware realizations of mm-Wave phased-arrays are built and co-assembled with optical systems for smart data fusion and real-time co-array signal processing for autonomously secure decision making process. Unified modeling and measurement platform is proposed with the concept of Multi-Physics (EM-Thermal-Mechanical) Numerial-Co-Simulation-Clone (NCSC), seen as the counter-part of the functional hardware, which enables 4D (space-time evolution) Virtual Prototyping (VP) of augmented reality.
{"title":"Combined Hybrid mm-Waves and Optics Sensing with Smart Data Fusion for Autonomous Vehicles","authors":"S. Wane, Philippe Descamps, P. Eudeline","doi":"10.1109/MMS48040.2019.9157288","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157288","url":null,"abstract":"Combination of cognitive mm-Wave MIMO Phased Array systems with Optical Sensing solutions is proposed toward new functionalities for environmental perceptions and ubiquitous interactions. The resulting paradigms will operate the unification of mm-Wave and optical sensing solutions for enabling emerging technologies relative to interactions of humans with smart devices and systems in randomly changing environments. Perspectives for Autonomous Vehicles with Advanced Driver Assistance Systems (ADAS) including Gesture-Recognition (GR) through ubiquitous interactions based on hybrid cognitive mm-Wave RFIC technologies and optical systems are drawn. Several hardware realizations of mm-Wave phased-arrays are built and co-assembled with optical systems for smart data fusion and real-time co-array signal processing for autonomously secure decision making process. Unified modeling and measurement platform is proposed with the concept of Multi-Physics (EM-Thermal-Mechanical) Numerial-Co-Simulation-Clone (NCSC), seen as the counter-part of the functional hardware, which enables 4D (space-time evolution) Virtual Prototyping (VP) of augmented reality.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"165 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":"133091572","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/MMS48040.2019.9157318
Marwa Chaabane, A. Hamida, M. Mansouri, H. Nounou, M. Nounou
The objective of this paper is to propose a new method to enhance process monitoring in Structural Health Monitoring. This method consists of a particle filter-based Optimized Max Double Shewhart (OM-DShewhart). This method combines the advantages of the Particle Filter (PF) and the advantages of the proposed control chart optimized Max Double Shewhart (OM-DShewhart) which consists of an extended version of the conventional Shewhart. The advantages of the proposed method are twofold: (i) The PF is proposed to estimate the states of a structural Health Monitoring system; (ii) the Optimized Max-DShewhart chart is proposed to detect damages shifts in the mean and in the variance in order to improve the monitoring of civil processes. The performance of the proposed method is demonstrated using the complex 3 DOF spring-mass-dashpot system.
{"title":"Particle Filter-based Optimized Max Double Shewhart Chart for Damage Detection in Structural Health Monitoring Systems","authors":"Marwa Chaabane, A. Hamida, M. Mansouri, H. Nounou, M. Nounou","doi":"10.1109/MMS48040.2019.9157318","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157318","url":null,"abstract":"The objective of this paper is to propose a new method to enhance process monitoring in Structural Health Monitoring. This method consists of a particle filter-based Optimized Max Double Shewhart (OM-DShewhart). This method combines the advantages of the Particle Filter (PF) and the advantages of the proposed control chart optimized Max Double Shewhart (OM-DShewhart) which consists of an extended version of the conventional Shewhart. The advantages of the proposed method are twofold: (i) The PF is proposed to estimate the states of a structural Health Monitoring system; (ii) the Optimized Max-DShewhart chart is proposed to detect damages shifts in the mean and in the variance in order to improve the monitoring of civil processes. The performance of the proposed method is demonstrated using the complex 3 DOF spring-mass-dashpot system.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"1100 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":"122915628","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/MMS48040.2019.9157253
S. Akkar, F. Harabi, A. Gharsallah
This paper proposes two Linear ESPRIT-like algorithms for Directions of Arrival (DoA) estimation problem. The assumed constraints are the same as those imposed onto the standard ESPRIT algorithm. We introduce a new approach, for both signal subspace and eigenvalues estimation, that can efficiently replace the requirement for the classic Eigenvalue Decomposition techniques. This approach, requiring only linear operations, makes the DoAs estimator faster while maintaining comparable estimation accuracy. The proposed algorithms allow high resolution capabilities with reduced computational cost and lower processing time as compared with existing schemes. The Cramer Rao Bound on the variance of DoAs estimated by the proposed algorithms is analysed. The simulation results confirm that high resolution on DoAs estimation can be achieved by the developed methods and prove the validity of our approach.
{"title":"Linear ESPRIT-Like Algorithms for Fast Directions of Arrival Estimation with Real Structure","authors":"S. Akkar, F. Harabi, A. Gharsallah","doi":"10.1109/MMS48040.2019.9157253","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157253","url":null,"abstract":"This paper proposes two Linear ESPRIT-like algorithms for Directions of Arrival (DoA) estimation problem. The assumed constraints are the same as those imposed onto the standard ESPRIT algorithm. We introduce a new approach, for both signal subspace and eigenvalues estimation, that can efficiently replace the requirement for the classic Eigenvalue Decomposition techniques. This approach, requiring only linear operations, makes the DoAs estimator faster while maintaining comparable estimation accuracy. The proposed algorithms allow high resolution capabilities with reduced computational cost and lower processing time as compared with existing schemes. The Cramer Rao Bound on the variance of DoAs estimated by the proposed algorithms is analysed. The simulation results confirm that high resolution on DoAs estimation can be achieved by the developed methods and prove the validity of our approach.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"18 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":"127650182","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/MMS48040.2019.9157303
Inès Ben Hassine, R. Bouallègue
Cooperative communication has been intensively considered for wireless and sensor networks. Its combination with Space-Time Codes (STC) has been recently proposed for Multi-Band OFDM Ultra-Wide Band (MB-OFDM UWB) system in order to improve data rate, system capacity, wireless communication range, and bit error performance. In this paper, we propose a cooperative communication design using Algebraic Space-Time Code (ASTC) called Golden code for the MB-OFDM UWB system. The transmitter, the receiver, and the two parallel amplify-and-forward (AF) relay are supposed equipped with one antenna. Simulation results show that ASTC code improves significantly the error performance of the proposed cooperative MB-OFDM UWB system, compared to the conventional SISO MB-OFDM UWB system. But, the BER performance of the proposed cooperative scheme is degraded compared to the ASTC MIMO MB-OFDM system due to the noise of relay channels.
在无线网络和传感器网络中，协作通信已经得到了广泛的研究。为了提高数据速率、系统容量、无线通信范围和误码率，近年来提出了将空时码(STC)与多频带OFDM超宽带(MB-OFDM UWB)系统相结合的方案。本文提出了一种基于代数空时码(ASTC)的MB-OFDM超宽带系统协同通信设计方案。发射机、接收机和两个并联放大-前向(AF)继电器应该配备一个天线。仿真结果表明，与传统的SISO MB-OFDM UWB系统相比，ASTC编码显著改善了合作MB-OFDM UWB系统的误差性能。但是，由于中继信道的噪声，与ASTC MIMO MB-OFDM系统相比，该合作方案的误码率性能下降。
{"title":"Cooperative Communication in Algebraic Space-Time coded MB-OFDM UWB system","authors":"Inès Ben Hassine, R. Bouallègue","doi":"10.1109/MMS48040.2019.9157303","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157303","url":null,"abstract":"Cooperative communication has been intensively considered for wireless and sensor networks. Its combination with Space-Time Codes (STC) has been recently proposed for Multi-Band OFDM Ultra-Wide Band (MB-OFDM UWB) system in order to improve data rate, system capacity, wireless communication range, and bit error performance. In this paper, we propose a cooperative communication design using Algebraic Space-Time Code (ASTC) called Golden code for the MB-OFDM UWB system. The transmitter, the receiver, and the two parallel amplify-and-forward (AF) relay are supposed equipped with one antenna. Simulation results show that ASTC code improves significantly the error performance of the proposed cooperative MB-OFDM UWB system, compared to the conventional SISO MB-OFDM UWB system. But, the BER performance of the proposed cooperative scheme is degraded compared to the ASTC MIMO MB-OFDM system due to the noise of relay channels.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"357 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":"115959031","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/mms48040.2019.9157251
M. Tasci, O. Sen, Ulas Ozipek, E. Ozbay
In this paper design, fabrication and measurement of three Gallium Nitride, GaN, High Electron Mobility Transistor, HEMT, based Monolithic Microwave Integrated Circuit, MMIC, Low-Noise Amplifiers, LNAs, are presented. Inductive Source Feedback, ISF, topology is used to obtain both better input return loss and noise figure, NF. All three designs achieve higher than 21 dB gain, better than 10 dB input return loss and their NF values are 1.7 dB, 1.3 dB and 0.9 dB in S-band. LNA-1 is 3 ⨯ 5 mm and LNA-2 is 2 ⨯ 3.5 mm, with a % 46 size reduction upon the first version. High resistive gate biasing is utilized in LNA-3 to increase input power handling. Due to the lack of precise control over SiN layer thickness in process in GaN technology, this fabrication step is subject to variations which affects capacitor values. LNA-2 and LNA-3 designs' matching circuitries and overall characteristics are not influenced too much by a change of capacitor values. Targeted bandwidth is 2.7-3.5 GHz, achieved frequency range is 1.5 GHz (from 2.5 GHz to 4 GHz). The three LNA designs have 28.1 dBm, 33.4 dBm, and 35.8 dBm output third-order intercept point, OIP3; and output powers at 1-dB compression points, P1dB, are 18.2 dBm, 23.3 dBm and 25.9 dBm respectively. For all three LNA designs, group delay, τ$g$, is less than 0.3 nanoseconds.
{"title":"GaN HEMT Based MMIC High Gain Low-Noise Amplifiers for S-Band Applications","authors":"M. Tasci, O. Sen, Ulas Ozipek, E. Ozbay","doi":"10.1109/mms48040.2019.9157251","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157251","url":null,"abstract":"In this paper design, fabrication and measurement of three Gallium Nitride, GaN, High Electron Mobility Transistor, HEMT, based Monolithic Microwave Integrated Circuit, MMIC, Low-Noise Amplifiers, LNAs, are presented. Inductive Source Feedback, ISF, topology is used to obtain both better input return loss and noise figure, NF. All three designs achieve higher than 21 dB gain, better than 10 dB input return loss and their NF values are 1.7 dB, 1.3 dB and 0.9 dB in S-band. LNA-1 is 3 ⨯ 5 mm and LNA-2 is 2 ⨯ 3.5 mm, with a % 46 size reduction upon the first version. High resistive gate biasing is utilized in LNA-3 to increase input power handling. Due to the lack of precise control over SiN layer thickness in process in GaN technology, this fabrication step is subject to variations which affects capacitor values. LNA-2 and LNA-3 designs' matching circuitries and overall characteristics are not influenced too much by a change of capacitor values. Targeted bandwidth is 2.7-3.5 GHz, achieved frequency range is 1.5 GHz (from 2.5 GHz to 4 GHz). The three LNA designs have 28.1 dBm, 33.4 dBm, and 35.8 dBm output third-order intercept point, OIP3; and output powers at 1-dB compression points, P1dB, are 18.2 dBm, 23.3 dBm and 25.9 dBm respectively. For all three LNA designs, group delay, τ$g$, is less than 0.3 nanoseconds.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"37 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":"114491289","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/mms48040.2019.9157277
S. Lajnef, M. Chouchane, N. Boulejfen, F. Ghannouchi
The deployment of wide- and multi-band signals necessitates the development of the digital predistortion (DPD) for radio frequency (RF) transmitters. This paper explores novel band selectivity based DPD techniques to linearize a wide-band RF power amplifier (PA) in concurrent dual-band transmitters with in-phase/quadrature (I/Q) impairments. The idea of this approach is related to the use of a selectivity of bands scheme which will diminish the digital sampling rates in DPD signal processing units and system bandwidth. Experimental results prove the effectiveness and the superiority of the proposed approach in comparison with the state-of-the-art work.
{"title":"Band Selectivity Based Digital Predistortion for Concurrent Dual-Band Transmitters","authors":"S. Lajnef, M. Chouchane, N. Boulejfen, F. Ghannouchi","doi":"10.1109/mms48040.2019.9157277","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157277","url":null,"abstract":"The deployment of wide- and multi-band signals necessitates the development of the digital predistortion (DPD) for radio frequency (RF) transmitters. This paper explores novel band selectivity based DPD techniques to linearize a wide-band RF power amplifier (PA) in concurrent dual-band transmitters with in-phase/quadrature (I/Q) impairments. The idea of this approach is related to the use of a selectivity of bands scheme which will diminish the digital sampling rates in DPD signal processing units and system bandwidth. Experimental results prove the effectiveness and the superiority of the proposed approach in comparison with the state-of-the-art work.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"104 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":"114820726","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/MMS48040.2019.9157301
Marwa Slimi, B. Jmai, P. Mendes, A. Gharsallah
This work presents the design of CPW antenna for microwave tumor cell detection. The simulation results of the antenna performance in free space using CST-MWS are shown at 4.5 GHz. In order to study, the influence of the antenna movement on its electrical properties during breast cancer diagnosis, the CPW antenna is placed at a distance of 32 mm from the surface of the breast phantom with and without tumor cells by using different positions of the antenna to cover the entire breast surface and with various cross sections of the breast phantom. The tumor is represented by the sphere of diameter equal to 10 mm. In this paper, three interesting antenna parameters are analyzed, the return loss, the radiation pattern and the E-field inside the breast. This study shows good results to can detect the incidence of the tumor at 4 GHz. Comparing these results without and with tumor, it can be said that increasing the angle between the antenna and the breast phantom (from 0° to 60°), the return loss increases from −17 dB to −19.34 dB in 0°, from −15.37 dB to −19.28 dB in 30° and from −12.18 dB to −15.44 dB in 60°. The gain increases from 4.22 dB to 4.26 dB in 0°, from 1.13 dB to 1.2 dB in 30° and from 3.91 dB to 4.06 dB in 60°. In addition, to the increase of the e-field values inside the different cross sections of the breast phantom.
{"title":"Breast cancer detection based on CPW antenna","authors":"Marwa Slimi, B. Jmai, P. Mendes, A. Gharsallah","doi":"10.1109/MMS48040.2019.9157301","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157301","url":null,"abstract":"This work presents the design of CPW antenna for microwave tumor cell detection. The simulation results of the antenna performance in free space using CST-MWS are shown at 4.5 GHz. In order to study, the influence of the antenna movement on its electrical properties during breast cancer diagnosis, the CPW antenna is placed at a distance of 32 mm from the surface of the breast phantom with and without tumor cells by using different positions of the antenna to cover the entire breast surface and with various cross sections of the breast phantom. The tumor is represented by the sphere of diameter equal to 10 mm. In this paper, three interesting antenna parameters are analyzed, the return loss, the radiation pattern and the E-field inside the breast. This study shows good results to can detect the incidence of the tumor at 4 GHz. Comparing these results without and with tumor, it can be said that increasing the angle between the antenna and the breast phantom (from 0° to 60°), the return loss increases from −17 dB to −19.34 dB in 0°, from −15.37 dB to −19.28 dB in 30° and from −12.18 dB to −15.44 dB in 60°. The gain increases from 4.22 dB to 4.26 dB in 0°, from 1.13 dB to 1.2 dB in 30° and from 3.91 dB to 4.06 dB in 60°. In addition, to the increase of the e-field values inside the different cross sections of the breast phantom.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"116 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":"128066640","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/mms48040.2019.9157283
Imen Sansa, A. Nasri, H. Zairi
In this paper, a novel miniaturized metamaterial unit cell for 5G applications was proposed. The new structure is composed of an outer ring with four slots having capacitive loads and of two intersecting arms placed in the interior of the outer ring. This unit achieves a bandwidth of 52.32% compared to 18.46% for the conventional Split Ring Resonator structure. A set of unit cells are periodically associated on a substrate, above a bowtie antenna to improve their performances. The results show that this miniaturized structure offers some interesting features performances, such as wide bandwidth, which makes the design suitable for 5G systems.
{"title":"A miniaturized metamaterial unit cell for 5G applications","authors":"Imen Sansa, A. Nasri, H. Zairi","doi":"10.1109/mms48040.2019.9157283","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157283","url":null,"abstract":"In this paper, a novel miniaturized metamaterial unit cell for 5G applications was proposed. The new structure is composed of an outer ring with four slots having capacitive loads and of two intersecting arms placed in the interior of the outer ring. This unit achieves a bandwidth of 52.32% compared to 18.46% for the conventional Split Ring Resonator structure. A set of unit cells are periodically associated on a substrate, above a bowtie antenna to improve their performances. The results show that this miniaturized structure offers some interesting features performances, such as wide bandwidth, which makes the design suitable for 5G systems.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"20 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":"126052523","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/MMS48040.2019.9157284
O. Boularess, T. Aguili, J. Yousaf, H. Rmili, B. Hakim, S. Tedjini
This work presents a novel chipless radio frequency identification (RFID) tag design method for Latin alphabets. Unlike the traditional complicated geometry tags, this new method uses a compact printable alphabet letters which additionally offers the advantage of efficient real time recognition of the transmitted data visually along with radio frequency (RF) waves. In this study, alphabet letters (a, b and c) are realized using copper etching on thin dielectric substrate (TLX-8) backed by a ground plane. The original signature of the radar cross section (RCS) frequency response reflected by letter, displays dips corresponding to the presence of individual letters. The tag has been simulated, fabricated and measured in a mono-static radar system using Vivaldi dual polarized antenna in frequency band ranging from 6 to 13 GHz. A robust detection has been reached with very good agreement between the experimental and simulated results in both co- and cross-polarizations.
{"title":"Design of Robust Detection System for Printable Chipless RFID Tag Alphabet Letters","authors":"O. Boularess, T. Aguili, J. Yousaf, H. Rmili, B. Hakim, S. Tedjini","doi":"10.1109/MMS48040.2019.9157284","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157284","url":null,"abstract":"This work presents a novel chipless radio frequency identification (RFID) tag design method for Latin alphabets. Unlike the traditional complicated geometry tags, this new method uses a compact printable alphabet letters which additionally offers the advantage of efficient real time recognition of the transmitted data visually along with radio frequency (RF) waves. In this study, alphabet letters (a, b and c) are realized using copper etching on thin dielectric substrate (TLX-8) backed by a ground plane. The original signature of the radar cross section (RCS) frequency response reflected by letter, displays dips corresponding to the presence of individual letters. The tag has been simulated, fabricated and measured in a mono-static radar system using Vivaldi dual polarized antenna in frequency band ranging from 6 to 13 GHz. A robust detection has been reached with very good agreement between the experimental and simulated results in both co- and cross-polarizations.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"22 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":"130368136","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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