Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696046
A. Omar, Z. Shen
A dual-polarized absorber based on the 3-D frequency selective structure is proposed, which consists of two-dimensional periodic array of three-dimensional unit cells and lumped components to provide matching to free space and absorb the incident electromagnetic wave. This absorber works for both TE- and TM-polarization by modify the basic building block of the original design. With suitable values for the lumped components, one can achieve a wide absorption bandwidth of 100% for TE- and TM-polarizations. The proposed absorber shows a stable performance under oblique angles of incidence for both polarizations.
{"title":"Dual-polarized absorber based on 3-D frequency selective structure","authors":"A. Omar, Z. Shen","doi":"10.1109/APS.2016.7696046","DOIUrl":"https://doi.org/10.1109/APS.2016.7696046","url":null,"abstract":"A dual-polarized absorber based on the 3-D frequency selective structure is proposed, which consists of two-dimensional periodic array of three-dimensional unit cells and lumped components to provide matching to free space and absorb the incident electromagnetic wave. This absorber works for both TE- and TM-polarization by modify the basic building block of the original design. With suitable values for the lumped components, one can achieve a wide absorption bandwidth of 100% for TE- and TM-polarizations. The proposed absorber shows a stable performance under oblique angles of incidence for both polarizations.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"1 1","pages":"675-676"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76802135","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 : 2016-06-01DOI: 10.1109/APS.2016.7696249
M. Salucci, G. Oliveri, Andrea Massa, Hanen Ahmadi
The design of conformal arrays radiating the same field of reference linear arrangements is addressed within the Material-by-Design (MbD) framework by exploiting a two-step Quasi-Conformal Transformation Optics (QCTO) procedure. Unlike state-of-the-art design methods, the proposed approach allows to enforce that both the array and the coating are conformal to an arbitrary profile. Preliminary numerical examples are shown to demonstrate the effectiveness of the proposed design methodology.
{"title":"Conformai transformation of linear arrays through QCTO-based design tools","authors":"M. Salucci, G. Oliveri, Andrea Massa, Hanen Ahmadi","doi":"10.1109/APS.2016.7696249","DOIUrl":"https://doi.org/10.1109/APS.2016.7696249","url":null,"abstract":"The design of conformal arrays radiating the same field of reference linear arrangements is addressed within the Material-by-Design (MbD) framework by exploiting a two-step Quasi-Conformal Transformation Optics (QCTO) procedure. Unlike state-of-the-art design methods, the proposed approach allows to enforce that both the array and the coating are conformal to an arbitrary profile. Preliminary numerical examples are shown to demonstrate the effectiveness of the proposed design methodology.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"30 1","pages":"1083-1084"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77022035","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 : 2016-06-01DOI: 10.1109/APS.2016.7696643
A. Safaai‐Jazi, W. Stutzman
A new technique for synthesis of planar rectangular arrays is presented. Using the specified design requirements for side lobe level and half-power beamwidths in the principal planes, the number of elements and element excitation currents are determined. These arrays are constructed using the patterns of uniformly excited rectangular arrays as building blocks. An important feature of these arrays is that their element currents decrease monotonically away from the array center.
{"title":"Synthesis of low side lobe planar arrays","authors":"A. Safaai‐Jazi, W. Stutzman","doi":"10.1109/APS.2016.7696643","DOIUrl":"https://doi.org/10.1109/APS.2016.7696643","url":null,"abstract":"A new technique for synthesis of planar rectangular arrays is presented. Using the specified design requirements for side lobe level and half-power beamwidths in the principal planes, the number of elements and element excitation currents are determined. These arrays are constructed using the patterns of uniformly excited rectangular arrays as building blocks. An important feature of these arrays is that their element currents decrease monotonically away from the array center.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"18 1","pages":"1873-1874"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82211925","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 : 2016-06-01DOI: 10.1109/APS.2016.7695736
S. Soltani, Parisa Lofi, R. Murch
In this paper we describe a method for the design and optimization of MIMO antennas. A rectangular grid of pixels adjacent to a ground plane with hardwired connections between pixels are used as a design surface for the multiport MIMO antenna. Genetic Algorithm optimization is used to find the optimal configuration of connections between pixels and multiple input port locations under the constraints of good impedance matching across all ports and high isolation between ports over the desired frequency band. As an example results for a 4-port MIMO antenna that operates from 5-6 GHz with dimensions of 41 mm × 25mm connected to a 40mm × 75mm ground plane are provided. The proposed antenna is investigated by simulation and measurement and results demonstrate that MIMO antennas can be designed and optimized effectively using Genetic Algorithms.
本文介绍了一种MIMO天线的设计与优化方法。在多端口MIMO天线的设计表面上，使用与地平面相邻的像素矩形网格，像素之间采用硬连线连接。采用遗传算法优化，在所有端口阻抗匹配良好、端口间隔离度高的约束下，找到像素与多个输入端口位置之间的最优连接配置。作为示例，提供了4端口MIMO天线的结果，工作在5-6 GHz，尺寸为41 mm × 25mm，连接到40mm × 75mm地平面。仿真和测试结果表明，采用遗传算法可以有效地设计和优化MIMO天线。
{"title":"MIMO antenna design with pixelated radiator surface for WLAN applications","authors":"S. Soltani, Parisa Lofi, R. Murch","doi":"10.1109/APS.2016.7695736","DOIUrl":"https://doi.org/10.1109/APS.2016.7695736","url":null,"abstract":"In this paper we describe a method for the design and optimization of MIMO antennas. A rectangular grid of pixels adjacent to a ground plane with hardwired connections between pixels are used as a design surface for the multiport MIMO antenna. Genetic Algorithm optimization is used to find the optimal configuration of connections between pixels and multiple input port locations under the constraints of good impedance matching across all ports and high isolation between ports over the desired frequency band. As an example results for a 4-port MIMO antenna that operates from 5-6 GHz with dimensions of 41 mm × 25mm connected to a 40mm × 75mm ground plane are provided. The proposed antenna is investigated by simulation and measurement and results demonstrate that MIMO antennas can be designed and optimized effectively using Genetic Algorithms.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"37 1","pages":"55-56"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81409761","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 : 2016-06-01DOI: 10.1109/APS.2016.7696298
E. Decrossas, T. Reck, Choonsup Lee, C. Jung-Kubiak, I. Mehdi, G. Chattopadhyay
We report on the performance of a W-band multi-flare angle horn antenna manufactured with 3-D printing technology. The paper highlights the fabrication challenges for high frequency operations including the surface roughness of the 3-D technology and the metallization of the polymer.
{"title":"Development of W-band horn antennas using 3D printing technologies","authors":"E. Decrossas, T. Reck, Choonsup Lee, C. Jung-Kubiak, I. Mehdi, G. Chattopadhyay","doi":"10.1109/APS.2016.7696298","DOIUrl":"https://doi.org/10.1109/APS.2016.7696298","url":null,"abstract":"We report on the performance of a W-band multi-flare angle horn antenna manufactured with 3-D printing technology. The paper highlights the fabrication challenges for high frequency operations including the surface roughness of the 3-D technology and the metallization of the polymer.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"30 1","pages":"1181-1182"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81750170","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 : 2016-06-01DOI: 10.1109/APS.2016.7696791
M. Cai, H. Xia, Hao Wang, Guangli Yang
In this paper, we introduced a mobile phone closed loop WAN antenna system with tunable RF circuits and automatic S11 calculation algorithm that can dynamically optimize antenna return loss to reduce the head and hand user effects on the antenna impedance matching. Measured antenna S11 indicates that antenna resonance can shift back to original frequency even it is detuned for over 150 MHz at 900 band.
{"title":"A closed loop WAN antenna to reduce head and hand effects for mobile phone applications","authors":"M. Cai, H. Xia, Hao Wang, Guangli Yang","doi":"10.1109/APS.2016.7696791","DOIUrl":"https://doi.org/10.1109/APS.2016.7696791","url":null,"abstract":"In this paper, we introduced a mobile phone closed loop WAN antenna system with tunable RF circuits and automatic S11 calculation algorithm that can dynamically optimize antenna return loss to reduce the head and hand user effects on the antenna impedance matching. Measured antenna S11 indicates that antenna resonance can shift back to original frequency even it is detuned for over 150 MHz at 900 band.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"1 1","pages":"2169-2170"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82228341","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 : 2016-06-01DOI: 10.1109/APS.2016.7695911
J. Bito, M. Tentzeris
An analytical design of a bias circuit for a real-time active matching circuit utilizing p-i-n diode switches is discussed in terms of practical circuit restrictions of isolation, response time and rated DC current. The effect of a non-ideal p-i-n diode switch with the bias circuit for the input impedance was confirm in the input power range of 0 to 30 dBm, and an optimized bias circuit under the limitation of use of Arduino Uno micro-controller module was designed. The performance of the matching circuit was confirmed through the simulation proving that the p-i-n diode switch with the optimized bias circuit can realize almost the same performance as the ideal switch.
{"title":"Bias circuit design for a real-time electrically controlled active matching circuit utilizing p-i-n diode switches for wireless power transfer","authors":"J. Bito, M. Tentzeris","doi":"10.1109/APS.2016.7695911","DOIUrl":"https://doi.org/10.1109/APS.2016.7695911","url":null,"abstract":"An analytical design of a bias circuit for a real-time active matching circuit utilizing p-i-n diode switches is discussed in terms of practical circuit restrictions of isolation, response time and rated DC current. The effect of a non-ideal p-i-n diode switch with the bias circuit for the input impedance was confirm in the input power range of 0 to 30 dBm, and an optimized bias circuit under the limitation of use of Arduino Uno micro-controller module was designed. The performance of the matching circuit was confirmed through the simulation proving that the p-i-n diode switch with the optimized bias circuit can realize almost the same performance as the ideal switch.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"26 1","pages":"405-406"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82260516","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 : 2016-06-01DOI: 10.1109/APS.2016.7695733
K. Konno, Qiang Chen, R. Burkholder
This paper deals with a novel characteristic basis function method (CBFM) for numerical analysis of a finite periodic array antenna. The CBFM uses uniformity of current distribution of the periodic array to reduce its computational cost. Results of numerical simulation show that the computational cost of the CBFM is O(N) where N is the total number of unknowns.
{"title":"Numerical analysis of finite periodic array antenna using novel characteristic basis function method","authors":"K. Konno, Qiang Chen, R. Burkholder","doi":"10.1109/APS.2016.7695733","DOIUrl":"https://doi.org/10.1109/APS.2016.7695733","url":null,"abstract":"This paper deals with a novel characteristic basis function method (CBFM) for numerical analysis of a finite periodic array antenna. The CBFM uses uniformity of current distribution of the periodic array to reduce its computational cost. Results of numerical simulation show that the computational cost of the CBFM is O(N) where N is the total number of unknowns.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"26 1","pages":"49-50"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76363119","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 : 2016-06-01DOI: 10.1109/APS.2016.7696137
Greeshmaja Govind, E. Johari, M. Akhtar
The microwave imaging system based on a novel eight element microstrip patch antenna array is proposed. The experimental setup consists of the designed antenna array along with the vector network analyzer and associated RF components in order to measure the 8-port S-matrix of designated samples at 3 GHz. The measured S-parameters are first transformed into the electric field data with the help of a simple calibration procedure involving some known reference samples. The actual image of the test region is then obtained by reconstructing the dielectric profile of the domain of interest in terms of the calibrated electric field data using the distorted Born iterative method. The performance of the proposed compact and low cost system is evaluated by imaging Plexiglas, ethanol solvent and other test specimens.
{"title":"Microwave imaging using 8-element microstrip patch antenna array","authors":"Greeshmaja Govind, E. Johari, M. Akhtar","doi":"10.1109/APS.2016.7696137","DOIUrl":"https://doi.org/10.1109/APS.2016.7696137","url":null,"abstract":"The microwave imaging system based on a novel eight element microstrip patch antenna array is proposed. The experimental setup consists of the designed antenna array along with the vector network analyzer and associated RF components in order to measure the 8-port S-matrix of designated samples at 3 GHz. The measured S-parameters are first transformed into the electric field data with the help of a simple calibration procedure involving some known reference samples. The actual image of the test region is then obtained by reconstructing the dielectric profile of the domain of interest in terms of the calibrated electric field data using the distorted Born iterative method. The performance of the proposed compact and low cost system is evaluated by imaging Plexiglas, ethanol solvent and other test specimens.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"11 1","pages":"857-858"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76220681","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 : 2016-06-01DOI: 10.1109/APS.2016.7695978
A. Hassan, Muhammad Umar Khan, M. Sharawi
In this paper, a 4-element multiple-input-multiple-output (MIMO) antenna is presented. The antenna elements comprise of half circle shaped printed monopoles. The antenna is designed on an FR4 substrate of dimensions 110×60×0.8 mm3. The antenna operates in the 2.45 GHz band with a bandwidth of 250 MHz. The antenna maintains a minimum isolation of 11 dB between its elements in the operating band. The far-field results of the antenna show that each element has a peak gain of 3.57 dBi and a radiation efficiency of 92.5% at 2.45 GHz. The correlation coefficient is also calculated from the far-field results which shows that antenna has a maximum correlation coefficient of 0.2 in the operating band.
{"title":"Half circle shape monopole based 4-element MIMO antenna","authors":"A. Hassan, Muhammad Umar Khan, M. Sharawi","doi":"10.1109/APS.2016.7695978","DOIUrl":"https://doi.org/10.1109/APS.2016.7695978","url":null,"abstract":"In this paper, a 4-element multiple-input-multiple-output (MIMO) antenna is presented. The antenna elements comprise of half circle shaped printed monopoles. The antenna is designed on an FR4 substrate of dimensions 110×60×0.8 mm3. The antenna operates in the 2.45 GHz band with a bandwidth of 250 MHz. The antenna maintains a minimum isolation of 11 dB between its elements in the operating band. The far-field results of the antenna show that each element has a peak gain of 3.57 dBi and a radiation efficiency of 92.5% at 2.45 GHz. The correlation coefficient is also calculated from the far-field results which shows that antenna has a maximum correlation coefficient of 0.2 in the operating band.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"37 1","pages":"539-540"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86891132","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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