Pub Date : 2016-03-13DOI: 10.1109/ROPACES.2016.7465312
Abdul Maalik, Ismatullah
In this paper, we first synthesize a current sheet from a given radiation pattern using inverse equivalent current method and then realize the current sheet using an aperiodic array of microstrip patches. Specifically, we try to reproduce the radiation pattern of a given reflector-horn system by planar array of microstrip patches. Since the resulting array is truly aperiodic in nature, so no grating lobe arises.
{"title":"Synthesis and realization of radiation pattern of reflector antenna using an aperiodic array of microstrip patches","authors":"Abdul Maalik, Ismatullah","doi":"10.1109/ROPACES.2016.7465312","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465312","url":null,"abstract":"In this paper, we first synthesize a current sheet from a given radiation pattern using inverse equivalent current method and then realize the current sheet using an aperiodic array of microstrip patches. Specifically, we try to reproduce the radiation pattern of a given reflector-horn system by planar array of microstrip patches. Since the resulting array is truly aperiodic in nature, so no grating lobe arises.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128515418","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465444
D. Elsheakh
The design and development of broadband multi arms quasi-Yagi antenna for ka-band and MM-wave wireless communications applications is introduced. The proposed antenna consists of 50 Q microstrip line feed terminated by balun for good impedance matching, printed multi arms of dipole, and a short strip with finite ground plane. The antenna structures, together with the parasitic elements are designed to achieve broad dual-band extended from 23 GHz to 32 GHz and from 43 GHz to 80 GHz. The antenna has been designed to meet the requirement of ISM band 60 GHz, WLANs, WPANs, W-band, 5th generation cellular (28/38) GHz and 80 GHz automotive radar. Antenna design was first simulated using HFSS ver.14, and obtained results were compared with experimental measurements on a prototype developed of a single printed circuit board.
{"title":"Multi arms quasi-yagi antenna for millimeter-wave applications","authors":"D. Elsheakh","doi":"10.1109/ROPACES.2016.7465444","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465444","url":null,"abstract":"The design and development of broadband multi arms quasi-Yagi antenna for ka-band and MM-wave wireless communications applications is introduced. The proposed antenna consists of 50 Q microstrip line feed terminated by balun for good impedance matching, printed multi arms of dipole, and a short strip with finite ground plane. The antenna structures, together with the parasitic elements are designed to achieve broad dual-band extended from 23 GHz to 32 GHz and from 43 GHz to 80 GHz. The antenna has been designed to meet the requirement of ISM band 60 GHz, WLANs, WPANs, W-band, 5th generation cellular (28/38) GHz and 80 GHz automotive radar. Antenna design was first simulated using HFSS ver.14, and obtained results were compared with experimental measurements on a prototype developed of a single printed circuit board.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128779179","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465449
P. Nayeri, R. Haupt
Digital beamforming is the heart of adaptive beamforming. Its implementation has been slow due to hardware complexity and expense. This paper proposes a relatively inexpensive approach to digital beamforming using software defined radios. An experimental setup is described and results presented.
{"title":"A testbed for adaptive beamforming with software defined radio arrays","authors":"P. Nayeri, R. Haupt","doi":"10.1109/ROPACES.2016.7465449","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465449","url":null,"abstract":"Digital beamforming is the heart of adaptive beamforming. Its implementation has been slow due to hardware complexity and expense. This paper proposes a relatively inexpensive approach to digital beamforming using software defined radios. An experimental setup is described and results presented.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"155 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128664901","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465368
E. Bleszynski, M. Bleszynski, T. Jaroszewicz
A novel procedure Is presented for the evaluation of matrix elements of the tensor Green function with Rao-Wilton-Glisson basis functions appearing in surface integral equations in electromagnetics. The procedure, at this point applicable to planar geometries, reduces four-dimensional surface integrals with singular integrands to line integrals over triangle edges with regular integrands. The main advantage of the derived expressions is that they offer simplicity and easily controllable accuracy without the need of using numerical singularity extraction methods.
{"title":"Reduction of singular surface integrals of tensor Green function to non-singular line integrals in integral equations for planar geometries","authors":"E. Bleszynski, M. Bleszynski, T. Jaroszewicz","doi":"10.1109/ROPACES.2016.7465368","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465368","url":null,"abstract":"A novel procedure Is presented for the evaluation of matrix elements of the tensor Green function with Rao-Wilton-Glisson basis functions appearing in surface integral equations in electromagnetics. The procedure, at this point applicable to planar geometries, reduces four-dimensional surface integrals with singular integrands to line integrals over triangle edges with regular integrands. The main advantage of the derived expressions is that they offer simplicity and easily controllable accuracy without the need of using numerical singularity extraction methods.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129049949","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465333
Wenxing Li, Xiaoliang Guo
In this article, a novel frequency selective surface with multiple transmission zeros is proposed which works with one pass-band from 9. 7GHz to 12.2GHz(X-band) and two stop-bands from C-band to Ku-band. There are two zeros in each band so that the width and the rectangle coefficient of each band can be large enough. The FSS is achieved by two-layer periodic arrays of unit cells based on loop structure and Jerusalem cross. It works stable in different incident angles and polarizations and the insertion loss is less than 0.4dB.
{"title":"A novel wide-band frequency selective surface with multiple transmission zeros and poles","authors":"Wenxing Li, Xiaoliang Guo","doi":"10.1109/ROPACES.2016.7465333","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465333","url":null,"abstract":"In this article, a novel frequency selective surface with multiple transmission zeros is proposed which works with one pass-band from 9. 7GHz to 12.2GHz(X-band) and two stop-bands from C-band to Ku-band. There are two zeros in each band so that the width and the rectangle coefficient of each band can be large enough. The FSS is achieved by two-layer periodic arrays of unit cells based on loop structure and Jerusalem cross. It works stable in different incident angles and polarizations and the insertion loss is less than 0.4dB.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129837411","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465440
Xin Huang, Qingyan Wang, Jason Zheng, Ji Chen, M. Ghosn, D. Shah, W. Kainz
A method is developed to evaluate the design of MRI visible and low heating catheter coating layer for cardiac and neuromodulation applications. The procedure consists of both experimental characterization of the coating layer as well as detailed electromagnetic simulation of human subject models during MRI procedure. Practical examples are used to demonstrate the effectiveness of this procedure.
{"title":"Using transfer function approach to develop MRI visible and low RF heating sleeve for cardiac applicaion","authors":"Xin Huang, Qingyan Wang, Jason Zheng, Ji Chen, M. Ghosn, D. Shah, W. Kainz","doi":"10.1109/ROPACES.2016.7465440","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465440","url":null,"abstract":"A method is developed to evaluate the design of MRI visible and low heating catheter coating layer for cardiac and neuromodulation applications. The procedure consists of both experimental characterization of the coating layer as well as detailed electromagnetic simulation of human subject models during MRI procedure. Practical examples are used to demonstrate the effectiveness of this procedure.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129184396","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465413
U. Jakobus, J. V. van Tonder, M. Schoeman, E. Attardo
The numerical algorithms in the electromagnetic field solver FEKO are under constant development to add new methods or to improve the existing ones. In this paper we present a selection of the most recent extensions, namely the introduction of curvilinear wire segments in the MoM and MLFMM solvers (complementing the already available curvilinear surface meshes), the modeling of 3D anisotropic materials in the FEM and FDTD solvers, and the extension of the integrated cable harness modeling to also include the Vance model for braided shields (in addition to Kley and Schelkunoff).
{"title":"Review of the latest feature additions to the electromagnetic solver FEKO","authors":"U. Jakobus, J. V. van Tonder, M. Schoeman, E. Attardo","doi":"10.1109/ROPACES.2016.7465413","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465413","url":null,"abstract":"The numerical algorithms in the electromagnetic field solver FEKO are under constant development to add new methods or to improve the existing ones. In this paper we present a selection of the most recent extensions, namely the introduction of curvilinear wire segments in the MoM and MLFMM solvers (complementing the already available curvilinear surface meshes), the modeling of 3D anisotropic materials in the FEM and FDTD solvers, and the extension of the integrated cable harness modeling to also include the Vance model for braided shields (in addition to Kley and Schelkunoff).","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130563539","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465478
Xuemei Zheng, T. Jiang
A new microstrip ultra-wideband (UWB) bandpass filter (BPF) with dual notched bands based on E-shaped resonator is proposed in this paper. The basic UWB BPF is composed of microstrip lines and rectangular patch mutiple-mode resonator (MMR). To achieve dual notched bands, the proposed UWB BPF used E-shaped resonator coupled to the main transmission line of the basic UWB BPF. The filter has passband from 2.9 GHz to 10.6 GHz, the first notched band is designed from 3.5 to 3.9GHz and the second notched band is designed from 6.7 to 7.3GHz, both of which have less than 0.8 dB magnitude of insertion loss and greater than 20dB return loss. The simulation results show that the proposed filter has good wideband filtering performance with sharp rejection skirts outside the passband.
{"title":"Design of UWB bandpass filter with dual notched bands using E-shaped resonator","authors":"Xuemei Zheng, T. Jiang","doi":"10.1109/ROPACES.2016.7465478","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465478","url":null,"abstract":"A new microstrip ultra-wideband (UWB) bandpass filter (BPF) with dual notched bands based on E-shaped resonator is proposed in this paper. The basic UWB BPF is composed of microstrip lines and rectangular patch mutiple-mode resonator (MMR). To achieve dual notched bands, the proposed UWB BPF used E-shaped resonator coupled to the main transmission line of the basic UWB BPF. The filter has passband from 2.9 GHz to 10.6 GHz, the first notched band is designed from 3.5 to 3.9GHz and the second notched band is designed from 6.7 to 7.3GHz, both of which have less than 0.8 dB magnitude of insertion loss and greater than 20dB return loss. The simulation results show that the proposed filter has good wideband filtering performance with sharp rejection skirts outside the passband.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130659307","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465340
Ashikur Rahman, E. Yavari, Aditya Singh, V. Lubecke, O. Lubecke
A quadrature Doppler radar has been assembled using two single channel x-band MDU1020 radars. The combined radars can resolve null point distortion in physiological monitoring. This work demonstrates that physical offset between two single-channel radars can achieve proper phase shift for quadrature radar channels. Tests were performed with both mechanical targets and human subject.
{"title":"Single-channel radar fusion for quadrature life-sign Doppler radar","authors":"Ashikur Rahman, E. Yavari, Aditya Singh, V. Lubecke, O. Lubecke","doi":"10.1109/ROPACES.2016.7465340","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465340","url":null,"abstract":"A quadrature Doppler radar has been assembled using two single channel x-band MDU1020 radars. The combined radars can resolve null point distortion in physiological monitoring. This work demonstrates that physical offset between two single-channel radars can achieve proper phase shift for quadrature radar channels. Tests were performed with both mechanical targets and human subject.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123978661","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 : 2016-03-13DOI: 10.1109/ROPACES.2016.7465339
Miaomiao Ma, D. Jiao
We represent the dense system of volume integral equation (VIE) by an HSS (Hierarchically Semiseparable) matrix. We then exploit the structure of the HSS matrix and develop a fast direct VIE solver. This solver has O(MogN) complexity in factorization, O(N) complexity in matrix solution as well as memory irrespective of electrical size. For solving electrically small problems whose rank is constant, its complexity is strictly O(N) in both time and memory. The HSS-representation has a controlled accuracy; and the direct solution of the HSS matrix does not involve further approximation. Numerical simulations of large-scale scattering problems involving millions of unknowns on a single core CPU have demonstrated its complexity and accuracy.
{"title":"HSS-matrix based fast direct volume integral equation solver for electrodynamic analysis","authors":"Miaomiao Ma, D. Jiao","doi":"10.1109/ROPACES.2016.7465339","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465339","url":null,"abstract":"We represent the dense system of volume integral equation (VIE) by an HSS (Hierarchically Semiseparable) matrix. We then exploit the structure of the HSS matrix and develop a fast direct VIE solver. This solver has O(MogN) complexity in factorization, O(N) complexity in matrix solution as well as memory irrespective of electrical size. For solving electrically small problems whose rank is constant, its complexity is strictly O(N) in both time and memory. The HSS-representation has a controlled accuracy; and the direct solution of the HSS matrix does not involve further approximation. Numerical simulations of large-scale scattering problems involving millions of unknowns on a single core CPU have demonstrated its complexity and accuracy.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124120038","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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