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Dipole antenna performance using a woodpile substrate at microwave frequencies 微波频率下木桩基板偶极子天线的性能
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852106
A. Labajos, B. Martínez, J. Teniente, J. Iriarte, I. Ederra, R. Gonzalo, P. Maagt
{"title":"Dipole antenna performance using a woodpile substrate at microwave frequencies","authors":"A. Labajos, B. Martínez, J. Teniente, J. Iriarte, I. Ederra, R. Gonzalo, P. Maagt","doi":"10.1109/ANTEM.2005.7852106","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852106","url":null,"abstract":"In this paper, a woodpile structure fabricated at microwave frequencies has been completely characterised. The improvements of the antenna characteristic when it is used as backward substrate have been proved. In particular, a good matching and much more directivity radiation pattern are obtained. Good agreement has been found between measurements and simulations.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129220625","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: 0
Technological sensitivity of nonintuitive GA Optimized printed antennas 非直观遗传算法优化印刷天线的技术灵敏度
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852056
D. Cormos, R. Loison, R. Gillard
{"title":"Technological sensitivity of nonintuitive GA Optimized printed antennas","authors":"D. Cormos, R. Loison, R. Gillard","doi":"10.1109/ANTEM.2005.7852056","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852056","url":null,"abstract":"In this article, several GA Optimized antennas with nonintuitive shapes are fabricated and measured. The technological sensitivities for the different realized prototypes are compared. This study points out the high technological sensitivity of antennas with unconventional geometries. The results of this study give rules allowing to directly reject from the optimization process the structures which are too sensitive.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125407846","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: 0
A shaping technique of substrate lens antennas with genetic algorithm 基于遗传算法的基板透镜天线整形技术
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852082
G. Godi, R. Sauleau, L. Le Coq
{"title":"A shaping technique of substrate lens antennas with genetic algorithm","authors":"G. Godi, R. Sauleau, L. Le Coq","doi":"10.1109/ANTEM.2005.7852082","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852082","url":null,"abstract":"A powerful optimization procedure of substrate lens antennas has been proposed at millimeter wave frequencies. Compared to previous works, this approach is global and thus does not require the a priori knowledge of an initial lens profile computed with conventional GO-based synthesis techniques. Our design methodology combines a genetic algorithm with an efficient asymptotic analysis of the radiation characteristics of 3D substrate lens antennas.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126440947","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: 12
A 360° beam switching monopole antenna for automotive radar 一种用于汽车雷达的360°波束开关单极天线
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852048
S. Chainon, L. Le Garrec, M. Himdi
{"title":"A 360° beam switching monopole antenna for automotive radar","authors":"S. Chainon, L. Le Garrec, M. Himdi","doi":"10.1109/ANTEM.2005.7852048","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852048","url":null,"abstract":"Our works presented here consisted in validate a concept of beam scanning used for automotive radar. A 2.45 GHz antenna, used as demonstrator, was designed. The principle is based on Yagi-Uda antennas, with a fed monopole and two loaded parasitic ones. Then, beam scanning is accomplished uniquely by properly switching parasitic loads. Concept, simulations and even experimental results are provided, and demonstrate the ability to achieve a 360° beam scanning antenna. This simple structure offers the advantage of easy manufacturing compared to lens solution, and can potentially meet specifications for collision avoidance radar in millimeter-wave frequencies.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115960985","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
Application of genetic algorithm for constrained metal plate lens profile optimization 遗传算法在约束金属板透镜廓形优化中的应用
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852096
E. Jehamy, Max Salaün, M. Ney, G. Landrac
{"title":"Application of genetic algorithm for constrained metal plate lens profile optimization","authors":"E. Jehamy, Max Salaün, M. Ney, G. Landrac","doi":"10.1109/ANTEM.2005.7852096","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852096","url":null,"abstract":"For specific applications such as Assisted Cruise Control (ACC) systems, the radar operating at 76 GHz requires short and long-range detection. Specifications require high gain, which imposes electrically large focusing elements. In addition, requirement for rather low side-lobe level necessitates some optimization techniques. As the size is several wavelengths, a rapid technique such as Geometrical Optics (GO) should be used for analysis, which allows an efficient design technique when associated with Genetic Algorithm (GA). The design of constrained metal plate lenses is presented and results show that both GA and GO techniques provide an efficient tool for design of electrically large focusing elements.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"14 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123798832","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
Development of a Phased-Array feed Demonstrator for radio telescopes 射电望远镜相控阵馈电演示器的研制
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852186
B. Veidt, P. Dewdney
{"title":"Development of a Phased-Array feed Demonstrator for radio telescopes","authors":"B. Veidt, P. Dewdney","doi":"10.1109/ANTEM.2005.7852186","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852186","url":null,"abstract":"Future centimetre-wavelength radio telescopes will use low-noise phased arrays as feed antennas. Two key reasons for developing this technology is that it enables the radio telescope to have several simultaneous beams on the sky, increasing the speed of the instrument, and because it allows the properties of the feed to be optimised. However, to date only two experimental demonstrations of phased-array feeds on radio telescopes have been performed. We are in the planning stages of an array that will thoroughly demonstrate the capabilities of this technology. This engineering demonstrator will consist of an array of Vivaldi antennas feeding low-noise amplifiers. After amplification the signal will be down-converted and digitized. This data will be stored for off-line beamforming on desktop computers. From these data sets we will be able to demonstrate not only rudimentary beamforming, but also more sophisticated operations such as optimisation of the feed pattern and interference cancellation. Current plans and progress of this project will be reviewed.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131253968","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: 27
Reflectarray with integrated band reject filter for MEMS based beamforming applications 基于MEMS波束形成应用的集成带抑制滤波器反射阵列
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852024
S. Avrillon, L. Mercier, A. Pothier, P. Blondy
{"title":"Reflectarray with integrated band reject filter for MEMS based beamforming applications","authors":"S. Avrillon, L. Mercier, A. Pothier, P. Blondy","doi":"10.1109/ANTEM.2005.7852024","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852024","url":null,"abstract":"A microstrip reflectarray is a low profile antenna consisting of an array of radiators illuminated by a feed as shown on Fig. 1. Beamforming techniques and performances have been widely studied to improve spherical wave to plane wave transformation using patches of variable sizes for instance [1,2], or stub loaded patches [3], or variable slots in ground plane [4]. These approaches are based on the same principle: having elementary antennas with identical reflection magnitude but controlled reflection phase. Any incident and reflecting configurations can be realized, limited by elementary antenna radiating performances.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131392319","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: 0
Design of a prime-focus 16–26 GHz horn for the Parkes radio telescope 帕克斯射电望远镜16 - 26ghz定焦喇叭的设计
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852083
C. Granet, R. Gough
{"title":"Design of a prime-focus 16–26 GHz horn for the Parkes radio telescope","authors":"C. Granet, R. Gough","doi":"10.1109/ANTEM.2005.7852083","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852083","url":null,"abstract":"A corrugated horn for the Parkes radio telescope has been optimized to cover the 16–26 GHz band and to provide an efficient illumination of the reflector. Two additional horn to cover the narrower 20–24 GHz and 21.6–22.1 GHz bands have also been designed. The 20–24 GHz and 21.6– 22.1 GHz horns display better G/Tsystem performance as demonstrated by Fig. 7. As the three horns are highly optimised, we also checked that the return loss (RL) did not have any spikes in the band of interest. We have used CST MicroWave Studio to calculate a RL-sweep for each of the horns. As can be seen in Fig. 10, the RL is better than 20 dB across each band for the three horns and do not show any spikes.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133017003","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
Novel external smart antenna array for IEEE 802.11a wireless LAN applications 用于IEEE 802.11a无线局域网应用的新型外部智能天线阵列
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852191
Mohsen Hatami Yazd, R. Faraji-Dana
{"title":"Novel external smart antenna array for IEEE 802.11a wireless LAN applications","authors":"Mohsen Hatami Yazd, R. Faraji-Dana","doi":"10.1109/ANTEM.2005.7852191","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852191","url":null,"abstract":"Design and simulation of a smart antenna system for 802.11a wireless LAN is proposed. The main advantage of this design is that it is applicable as an external antenna module, regardless of the other parts of the system i.e. the WLAN card. The antenna is a 3×3 planar array of rectangular patches, in the 5.15GHz ∼ 5.35GHz band. The antennas are probe-fed so that they can be connected to separate phase shifters or switches. Suggestions have been made to make use of a minimum number of phase shifters. Simulations include all possible mutual coupling effects. A switched-beam algorithm is applied to single user, double and triple user environment. A minimum 15 dB increase in the received signal gain and 5 dB increase in SIR are achieved. In a reduced mode of the smart array using only 4 phase shifters, at least 3 dB increase is observed in SIR.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115185452","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: 0
Design of antennas for transient ultra wide band (UWB) systems 瞬态超宽带(UWB)系统天线设计
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852064
J. Diot, B. Beillard, J. Andrieu, M. Lalande, B. Jecko
{"title":"Design of antennas for transient ultra wide band (UWB) systems","authors":"J. Diot, B. Beillard, J. Andrieu, M. Lalande, B. Jecko","doi":"10.1109/ANTEM.2005.7852064","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852064","url":null,"abstract":"UWB planar antenna under development should allow to obtain a compact printable antenna which should be able to be integrated into low cost systems. Its disadvantages are holes at certain frequencies in its radiation pattern and a dependence of its low frequency limit with the size of ground plane. The UWB wire patch antenna offers a rather clean radiation pattern and a good matching on the bandwidth. Its advantage is a great compactness compared to antennas such as UWB monopole. Moreover its bandwidth does not depend on the size of the ground plane. Its disadvantage is a more difficult integration and a higher cost compared to printable antenna.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123617446","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: 11
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