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2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting最新文献

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Full-wave analysis of PEC-embedded U-Slot microstrip patch elements 嵌入式pec u型槽微带贴片元件的全波分析
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805079
Dhivya Ketharnath, S. Walker, D. Chatterjee
{"title":"Full-wave analysis of PEC-embedded U-Slot microstrip patch elements","authors":"Dhivya Ketharnath, S. Walker, D. Chatterjee","doi":"10.1109/ANTEMURSI.2009.4805079","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805079","url":null,"abstract":"Cavity-backed slot antennas have been a popular choice for element design in conformal array antennas [1]. However in some cases it is actually desired to examine if microstrip patch elements can be used as replacements for slot antennas by embeding them in perfect conductors (PEC). The investigation reported here examines the VSWR and radiation patterns characteristics of a wideband U-Slot microstrip patch element used as a retro-fit (or substitute) for the cavity-backed slot radiating from a rectangular aperture in a PEC circular cylinder. Specifically, the results reported here examine the effects of curvature on the VSWR and equatorial (Θ = 90°) plane radiation patterns for increasing cylinder electrical radius, where Θ = 0° defines the cylinder generator axis.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122108973","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
Cross-polarization measurement chalenges in a spherical near-field test facility 球面近场测试设备中交叉偏振测量的挑战
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805111
L. Shafai, K. Oueng, Shantnu R. Mishra
{"title":"Cross-polarization measurement chalenges in a spherical near-field test facility","authors":"L. Shafai, K. Oueng, Shantnu R. Mishra","doi":"10.1109/ANTEMURSI.2009.4805111","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805111","url":null,"abstract":"Accurate cross polarization measurements present challenges to a test facility due to the difficulty of resolving low amplitude levels typically observed in these radiation patterns. The effectiveness of the near-field measurement set-up and acquisition, in addition to the post-processing of the collected near-field data are critical to the success of the measurement. This paper discusses recent experiences at resolving low-cross polarization levels in the spherical near-field facility at the Canadia Space Agency's David Florida Laboratory. Chamber alignment, measurement, and processing procedures are discussed and the results presented for characterization of a corrugated cylindrical waveguide.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121814712","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 K-band push-push oscillator using dielectric resonator 一种基于介电谐振腔的k波段推推振荡器
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805120
Takayuki Tanaka, M. Aikawa
{"title":"A K-band push-push oscillator using dielectric resonator","authors":"Takayuki Tanaka, M. Aikawa","doi":"10.1109/ANTEMURSI.2009.4805120","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805120","url":null,"abstract":"A push-push oscillator using dielectric resonator (DR) is presented. The push-push oscillator consists of two identical amplifiers, microstrip lines, one slot line and one DR. The TE01ä mode is dominant for the resonation in the DR at the fundamental frequency. Simplified structure is realized. The measured output power of the desired second harmonic signal (2f0) is 0 dBm at the frequency of 20.25 GHz. The measured phase noise performance at 20.25 GHz is −102.3 dBc/Hz at an offset frequency of 1 MHz.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123699692","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
Prototype of microwave imaging system for breast-cancer screening 用于乳腺癌筛查的微波成像系统原型
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805106
T. Rubaek, V. Zhurbenko
{"title":"Prototype of microwave imaging system for breast-cancer screening","authors":"T. Rubaek, V. Zhurbenko","doi":"10.1109/ANTEMURSI.2009.4805106","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805106","url":null,"abstract":"Microwave imaging for breast-cancer detection has received the attention of a large number of research groups in the last decade. In this paper, the imaging system currently being developed at the Technical university of Denmark is presented. This includes a description of the antenna system, the microwave hardware, and the imaging algorithm.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114194853","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
SKA antenna system verification plans SKA天线系统验证方案
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805105
N. Roddis, P. Dewdney
{"title":"SKA antenna system verification plans","authors":"N. Roddis, P. Dewdney","doi":"10.1109/ANTEMURSI.2009.4805105","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805105","url":null,"abstract":"The square Kilometre Arrat will be a radio telescope with sensitivity 50 times any existing radio telescope. Ambitious targets have been set for antenna and receiver front end performance. This paper discusses the development programs to address these.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121853631","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
Investigation into phase quantization effects of synthesized array factor having a main beam and a prescribed null using a Dolph-Chebyshev array 用道尔夫-切比雪夫阵列研究具有主波束和规定空点的合成阵列因子的相位量化效应
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805050
M. Caillet, M. Clénet, Y. Antar
{"title":"Investigation into phase quantization effects of synthesized array factor having a main beam and a prescribed null using a Dolph-Chebyshev array","authors":"M. Caillet, M. Clénet, Y. Antar","doi":"10.1109/ANTEMURSI.2009.4805050","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805050","url":null,"abstract":"Investigations into the phase quantization effects for a 16-element Dolph-Chebyshev linear array with half-wavelength element spacing and digital phase shifters are reported in this article for an array factor having a main beam and a prescribed null. The main beam is fixed, and the prescribed null angular position varies between 1 and 60°. Based on results with perfect phase, the effects of phase quantization on the radiation characteristics are studied. Particularly, one can notice that the main beam angular position and half-power beamwidth errors are negligible. However, phase quantization greatly affects the prescribed null position and depth, proportionally to the sidelobe ratio.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114958143","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
Wideband reflectarray research at the Communications Research Centre Canada 加拿大通信研究中心宽带反射研究
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805053
M. R. Chaharmir, J. Shaker, M. Cuhaci, A. Ittipiboon
{"title":"Wideband reflectarray research at the Communications Research Centre Canada","authors":"M. R. Chaharmir, J. Shaker, M. Cuhaci, A. Ittipiboon","doi":"10.1109/ANTEMURSI.2009.4805053","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805053","url":null,"abstract":"This paper provides an overview of different types of ring geometries that have been investigated recently in Communications Research Centre Canada as the building block of wideband reflectarray elements. The superior performance of these reflectarrays in terms of operating bandwidth was demonstrated experimentally. Techniques for the design of wideband reflectarray with ring type elements will be presented.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129916379","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
Loaded annular ring antennas for multi-frequency operation 用于多频率工作的负载环形天线
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805084
S. Latif, L. Shafai
{"title":"Loaded annular ring antennas for multi-frequency operation","authors":"S. Latif, L. Shafai","doi":"10.1109/ANTEMURSI.2009.4805084","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805084","url":null,"abstract":"Multi-frequency operation is obtained from the single-layer probe-fed annular ring antenna by loading it with a gap or slit. Two unloaded modes are excited around the dominant TM11 mode of the ring, equally spaced on the frequency spectrum. These multiple modes are excited, if the loading is symmetric on one side in one axis, and the excitation is off-centered on another side, or vice-versa. By choosing the location of the vertical or horizontal gaps along y- or x-axis respectively, the polarization of each mode can be controlled. One of the loaded mode frequencies is much lower than the dominant TM11 mode frequency of the annular ring, indicating a miniaturization of antenna to a great extent. Simulation results are confirmed by measurements.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125365566","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
Narrowband signal detection in correlated Rayleigh fading with a moving antenna 移动天线相关瑞利衰落下的窄带信号检测
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805049
A. Broumandan, J. Nielsen, G. Lachapelle
{"title":"Narrowband signal detection in correlated Rayleigh fading with a moving antenna","authors":"A. Broumandan, J. Nielsen, G. Lachapelle","doi":"10.1109/ANTEMURSI.2009.4805049","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805049","url":null,"abstract":"The performances of a single moving antenna receiver in detecting a narrowband signal in a correlated Rayleigh fading is considered. The single moving antenna captures spatial samples during antenna displacement that provides a realization of a synthetic antenna array. It is shown that there is a net processing gain in applying synthetic antenna array over keeping antenna stationary. This processing gain is subject to have uncorrelated signals at different antenna position. This paper examines the performance of synthetic array in correlated Rayleigh fading environment. An optimum detector based on Estimator-Correlator (EC) is developed and its performance is compared with that of non-coherent suboptimal Equal-Gain (EG) combiner in different channel correlation scenarios. An extensive set of measurements based on CDMA-2000 pilot signals using stationary and moving antennas are used to experimentally verify these theoretical findings.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116334315","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: 7
Three-dimensional defect reconstruction from MFL signals using space mapping optimization.. 基于空间映射优化的MFL信号三维缺陷重建
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805104
M. Ravan, R. Amineh, S. Koziel, N. Nikolova, J. Reilly
{"title":"Three-dimensional defect reconstruction from MFL signals using space mapping optimization..","authors":"M. Ravan, R. Amineh, S. Koziel, N. Nikolova, J. Reilly","doi":"10.1109/ANTEMURSI.2009.4805104","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805104","url":null,"abstract":"In this paper, we propose a new procedure to estimate the shape of the opening and the depth profile of an arbitrary three-dimentional (3-D) defect from magnetic flux leakage (MFL) measurements. We first use the Canny edge detection algorithm to estimate the shape of the depect opening. Then we use an inversion procedure based on the spave mapping (SM) methodology in order to approximate the defect depth profile efficiently. To demonstrate the accuracy of the proposed inversion technique, we reconstruct two defects of arbitrary shapes from simulated MFL signals. In both cases, the comparison of the actual and reconstructed defects validate the proposed technique","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126386976","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
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