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2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)最新文献

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Comprehensive analysis on cross-bowtie element for designing wideband CP Ka-Band reflectarcay 设计宽带CP ka波段反射器的交叉领结单元综合分析
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550216
Muhammad M. Tahseen, A. Dadgarpour, A. Kishk
{"title":"Comprehensive analysis on cross-bowtie element for designing wideband CP Ka-Band reflectarcay","authors":"Muhammad M. Tahseen, A. Dadgarpour, A. Kishk","doi":"10.1109/ANTEM.2016.7550216","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550216","url":null,"abstract":"A comprehensive study on the cross-bowtie element has been made in this paper, for designing wideband circularly polarized (CP) reflectarray (RA) in the Ka-Band. Several parameters have been investigated on the element e.g. slant angle, oblique incidence, dielectric permittivity, and the bandwidth analysis. A λ/4 unit cell size has been used for the analysis. Smaller element will generate less phase errors at the RA surface and provides better antenna performance in terms of bandwidth and aperture efficiency. The element rotation technique has been used to obtain the phase characteristics of the unit cell. The cross bowtie element provides more than 30 % bandwidth, and low reflected wave amplitude losses. The element performance guarantees in resulting wider RA bandwidth and higher aperture efficiency, when used in Ka-Band RA design as an element.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127717603","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}
引用次数: 2
An innovative method of mutual coupling compensation for DOA estimation 一种新的互耦补偿DOA估计方法
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550209
Abdelelah M. Alzahed, S. Mikki, Y. Antar
{"title":"An innovative method of mutual coupling compensation for DOA estimation","authors":"Abdelelah M. Alzahed, S. Mikki, Y. Antar","doi":"10.1109/ANTEM.2016.7550209","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550209","url":null,"abstract":"In this paper, it's shown on how to estimate and minimize the error caused by internal or external electromagnetic interferences in array processing in the vicinity of scatterers. Using a uniform linear array with a uniform separation, a transformation matrix is used to overcome this problem. First, an electromagnetic model is used to describe the antenna behavior by generating the antenna current Green's function in the presence and absence of mutual coupling. Then, by subtracting the two models, the error generated can be compensated using an optimization method to extract the signal-of-interest (SOI). This method process the received data by the array in different elevation angles and will estimate the direction of arrival (DOA) of the impinging signal by using multiple signal classification method (MUSIC).","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"101 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132224465","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}
引用次数: 3
Screen printing RF antennas 丝网印刷射频天线
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550245
G. Xiao, Zhiyi Zhang, Stephen Lang, Y. Tao
{"title":"Screen printing RF antennas","authors":"G. Xiao, Zhiyi Zhang, Stephen Lang, Y. Tao","doi":"10.1109/ANTEM.2016.7550245","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550245","url":null,"abstract":"Screen printing is a low cost and highly efficient printing technology. Its application to the fabrication of RF antennas is introduced in this study. Applications of screen printed antennas for RFID, frequency selective surfaces and energy harvesting applications are presented.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134429888","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}
引用次数: 9
Interplay between iteration step size and spatial filtering in microwave tomography 微波层析成像中迭代步长与空间滤波的相互作用
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550231
S. Geimer, K. Paulsen, P. Meaney, Sebastian Richter
{"title":"Interplay between iteration step size and spatial filtering in microwave tomography","authors":"S. Geimer, K. Paulsen, P. Meaney, Sebastian Richter","doi":"10.1109/ANTEM.2016.7550231","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550231","url":null,"abstract":"We have performed an analysis of the impact of iteration step size with respect to our spatial filtering approach in the context of microwave tomography. While reducing the step size intuitively reduces the convergence rate of the iterative reconstruction process, it has been shown to produce considerable benefits with respect to overall image stability. Especially with regards our Gauss-Newton approach that incorporates a log transformation of the minimization criterion, reducing the step size can be essential in maintaining proper phase unwrapping in more challenging imaging cases. Our early results demonstrate that the step size can be reduced considerably while still achieving relatively rapid convergence and maintaining good stability even under challenging reconstruction problem cases. However, the interplay between the spatial filtering process and our relatively new two-step reconstruction process is less obvious. In this paper we discuss the challenges and opportunities with respect to optimizing these parameters.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133090927","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}
引用次数: 1
On the potential of using multimode reflectarray feeding horn antennas 多模反射馈电喇叭天线的应用前景
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550107
M. A. Moharram, A. Kishk
{"title":"On the potential of using multimode reflectarray feeding horn antennas","authors":"M. A. Moharram, A. Kishk","doi":"10.1109/ANTEM.2016.7550107","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550107","url":null,"abstract":"A new design for a reflectarray offset feed antenna is presented to cover the ka band satellite communications uplink (27.5-31 GHz). The design exploits a multimode feed horn antenna combined with a coaxial cavity to produce the required mixture of modes. The main benefit of such a feed antenna configuration is the low cross polarization and sidelobe level as an offset feed antenna. The antenna design details are presented and the radiation pattern characteristics are compared to a conical horn antenna with the same aperture size. The maximum aperture efficiency of the proposed design is compared to the multimode open ended waveguide design as well as the conical horn using different analysis methods proving at least 3% higher aperture efficiency.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122970812","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}
引用次数: 1
Diversity optimization by axial rotation of helical antennas in a MIMO system MIMO系统中螺旋天线轴向旋转的分集优化
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550102
H. Aumann
{"title":"Diversity optimization by axial rotation of helical antennas in a MIMO system","authors":"H. Aumann","doi":"10.1109/ANTEM.2016.7550102","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550102","url":null,"abstract":"This paper describes a technique for optimizing the diversity of two same-sense, axial-mode helical antennas in a MIMO system. It is shown that for a fixed spatial separation, a mechanical rotation of one of the helical antennas about its longitudinal axis will always minimize the envelope correlation coefficient. The mutual coupling between the antennas can be reduced at the same time. The technique is verified by simulations and s-parameter measurements on 5.8 GHz helical antennas.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124407405","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}
引用次数: 1
Design of UWB chipless RFID tags using 8-bit open circuit stub resonators 采用8位开路存根谐振器的超宽带无芯片RFID标签设计
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550145
O. Haraz, M. Ashraf, S. Alshebili, Mohammed Alshareef, H. Behairy
{"title":"Design of UWB chipless RFID tags using 8-bit open circuit stub resonators","authors":"O. Haraz, M. Ashraf, S. Alshebili, Mohammed Alshareef, H. Behairy","doi":"10.1109/ANTEM.2016.7550145","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550145","url":null,"abstract":"This article proposes the design of a chipless ultra-wideband (UWB) radiofrequency identification (RFID) tag. The proposed structure consists of two modified circular disc monopole antennas and eight-bit open circuit (OC) stub resonators. This tag can be used to encode the incident signals in the frequency range 4-8 GHz. The proposed RFID tag elements are characterized using a full wave simulation program. Complete RFID system is modeled and time domain characteristics of the pulse received at the receiver's antenna is studied.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117149670","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}
引用次数: 6
Flexible exponential weighting function toward side lobe suppression in antenna arrays 天线阵列侧瓣抑制的柔性指数加权函数
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550221
S. A. Aghdam, J. Bagby, Raul J. Pia
{"title":"Flexible exponential weighting function toward side lobe suppression in antenna arrays","authors":"S. A. Aghdam, J. Bagby, Raul J. Pia","doi":"10.1109/ANTEM.2016.7550221","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550221","url":null,"abstract":"In this paper a different class of flexible exponential weighting functions is proposed based on minimizing the sidelobes by definition of a nonconvex problem. The proposed weighting function is fixed by similar way as the Kaiser weighting function, nevertheless it has a lower sidelobe and other sidelobes have equiripple form by determined level. Undesired sidelobes suppression (SLS) by introducing a parameter for increasing free degree. The optimized suppressed sidelobes will be compered by equal mainlobes. Then, a rectangular antenna array is designed for experimental verification. Simulation results besides the experimental tests show that the proposed weighting function performs better SLS than the proposed weighting function for the equal weighting function normalized mainlobe width and length.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115532751","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}
引用次数: 4
Optimizing microwave-radar imaging parameters 优化微波雷达成像参数
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550177
B. R. Lavoie, M. Okoniewski, E. Fear
{"title":"Optimizing microwave-radar imaging parameters","authors":"B. R. Lavoie, M. Okoniewski, E. Fear","doi":"10.1109/ANTEM.2016.7550177","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550177","url":null,"abstract":"We outline a method for simultaneous optimization of multiple imaging parameters for microwave-radar imaging. Arguably, the most important parameter to determine is the effective permittivity to use for image reconstruction. The accuracy and reliability of the final image depends strongly on the ability to accurately estimate the effective permittivity. We demonstrate that our method is capable of estimating the correct effective permittivity, thereby reconstructing reliable images, by applying it to data collected with the Tissue Sensing Adaptive Radar system being developed at the University of Calgary.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115575089","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}
引用次数: 5
Designing a stacked three-element parasitic superdirective antenna 设计一种叠置三元寄生超指令天线
2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2016-07-10 DOI: 10.1109/ANTEM.2016.7550103
A. Haskou, A. Sharaiha, S. Collardey
{"title":"Designing a stacked three-element parasitic superdirective antenna","authors":"A. Haskou, A. Sharaiha, S. Collardey","doi":"10.1109/ANTEM.2016.7550103","DOIUrl":"https://doi.org/10.1109/ANTEM.2016.7550103","url":null,"abstract":"In this paper we investigate designing a stacked three-element antenna arrays for UHF band. The array is based on miniaturized printed half-loop antenna integrated in a PCB of 8 × 8cm2. To study the inter-element distance effect on the antenna performance (directivity, input impedance and radiation efficiency), a parametric analysis is performed. The obtained results show that for small distances high directivities can be achieved in the case of the fully driven element. However, to transform this array to a parasitic (loaded) one, negative resistances are required and neglecting these resistances significantly decrease the antenna directivity. The results are validated via measurements.","PeriodicalId":447985,"journal":{"name":"2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115602638","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}
引用次数: 2
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