Pub Date : 2016-05-05DOI: 10.1109/ROPACES.2016.7465358
M. Hussein, N. Areed, M. Hameed, S. Obayya
In this paper, two novel designs of nanoantenna for energy harvesting applications are introduced and numerically simulated using the 3D FDTD method. The proposed designs are mainly based on generating identical copies of original elliptical dipoles and then shifting the copies horizontally or vertically. The original elliptical dipoles and the shifted copies are merged together to obtain two novel shapes of nanoantennas with high harvesting efficacy. The proposed design offers total harvesting efficiency of 64.7 %; with an improvement of 85.9 % over the conventional rectangular dipole nanoantenna.
{"title":"Modified elliptical nanoantenna for energy harvesting applications","authors":"M. Hussein, N. Areed, M. Hameed, S. Obayya","doi":"10.1109/ROPACES.2016.7465358","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465358","url":null,"abstract":"In this paper, two novel designs of nanoantenna for energy harvesting applications are introduced and numerically simulated using the 3D FDTD method. The proposed designs are mainly based on generating identical copies of original elliptical dipoles and then shifting the copies horizontally or vertically. The original elliptical dipoles and the shifted copies are merged together to obtain two novel shapes of nanoantennas with high harvesting efficacy. The proposed design offers total harvesting efficiency of 64.7 %; with an improvement of 85.9 % over the conventional rectangular dipole nanoantenna.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123782819","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 : 2016-05-05DOI: 10.1109/ROPACES.2016.7465359
A. Bekasiewicz, S. Koziel
In this paper, a novel structure of a compact UWB slot antenna has been presented. For improved flexibility of the design, the slot is parameterized using splines. All antenna dimensions are simultaneously adjusted using numerical optimization procedures, which leads to a very compact footprint of 199 mm2 and acceptable matching within the entire UWB band.
{"title":"A novel structure and design of compact UWB slot antenna","authors":"A. Bekasiewicz, S. Koziel","doi":"10.1109/ROPACES.2016.7465359","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465359","url":null,"abstract":"In this paper, a novel structure of a compact UWB slot antenna has been presented. For improved flexibility of the design, the slot is parameterized using splines. All antenna dimensions are simultaneously adjusted using numerical optimization procedures, which leads to a very compact footprint of 199 mm2 and acceptable matching within the entire UWB band.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122434305","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 : 2016-05-05DOI: 10.1109/ROPACES.2016.7465372
A. Bekasiewicz, S. Koziel, S. Ogurtsov
In this paper, a technique for expedited design optimization of a compact photonic Y-junction has been proposed. We utilize sequential approximate optimization where local response surface approximation (RSA) models are constructed and optimized to yield a sequence of designs that converge towards the optimum. The junction geometry is parameterized using splines. In order to reduce the design cost, dimensionality of the design space is gradually increased by adding the number of control points for the spline curves in the subsequent algorithm iterations. The final design exhibits transmission of over 49.5 percent and return loss below 0.3 percent over the wavelength range from 1500 nm to 1580 nm.
{"title":"Rapid simulation-driven design of compact photonic Y-junction by variable-dimensional sequential approximate optimization","authors":"A. Bekasiewicz, S. Koziel, S. Ogurtsov","doi":"10.1109/ROPACES.2016.7465372","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465372","url":null,"abstract":"In this paper, a technique for expedited design optimization of a compact photonic Y-junction has been proposed. We utilize sequential approximate optimization where local response surface approximation (RSA) models are constructed and optimized to yield a sequence of designs that converge towards the optimum. The junction geometry is parameterized using splines. In order to reduce the design cost, dimensionality of the design space is gradually increased by adding the number of control points for the spline curves in the subsequent algorithm iterations. The final design exhibits transmission of over 49.5 percent and return loss below 0.3 percent over the wavelength range from 1500 nm to 1580 nm.","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":"2016-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116839904","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 : 2016-05-05DOI: 10.1109/ROPACES.2016.7465434
Wenxing Li, Yu Zhao
A null broadening beamforming method of virtual antenna array is proposed, by which the real antenna array is transformed into virtual antenna array and the component of interference power in the covariance matrix is increased. Compared with the approach of covariance matrix taper, the null depth of the proposed method is improved. The validity of the proposed method is verified by theoretical analysis and simulation results.
{"title":"A null broadening beamforming method of virtual antenna array","authors":"Wenxing Li, Yu Zhao","doi":"10.1109/ROPACES.2016.7465434","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465434","url":null,"abstract":"A null broadening beamforming method of virtual antenna array is proposed, by which the real antenna array is transformed into virtual antenna array and the component of interference power in the covariance matrix is increased. Compared with the approach of covariance matrix taper, the null depth of the proposed method is improved. The validity of the proposed method is verified by theoretical analysis and simulation results.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117122043","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.2016.7465451
B. Farhang-Boroujeny, Arman Farhang, Ahmad Rezazadehreyhani, A. Aminjavaheri, Daiming Qu
This paper presents a comparison of the conventional filter bank multicarrier (FBMC) with the generalized frequency division multiplexing (GFDM) and cyclic FBMC (C-FBMC) that have recently been proposed as waveforms candidates for 5G. We identify situations where FBMC outperforms GFDM/C-FBMC, as well as the cases where GFDM/C-FBMC provide more flexibility than FBMC.
{"title":"A comparison of linear FBMC and circularly shaped waveforms","authors":"B. Farhang-Boroujeny, Arman Farhang, Ahmad Rezazadehreyhani, A. Aminjavaheri, Daiming Qu","doi":"10.1109/ROPACES.2016.7465451","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465451","url":null,"abstract":"This paper presents a comparison of the conventional filter bank multicarrier (FBMC) with the generalized frequency division multiplexing (GFDM) and cyclic FBMC (C-FBMC) that have recently been proposed as waveforms candidates for 5G. We identify situations where FBMC outperforms GFDM/C-FBMC, as well as the cases where GFDM/C-FBMC provide more flexibility than FBMC.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"58 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":"127078585","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.2016.7465476
Han Xu, K. Xu, Yanhui Liu, Q. Liu
A novel high-selectivity triple-mode microstrip bandpass filter (BPF) using short- and open-stub loaded spiral resonator is presented. Because of the spiral structure, the size of designed BPF is reduced greatly. Then the odd- and even-mode method is used to analyze resonant frequencies of the resonator. Based on the analysis, a prototype of the proposed BPF with good selectivity is designed whose center frequency is at 4.3 GHz. Finally, the measured results are shown, which are in good agreement with simulations.
{"title":"Compact triple-mode bandpass filter using short- and open-stub loaded spiral resonator","authors":"Han Xu, K. Xu, Yanhui Liu, Q. Liu","doi":"10.1109/ROPACES.2016.7465476","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465476","url":null,"abstract":"A novel high-selectivity triple-mode microstrip bandpass filter (BPF) using short- and open-stub loaded spiral resonator is presented. Because of the spiral structure, the size of designed BPF is reduced greatly. Then the odd- and even-mode method is used to analyze resonant frequencies of the resonator. Based on the analysis, a prototype of the proposed BPF with good selectivity is designed whose center frequency is at 4.3 GHz. Finally, the measured results are shown, which are in good agreement with simulations.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"02 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":"127189726","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.2016.7465431
Te-wei Liu, Wen‐Hua Tu
A capacitively CPW-fed multiband slot antenna is investigated in this paper. For 10-dB fractional bandwidth, the proposed antenna obtains 12.9%, 2.52%, and 5.33% at the center frequencies of 2.49 GHz, 3.57 GHz and 5.25 GHz, respectively. By using multiple protruded slots, one can achieve multiple operation bands with high design freedom. The three operation frequencies are for WLAN2400/5200 and WiMAX application. The antenna size is 70 mm (L) × 40 mm (W) × 0.8 mm (H). The proposed antenna achieves a near omnidirectional H-plane radiation patterns.
研究了一种电容式cpw馈电多波段缝隙天线。对于10db分数带宽，在2.49 GHz、3.57 GHz和5.25 GHz中心频率下，天线的增益分别为12.9%、2.52%和5.33%。通过使用多个凸槽，可以实现多个工作频带，设计自由度高。三种工作频率分别用于WLAN2400/5200和WiMAX应用。天线尺寸为70 mm (L) × 40 mm (W) × 0.8 mm (H)，实现了近全向的H面辐射方向图。
{"title":"CPW-fed tri-band slot antenna with impedance matching stub","authors":"Te-wei Liu, Wen‐Hua Tu","doi":"10.1109/ROPACES.2016.7465431","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465431","url":null,"abstract":"A capacitively CPW-fed multiband slot antenna is investigated in this paper. For 10-dB fractional bandwidth, the proposed antenna obtains 12.9%, 2.52%, and 5.33% at the center frequencies of 2.49 GHz, 3.57 GHz and 5.25 GHz, respectively. By using multiple protruded slots, one can achieve multiple operation bands with high design freedom. The three operation frequencies are for WLAN2400/5200 and WiMAX application. The antenna size is 70 mm (L) × 40 mm (W) × 0.8 mm (H). The proposed antenna achieves a near omnidirectional H-plane radiation patterns.","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":"125917590","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.2016.7465371
S. Koziel, A. Bekasiewicz
Fast multi-objective optimization of compact impedance transformer is discussed. A set of alternative designs representing possible trade-offs between conflicting design criteria, i.e., electrical performance (here, wideband matching) and the structure size, is obtained through Pareto front exploration by means of surrogate-assisted methods.
{"title":"Rapid multi-objective design optimization of miniaturized impedance transformer by Pareto front exploration","authors":"S. Koziel, A. Bekasiewicz","doi":"10.1109/ROPACES.2016.7465371","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465371","url":null,"abstract":"Fast multi-objective optimization of compact impedance transformer is discussed. A set of alternative designs representing possible trade-offs between conflicting design criteria, i.e., electrical performance (here, wideband matching) and the structure size, is obtained through Pareto front exploration by means of surrogate-assisted methods.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"2 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":"126132458","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.2016.7465477
Mengze Li, K. Xu, Y. Bai, Yanhui Liu, Q. Liu
A new tri-mode banpass filter (BPF) using a half-wavelength spiral resonator center-loaded with two T-shaped open stubs has been presented. Analyzed by the odd- and even-mode method, an odd mode and two even modes of the proposed tri-mode resonator could be flexibly controlled by tuning the electrical length of the spiral resonators and T-shaped stubs. For demonstration purpose, a tri-mode filter example with passband centered at 1.8 GHz has been implemented.
{"title":"Planar microstrip tri-mode bandpass filter using center-stub-loaded spiral resonator","authors":"Mengze Li, K. Xu, Y. Bai, Yanhui Liu, Q. Liu","doi":"10.1109/ROPACES.2016.7465477","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465477","url":null,"abstract":"A new tri-mode banpass filter (BPF) using a half-wavelength spiral resonator center-loaded with two T-shaped open stubs has been presented. Analyzed by the odd- and even-mode method, an odd mode and two even modes of the proposed tri-mode resonator could be flexibly controlled by tuning the electrical length of the spiral resonators and T-shaped stubs. For demonstration purpose, a tri-mode filter example with passband centered at 1.8 GHz has been implemented.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"86 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":"115196142","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.2016.7465351
Jin Hanbing, Meng Cui
Based on a 2D particle-in-cell finite difference in time domain code, the generation of EMP in the high-power, short-pulse laser interaction with the target is discussed. First, the interaction of laser pulses with plasma is simulated and the information of hot electrons is obtained. Then, the process that escaping electrons moving in the vacuum generates EMP is simulated. The simulation shows a peak electromagnetic filed 100kV/m and a very broad frequency.
{"title":"Simulation of electromagnetic pulse generation in laser-plasma interaction","authors":"Jin Hanbing, Meng Cui","doi":"10.1109/ROPACES.2016.7465351","DOIUrl":"https://doi.org/10.1109/ROPACES.2016.7465351","url":null,"abstract":"Based on a 2D particle-in-cell finite difference in time domain code, the generation of EMP in the high-power, short-pulse laser interaction with the target is discussed. First, the interaction of laser pulses with plasma is simulated and the information of hot electrons is obtained. Then, the process that escaping electrons moving in the vacuum generates EMP is simulated. The simulation shows a peak electromagnetic filed 100kV/m and a very broad frequency.","PeriodicalId":101990,"journal":{"name":"2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES)","volume":"203 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":"116626408","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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