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2013 Loughborough Antennas & Propagation Conference (LAPC)最新文献

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Broadband differential antenna for full-wave RF energy scavenging system 全波射频能量清除系统宽带差分天线
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-12-01 DOI: 10.1109/LAPC.2013.6711912
Yi Ding, T. Arslan
{"title":"Broadband differential antenna for full-wave RF energy scavenging system","authors":"Yi Ding, T. Arslan","doi":"10.1109/LAPC.2013.6711912","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711912","url":null,"abstract":"This research work demonstrated in this paper is part of a larger project that aims to design high efficiency miniaturized RF energy scavenging system. In this paper, a broadband differential antenna is designed for a full-wave RF energy scavenging system. Simulation results demonstrate that the proposed antenna shows a wide bandwidth of 3.48 GHz based on S parameters <; -10 dB, covering most of the wireless communication bands which include GPS (L1: 1575.42 MHz, L2: 1227.60 MHz, L3: 1381.05 MHz, L4: 1379.913 MHz, L5: 1176.45 MHz), DCS (1710-1880 MHz), PCS (1850-1990 MHz), UMTS (1920-2170 MHz), WiFi/WLAN/Hiper LAN/IEEE 802.11 2.4 GHz (2412-2484 MHz), 3.6 GHz (3657.5-3690.0 MHz), Bluetooth (2400-2484 MHz), WiMAX 2.3 GHz (2.3-2.5 GHz), 2.5 GHz (2500-2690 MHz). 3.3 GHz and 3.5 GHz (3400-3600 MHz) & LTE applications.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113965648","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
Wavelet de-noising based microwave imaging for brain cancer detection 基于小波去噪的微波成像脑癌检测
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-12-01 DOI: 10.1109/LAPC.2013.6711946
Haoyu Zhang, T. Arslan, B. Flynn
{"title":"Wavelet de-noising based microwave imaging for brain cancer detection","authors":"Haoyu Zhang, T. Arslan, B. Flynn","doi":"10.1109/LAPC.2013.6711946","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711946","url":null,"abstract":"In microwave imaging for brain cancer detection, signals are generally degraded by noise. In this paper, we investigate the use of Discrete Wavelet Transform (DWT) based signal processing to improve the noise performance of an UWB based microwave imaging system for brain cancer detection. To test the noise suppression properties of the DWT, firstly, Gaussian white noise is added to the received pulse in a simulated microwave imaging system, such that the signal-to-noise ratios (SNRs) are 60dB and 45dB, respectively. These noisy signals are then processed and de-noised using the DWT. The de-noised signals are used to create cross-sectional images of a cancerous brain model, with the tumour highlighted. These resulting images demonstrate the validity of a DWT based de-noising method for brain cancer detection.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132489089","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
Study of the directivity of a half-loop antenna coupled with magnetic metamaterial cells 磁性超材料单元耦合半环形天线的方向性研究
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-11 DOI: 10.1109/LAPC.2013.6711874
E. Ramanandraibe, M. Latrach, W. Abdouni, A. Sharaiha
{"title":"Study of the directivity of a half-loop antenna coupled with magnetic metamaterial cells","authors":"E. Ramanandraibe, M. Latrach, W. Abdouni, A. Sharaiha","doi":"10.1109/LAPC.2013.6711874","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711874","url":null,"abstract":"The effect of associating Split Ring Resonators (SRR) or C resonators cells with a half-loop antenna is studied. Adding SRRs will shift down considerably the resonance frequency but the directivity will be almost the same. SRRs are good candidate for antenna miniaturization. Adding C resonators will increase more the directivity while the frequency shifting is not as important as with SRR cells. With a ground plane of 10 cm × 10 cm, two cells of C resonators coupled with a half-loop antenna can have a directivity of 7.35 dB at 920.4 MHz. The ground plane can be increased to get better performances.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128191175","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
Superdirective and low profile metamaterial-inspired antenna 超指令和低调的超材料天线
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-11 DOI: 10.1109/LAPC.2013.6711915
S. Dakhli, J. Floch, K. Mahdjoubi, H. Rmili, F. Choubani
{"title":"Superdirective and low profile metamaterial-inspired antenna","authors":"S. Dakhli, J. Floch, K. Mahdjoubi, H. Rmili, F. Choubani","doi":"10.1109/LAPC.2013.6711915","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711915","url":null,"abstract":"In this paper, a superdirective and low profile metamaterial-inspired antenna is reported. The proposed structure consists of the association of Split-Ring Resonator (SRR) and a monopole. This antenna of ka = 0.65 size works in the UHF band and exhibits a high directivity of 4.41dBi in the matched bandwidth of 25 MHz (-10dB). Simulated and measured results are presented for the return loss and radiation pattern.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133764378","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
Optimization of rectangular ridge waveguides using PSO 矩形脊波导的粒子群优化
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-01 DOI: 10.1109/LAPC.2013.6711929
M. Simone, A. Fanti, G. Mazzarella
{"title":"Optimization of rectangular ridge waveguides using PSO","authors":"M. Simone, A. Fanti, G. Mazzarella","doi":"10.1109/LAPC.2013.6711929","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711929","url":null,"abstract":"In this work we present an application of the Particle Swarm Optimization algorithm to the design of ridge waveguides. The main requirements of a large bandwidth, and a good power handling capability has been both included, and different solution have been found, depending on the relative weights.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116755294","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
Active integrated fiber-coupled receiving antenna 有源集成光纤耦合接收天线
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-01 DOI: 10.1109/LAPC.2013.6711897
N. Neumann, Stephan Frach, D. Plettemeier
{"title":"Active integrated fiber-coupled receiving antenna","authors":"N. Neumann, Stephan Frach, D. Plettemeier","doi":"10.1109/LAPC.2013.6711897","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711897","url":null,"abstract":"Radio-over-Fiber (RoF) networks take advantage of the high bandwidth and low losses of optical media to transport RF signals on an optical carrier. The highest level of convergence can be achieved by Fiber-to-the-Antenna (FTTA) setups. We demonstrate a highly integrated fiber-coupled receiving antenna that can be directly connected to a standard optical network. Without the need of external instrumentation, the antenna itself holds all necessary circuitry to convert the received signal to optical domain, i.e. a laser diode as well as its driver and preamplifiers. Using a Vivaldi antenna, a high relative bandwidth of 133% can be reached. The design and optimization of the antenna together with the electronics is shown and antenna system results are given and discussed.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127511474","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
A compact dual-feed water-based diversity antenna 一种紧凑的双馈水基分集天线
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-01 DOI: 10.1109/LAPC.2013.6711878
S. Alja'afreh, Yi Huang, Lei Xing
{"title":"A compact dual-feed water-based diversity antenna","authors":"S. Alja'afreh, Yi Huang, Lei Xing","doi":"10.1109/LAPC.2013.6711878","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711878","url":null,"abstract":"A dual-feed, water-based dielectric resonant antenna (DRA) is proposed for hand portables. It works over 2.4 to 3.34 GHz to cover 2.43 GHz WLAN, Bluetooth, three LTE bands (band 7, band 38 and band 41) and 2.63 S-DMB band. A ground defect structure is employed to provide a decoupling path between the antenna ports, and at the same time it increases the radiation efficiency of the structure because it acts as a radiator. Simulated results are presented to validate this new design which occupies a very small space.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125871078","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: 10
Two-pole filtering antenna for body centric communications 用于身体中心通信的两极滤波天线
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-01 DOI: 10.1109/LAPC.2013.6711887
D. Wolanský, V. Hebelka, Z. Raida
{"title":"Two-pole filtering antenna for body centric communications","authors":"D. Wolanský, V. Hebelka, Z. Raida","doi":"10.1109/LAPC.2013.6711887","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711887","url":null,"abstract":"This paper deals with the design of the two-pole filtering antenna based on SIW (substrate integrated waveguide) resonator coupled by rectangular iris to the rectangular patch antenna for body centric communication. Firstly, we present the design of the filtering antenna. Secondly, the change of the antenna parameters influenced by the proximity of the human tissue is studied; especially its gain characteristic and radiation patterns. In order to tune the antenna simplified multilayered model of human tissue is applied. Optimized antenna is then used in the complex model of the human body to verify the antenna properties.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116572157","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
Circular truncated patch antennas for energy harvesting applications 用于能量收集应用的圆形截断贴片天线
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-01 DOI: 10.1109/LAPC.2013.6711922
A. Sabaawi, C. Tsimenidis
{"title":"Circular truncated patch antennas for energy harvesting applications","authors":"A. Sabaawi, C. Tsimenidis","doi":"10.1109/LAPC.2013.6711922","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711922","url":null,"abstract":"In this paper, an edge-fed quarter-wave matched circularly polarized microstrip antenna with a circular truncated patch and 2-by-1 T-junction planar array configuration are studied using finite element method (FEM) based simulator. The aim of the work is to investigate the microstrip antennas feasibility in capturing energy from ambient EM radiation and converting it into direct electric power. The results obtained demonstrate an acceptable agreement between the simulated and measured results.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122844006","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
Performance analysis of least mean square sample matrix inversion algorithm for smart antenna system 智能天线系统最小均方矩阵反演算法的性能分析
2013 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2013-11-01 DOI: 10.1109/LAPC.2013.6711976
Weal A. E. Ali, D. Mohamed, A. G. Hassan
{"title":"Performance analysis of least mean square sample matrix inversion algorithm for smart antenna system","authors":"Weal A. E. Ali, D. Mohamed, A. G. Hassan","doi":"10.1109/LAPC.2013.6711976","DOIUrl":"https://doi.org/10.1109/LAPC.2013.6711976","url":null,"abstract":"Beamforming is a signal processing technique that has the ability to direct the main beam toward signal-of-interest and the null toward signal-of-not-interest without moving antenna array. This technique is achieved by using algorithms which change the amplitude and phase of array pattern continuously. This paper presents hybrid algorithm that is a combination of two algorithms, least mean square algorithm and sample matrix inversion algorithm. The hybrid algorithm (least mean square/sample matrix inversion) is applied on an array of dipoles to overcome the shortcomings of existing algorithms for a robust smart antenna system. To focus the main beam toward the desired direction and place the null in the direction of the interference signals, the weights of the inversion matrix in sample matrix inversion are calculated and these weights will be the initial weights in least mean square algorithm. The merit of this approach solves the convergence speed problem of the least mean square algorithm as well as the computation intensive exists in sample matrix inversion algorithm and decreases the least mean square error. The simulation results indicate the analyses of least mean square, sample matrix inversion and hybrid algorithm performances .These techniques are compared and verified using MATLAB.","PeriodicalId":206296,"journal":{"name":"2013 Loughborough Antennas & Propagation Conference (LAPC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121866531","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: 19
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