Pub Date : 2016-09-01DOI: 10.1109/MECAP.2016.7790099
M. Soueid, Nathalie Ghazi, P. Lévêque, D. Arnaud-Cormos, Lynn Carr, R. O’Connor
In this paper, an electromagnetic characterization of an electrode-based delivery system is proposed for the exposure of living biological cells to nanosecond pulses. The characterization of the 1-mm gap electrode device was carried out through experimental measurements and numerical simulations. The frequency time domain analyses demonstrate the adaptation of the proposed assembly up to 300 MHz. High voltage measurements and simulations were performed using an applied pulse duration of 10 ns and magnitude of 6.1 kV. This study proved the utility of this device for delivering pulses as short as 10 ns and achieving an electric field magnitude of 6 MV/m. This device can be used for real-time investigations of biological samples.
{"title":"nsPEF characterization of a delivery device based on 1-mm Gap thin electrodes for the exposure of biological cells","authors":"M. Soueid, Nathalie Ghazi, P. Lévêque, D. Arnaud-Cormos, Lynn Carr, R. O’Connor","doi":"10.1109/MECAP.2016.7790099","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790099","url":null,"abstract":"In this paper, an electromagnetic characterization of an electrode-based delivery system is proposed for the exposure of living biological cells to nanosecond pulses. The characterization of the 1-mm gap electrode device was carried out through experimental measurements and numerical simulations. The frequency time domain analyses demonstrate the adaptation of the proposed assembly up to 300 MHz. High voltage measurements and simulations were performed using an applied pulse duration of 10 ns and magnitude of 6.1 kV. This study proved the utility of this device for delivering pulses as short as 10 ns and achieving an electric field magnitude of 6 MV/m. This device can be used for real-time investigations of biological samples.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129084349","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790089
S. Alawsh, Mohammad T. Alkhodary, A. Muqaibel, M. Sharawi
Direction of arrival (DOA) estimation has many applications in beam-steering to improve signal reception and interference suppression. The number of sources in the scene of interest is usually very small. Thus, sparse reconstruction becomes a good candidate to work with reduced data sets. Recently, coprime arrays have been proposed for source localization. In this paper, a moving coprime array configuration is implemented for DOA estimation under sparse reconstruction framework. The proposed array uses only one antenna element. The antenna moves along the array axis to cover certain locations specified by the conventional coprime array. A stepped frequency continuous wave (SFCW) signal over ultra-wideband (UWB) is used. A microcontroller is used to control the movement and the data acquisition from the vector network analyzer to the computer. Two main advantages arise out of this approach. First, the complexity in terms of the total number of antenna elements and receivers needed to implement the array is reduced. Second, the mutual coupling effect is eliminated since only one antenna is active at a time. Experimental results in real scenarios were conducted to validate the proposed configuration. It is shown that coprime sampling is superior to uniform sampling with the same number of elements. The impact of the antenna directivity is highlighted.
{"title":"Experimental evaluation of coprime sampler in direction of arrival estimation","authors":"S. Alawsh, Mohammad T. Alkhodary, A. Muqaibel, M. Sharawi","doi":"10.1109/MECAP.2016.7790089","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790089","url":null,"abstract":"Direction of arrival (DOA) estimation has many applications in beam-steering to improve signal reception and interference suppression. The number of sources in the scene of interest is usually very small. Thus, sparse reconstruction becomes a good candidate to work with reduced data sets. Recently, coprime arrays have been proposed for source localization. In this paper, a moving coprime array configuration is implemented for DOA estimation under sparse reconstruction framework. The proposed array uses only one antenna element. The antenna moves along the array axis to cover certain locations specified by the conventional coprime array. A stepped frequency continuous wave (SFCW) signal over ultra-wideband (UWB) is used. A microcontroller is used to control the movement and the data acquisition from the vector network analyzer to the computer. Two main advantages arise out of this approach. First, the complexity in terms of the total number of antenna elements and receivers needed to implement the array is reduced. Second, the mutual coupling effect is eliminated since only one antenna is active at a time. Experimental results in real scenarios were conducted to validate the proposed configuration. It is shown that coprime sampling is superior to uniform sampling with the same number of elements. The impact of the antenna directivity is highlighted.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114286555","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790090
A. Al-Habob, Abderezak M. Kedir, A. Muqaibel, M. Sharawi
In this paper, we study the characteristics of linear co-prime arrays (CPAs) from an array factor (AF) perspective. We start by deriving an exact expression for the array factor and compare it with the approximate formula in [1] as well as that of a uniform linear array (ULA). This is followed by comparing the AF of CPA of ideal (isotropic) elements with an actual implementation considering Dipole elements. The exact derivation of the CPA AF as well as the consideration of dipole elements shows a direct effect on the HPBW and SLL which is expected to affect the direction of arrival performance.
{"title":"Co-prime linear arrays with dipole elements","authors":"A. Al-Habob, Abderezak M. Kedir, A. Muqaibel, M. Sharawi","doi":"10.1109/MECAP.2016.7790090","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790090","url":null,"abstract":"In this paper, we study the characteristics of linear co-prime arrays (CPAs) from an array factor (AF) perspective. We start by deriving an exact expression for the array factor and compare it with the approximate formula in [1] as well as that of a uniform linear array (ULA). This is followed by comparing the AF of CPA of ideal (isotropic) elements with an actual implementation considering Dipole elements. The exact derivation of the CPA AF as well as the consideration of dipole elements shows a direct effect on the HPBW and SLL which is expected to affect the direction of arrival performance.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115038666","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790115
M. Bute, U. Hasar
This paper presents a new method for extracting relative complex permittivity (εr) of dielectric materials by eliminating calibration standards. To validate proposed method it is compared with well known three techniques in literature. All measurements are done by using waveguide measurement techniques which is broadband over X-band (8.2GHz-12.4GHz) frequency range with VNA. While these three methods necessitate calibration standards, proposed method is calibration independent (free). Experimental results of proposed method are in good agreement when compared with other methods in literature. Moreover, this new proposed technique can be implemented for extraction of material characterization of new studies in the future.
{"title":"Thickness-invariant permittivity determination of materials from calibration-independent measurements","authors":"M. Bute, U. Hasar","doi":"10.1109/MECAP.2016.7790115","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790115","url":null,"abstract":"This paper presents a new method for extracting relative complex permittivity (εr) of dielectric materials by eliminating calibration standards. To validate proposed method it is compared with well known three techniques in literature. All measurements are done by using waveguide measurement techniques which is broadband over X-band (8.2GHz-12.4GHz) frequency range with VNA. While these three methods necessitate calibration standards, proposed method is calibration independent (free). Experimental results of proposed method are in good agreement when compared with other methods in literature. Moreover, this new proposed technique can be implemented for extraction of material characterization of new studies in the future.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133243352","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790121
E. Yaacoub, M. Husseini, H. Ghaziri
An overview of the main research topics for massive multiple input multiple output (MIMO) antenna arrays is presented. Massive MIMO is expected to be one of the pillars of fifth generation (5G) and beyond cellular systems. In fact, with millimeter wave (mmWave) communications, a large number of antenna elements can be used to form large arrays of reasonable sizes. This entails significant challenges that need to be overcome in practical implementations. In this paper, we present an overview of important research topics related to massive MIMIO, and discuss their associated challenges. Furthermore, we present several application areas where massive MIMO antenna arrays could lead to significant performance enhancements.
{"title":"An overview of research topics and challenges for 5G massive MIMO antennas","authors":"E. Yaacoub, M. Husseini, H. Ghaziri","doi":"10.1109/MECAP.2016.7790121","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790121","url":null,"abstract":"An overview of the main research topics for massive multiple input multiple output (MIMO) antenna arrays is presented. Massive MIMO is expected to be one of the pillars of fifth generation (5G) and beyond cellular systems. In fact, with millimeter wave (mmWave) communications, a large number of antenna elements can be used to form large arrays of reasonable sizes. This entails significant challenges that need to be overcome in practical implementations. In this paper, we present an overview of important research topics related to massive MIMIO, and discuss their associated challenges. Furthermore, we present several application areas where massive MIMO antenna arrays could lead to significant performance enhancements.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130256429","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790106
H. Tork, Taher Sayed Ahmed, M. Abdalla
This paper introduces an integrated down conversion front end receiver for WiMAX application. The proposed scheme comprises an RF amplifier, microwave oscillator and a passive down conversion mixer. The detailed design, performance of each sub unit and the final integrated unit are discussed. The design is validated using the circuit simulation and its response is competitive with recent commercial product. The results confirm that a local oscillator at 5.9 GHz can be mixed down with an RF input at 5.8 GHz to yield an IF signal with 100 MHz. The conversion loss of the proposed scheme is 7 dB which is competitive with market components.
{"title":"An integrated down conversion front end for WiMAX applications","authors":"H. Tork, Taher Sayed Ahmed, M. Abdalla","doi":"10.1109/MECAP.2016.7790106","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790106","url":null,"abstract":"This paper introduces an integrated down conversion front end receiver for WiMAX application. The proposed scheme comprises an RF amplifier, microwave oscillator and a passive down conversion mixer. The detailed design, performance of each sub unit and the final integrated unit are discussed. The design is validated using the circuit simulation and its response is competitive with recent commercial product. The results confirm that a local oscillator at 5.9 GHz can be mixed down with an RF input at 5.8 GHz to yield an IF signal with 100 MHz. The conversion loss of the proposed scheme is 7 dB which is competitive with market components.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"55 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114050844","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790107
H. Farhat, Y. Lostanlen, T. Tenoux, G. Grunfelder, G. El Zein
This paper presents a measurement campaign carried out at 3.5 GHz. The objective is to characterize the electromagnetic waves propagation in indoor environment. A double directional channel sounder was used to perform these measurements. The collected data were then processed with a high resolution algorithm to extract the multipath parameters. A comparison between measurement results and a ray tracing tool is done to interpret the propagation mechanisms in this environment. The aim of these measurement campaigns is to obtain realistic MIMO channel models.
{"title":"Indoor MIMO channel sounding at 3.5 GHz","authors":"H. Farhat, Y. Lostanlen, T. Tenoux, G. Grunfelder, G. El Zein","doi":"10.1109/MECAP.2016.7790107","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790107","url":null,"abstract":"This paper presents a measurement campaign carried out at 3.5 GHz. The objective is to characterize the electromagnetic waves propagation in indoor environment. A double directional channel sounder was used to perform these measurements. The collected data were then processed with a high resolution algorithm to extract the multipath parameters. A comparison between measurement results and a ray tracing tool is done to interpret the propagation mechanisms in this environment. The aim of these measurement campaigns is to obtain realistic MIMO channel models.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"296 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114381923","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790080
A. Harmouch, Ihab Hassoun, A. El Sayed Ahmad
This paper describes the design and analysis of a multi-resonant compact patch antenna with fractal slots on the basis of Smith Chart geometry for indoor communication systems. A 60mm × 60mm × 1mm single patch antenna with periodic fractals in the form of combined r and x circles is capable of resonating at some desired sub-bands starting from LTE to WI-MAX with good enough directional characteristics greater than 3 dB in average within the whole frequency band. The dielectric material used for the proposed Microstrip patch antenna is Rogers TMM4 with dielectric constant of 4.5 and the patch is made up of perfect electric conductor (PEC). The proposed fractal geometry possesses multiband behavior at 0.7 GHz, 1.15 GHz, 1.8 GHz, 2.4 GHz, 3.7 GHz, 5.2 GHz and 5.8 GHz. In comparison with the already existing antenna systems in the wireless market for similar purposes, the proposed antenna has considerably shown better performance and supplementary compactness which makes it competitive among other antenna models.
{"title":"Multi-resonant compact patch antenna with fractal slots on the basis of smith chart configuration","authors":"A. Harmouch, Ihab Hassoun, A. El Sayed Ahmad","doi":"10.1109/MECAP.2016.7790080","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790080","url":null,"abstract":"This paper describes the design and analysis of a multi-resonant compact patch antenna with fractal slots on the basis of Smith Chart geometry for indoor communication systems. A 60mm × 60mm × 1mm single patch antenna with periodic fractals in the form of combined r and x circles is capable of resonating at some desired sub-bands starting from LTE to WI-MAX with good enough directional characteristics greater than 3 dB in average within the whole frequency band. The dielectric material used for the proposed Microstrip patch antenna is Rogers TMM4 with dielectric constant of 4.5 and the patch is made up of perfect electric conductor (PEC). The proposed fractal geometry possesses multiband behavior at 0.7 GHz, 1.15 GHz, 1.8 GHz, 2.4 GHz, 3.7 GHz, 5.2 GHz and 5.8 GHz. In comparison with the already existing antenna systems in the wireless market for similar purposes, the proposed antenna has considerably shown better performance and supplementary compactness which makes it competitive among other antenna models.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129327643","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790105
Mohamad Khalil, M. Kamarei, J. Jomaah, H. Ayad
In this paper, a new miniaturized wide Band-Pass Substrate Integrated Waveguide (SIW) filter is proposed. The miniaturized design is based on two techniques, combining the Slow-Wave and Half-Mode SIW principles. Also different substrates for each layer with high contrast in the effective permittivity are used. This technique shows that the SIW filter is 90% miniaturized with a bandwidth covering the X-band, insertion loss are less than 2dB and return loss under -12.5dB. Results are compared with previous published papers and show a good efficiency when miniaturizing.
{"title":"Compact multi-layer Band-Pass filter in Substrate Integrated Waveguide (SIW) technology","authors":"Mohamad Khalil, M. Kamarei, J. Jomaah, H. Ayad","doi":"10.1109/MECAP.2016.7790105","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790105","url":null,"abstract":"In this paper, a new miniaturized wide Band-Pass Substrate Integrated Waveguide (SIW) filter is proposed. The miniaturized design is based on two techniques, combining the Slow-Wave and Half-Mode SIW principles. Also different substrates for each layer with high contrast in the effective permittivity are used. This technique shows that the SIW filter is 90% miniaturized with a bandwidth covering the X-band, insertion loss are less than 2dB and return loss under -12.5dB. Results are compared with previous published papers and show a good efficiency when miniaturizing.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127270371","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 : 2016-09-01DOI: 10.1109/MECAP.2016.7790111
M. Medhat, Y. El-Batawy, Alaa K. Abdelmageed, E. Soliman
In this paper a novel nanoparticle structure has been presented to be used in plasmonic photovoltaic to enhance its efficiency. The proposed structure is a silver gear structure that is expected to make good enhancement of light absorption inside the semiconductor forming the photovoltaics (PV) in the visible range of frequencies (200-800 THz). The nano antenna particle is embedded inside the photovoltaics and produces highly confined near-field around the nanoparticle and withing the semiconductor. The extinction cross-section of the proposed nanoparticle in vacuum has been calculated versus the wavelength. Also, the modes of fields are studied and finally the effect of embedding this gear nanoparticle in a silicon photovoltaic is investigated by comparing its absorption with the conventional disk nanoparticle. The proposed structure enhances the light absorption in the near infrared region, which improves the efficiency of the PV solar cells.
{"title":"Gear nano antenna for plasmonie photovoltaic","authors":"M. Medhat, Y. El-Batawy, Alaa K. Abdelmageed, E. Soliman","doi":"10.1109/MECAP.2016.7790111","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790111","url":null,"abstract":"In this paper a novel nanoparticle structure has been presented to be used in plasmonic photovoltaic to enhance its efficiency. The proposed structure is a silver gear structure that is expected to make good enhancement of light absorption inside the semiconductor forming the photovoltaics (PV) in the visible range of frequencies (200-800 THz). The nano antenna particle is embedded inside the photovoltaics and produces highly confined near-field around the nanoparticle and withing the semiconductor. The extinction cross-section of the proposed nanoparticle in vacuum has been calculated versus the wavelength. Also, the modes of fields are studied and finally the effect of embedding this gear nanoparticle in a silicon photovoltaic is investigated by comparing its absorption with the conventional disk nanoparticle. The proposed structure enhances the light absorption in the near infrared region, which improves the efficiency of the PV solar cells.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121385176","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：