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2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)最新文献

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Loss reduction of printed meanderline dipole antenna using laminated conductors 用层压导体降低弯曲线偶极子天线的损耗
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887656
R. Raju, L. Shafai
{"title":"Loss reduction of printed meanderline dipole antenna using laminated conductors","authors":"R. Raju, L. Shafai","doi":"10.1109/ANTEM.2014.6887656","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887656","url":null,"abstract":"Losses in a thin solid conducting element can be reduced significantly by the use of a composite conducting medium consisting of stacked layers of thin laminated conductors, where the laminations are constituted by low loss dielectric of thickness comparable to the skin depth of the conductor. In this paper the application of this concept to a printed meander line antenna is presented. It is seen through simulations that using the proposed technique around 40% improvement in efficiency was obtained.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121232965","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
Development of the Dish Verification antenna-1 for the Square Kilometre Array 平方公里阵碟形验证天线-1的研制
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887671
G. Hovey, G. Lacy, P. Byrnes, J. Fitzsimmons, M. Fleming
{"title":"Development of the Dish Verification antenna-1 for the Square Kilometre Array","authors":"G. Hovey, G. Lacy, P. Byrnes, J. Fitzsimmons, M. Fleming","doi":"10.1109/ANTEM.2014.6887671","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887671","url":null,"abstract":"The Square Kilometre Array (SKA) requires roughly 2000+ 15m reflector antennas to implement a radio telescope with a collecting area equivalent to 1 million square metres. The cost and performance of these antennas impact the telescope significantly. In this paper we report the results of developing the SKA Dish Verification Antenna-1 - a novel 15m dual offset Gregorian design using single-piece rim supported primary and secondary reflectors made of carbon reinforced plastic which yield cost and performance advantages.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124093366","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
Open-ended waveguide antenna excitation with microstrip patch elements 微带贴片元件的开放式波导天线激励
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887742
Z. A. Pour, L. Shafai
{"title":"Open-ended waveguide antenna excitation with microstrip patch elements","authors":"Z. A. Pour, L. Shafai","doi":"10.1109/ANTEM.2014.6887742","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887742","url":null,"abstract":"In this paper, a new method is presented to excite an open-ended circular waveguide feed. A circular microstrip patch element is embedded near the bottom end of the waveguide, which excites the dominant TE11 mode at the aperture of the antenna. The technique is simple and capable of generating a relatively pure mode over a respectable frequency band. The technique eliminates the need of using a waveguide transition for the feeding network. In terms of volume, the proposed technique leads to a less bulky structure as opposed to the conventional probe excitation method in waveguides, which laterally occupies more space since it is perpendicular to the waveguide wall.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"40 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127746415","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
An oscillator array using push-push oscillators and very simple coupling circuits 使用推推振荡器和非常简单的耦合电路的振荡器阵列
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887704
Takayuki Tanaka, T. Sameshima, M. Aikawa, I. Toyoda
{"title":"An oscillator array using push-push oscillators and very simple coupling circuits","authors":"Takayuki Tanaka, T. Sameshima, M. Aikawa, I. Toyoda","doi":"10.1109/ANTEM.2014.6887704","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887704","url":null,"abstract":"A novel Push-Push oscillator array with simple structure is proposed. The Push-Push oscillators are connected via a coupling circuit whose structure is very simple. The phase shift between the output signals of the oscillators is achieved by controlling the phase difference of the reflection coefficients of the coupling circuit. The phase difference is changed by the bias voltage of the HEMT used for the coupling circuit. The basic performance of the oscillator array using two Push-Push oscillators is investigated. The phase shift produced between the output signals of two oscillators is 114 degrees at 15.4 GHz.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115664694","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
Some novel properties of asymmetric adaptive medium to large aperture antennas 非对称自适应中大孔径天线的一些新特性
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887743
Z. A. Pour, L. Shafai
{"title":"Some novel properties of asymmetric adaptive medium to large aperture antennas","authors":"Z. A. Pour, L. Shafai","doi":"10.1109/ANTEM.2014.6887743","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887743","url":null,"abstract":"The talk will focus on intriguing properties of asymmetrical adaptive large and medium aperture antennas. Several adaptive medium size antennas will be discussed to demonstrate their attractive potentials as primary feeds. First, an adaptive virtual array is realized in a single large aperture antenna such as a parabolic reflector. Both symmetric and offset reflector structures will be addressed. Second, the realization of frequency re-use antennas is explained through the use of adaptive matched primary feeds in asymmetrical offset reflectors. The electromagnetic requirements to attain such distinctive features will be fully explained.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123642490","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
Modified Gaussian elimination technique using at each step an equation with original coefficients 改进的高斯消去技术，在每一步使用一个方程与原始系数
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887698
I. Ciric
{"title":"Modified Gaussian elimination technique using at each step an equation with original coefficients","authors":"I. Ciric","doi":"10.1109/ANTEM.2014.6887698","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887698","url":null,"abstract":"The first n-1 equations of a general n-by-n linear algebraic system are first made homogeneous. Then, the first unknown is eliminated from the equations 2, 3, ..., n-1, with the n-th equation kept in its original form. A first solution of the equations 2 to n-1 and of the n-th equation is obvious. If a second, independent solution of these equations is found, the solution of the original system will be determined from a linear combination of the two solutions by imposing the condition that its 1-st equation is also satisfied. This second solution is obtained in the same way, as the solution of an (n-1)-by-(n-1) system whose last equation only contains coefficients in the original n-th equation. After the elimination process is completed, the solution of the original system is derived by a backward substitution. The computational complexity in n3 is the same as in the classical Gaussian elimination, but the new method presents an improved stability and accuracy as shown in numerical experiments with infinite systems encountered in the analysis of electric fields in multiple-sphere configurations.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122121261","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
Stepped impedance resonator technique for metamaterial miniaturization 超材料微型化的阶梯阻抗谐振器技术
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887715
T. Denidni, B. Zarghooni
{"title":"Stepped impedance resonator technique for metamaterial miniaturization","authors":"T. Denidni, B. Zarghooni","doi":"10.1109/ANTEM.2014.6887715","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887715","url":null,"abstract":"This paper investigates a novel method based on the application of stepped impedance resonator technique used for miniaturization of metamaterial unit-cells. The effect of this technique on the S parameters of well-known rectangular and circular metamaterial unit-cells is studied and it is shown that this technique works well for both type of structures.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124088042","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
Synthesis and design of direct-coupled rectangular waveguide filters with arbitrary inverter sequence 任意逆变顺序直接耦合矩形波导滤波器的合成与设计
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887723
Qianqian Wang, J. Bornemann
{"title":"Synthesis and design of direct-coupled rectangular waveguide filters with arbitrary inverter sequence","authors":"Qianqian Wang, J. Bornemann","doi":"10.1109/ANTEM.2014.6887723","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887723","url":null,"abstract":"A framework for the design of direct-coupled waveguide filters with both impedance and admittance inverters is presented. Combinations of sequences of four different inverter structures permit the use of both half-wave and quarter-wave resonators as well as the creation of transmission zeroes to the left and right of the passband. Many different and new filter designs are presented for common filter specifications and demonstrate the variety of possible design realizations. The difference between synthesized and optimized responses is explained. The coupled-integral equation technique is used for fast component design, and final performances are validated by the commercial software package μWaveWizard. Filter dimensions are provided.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124790330","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
Sensitivity of the singularity expansion method applied on dipole antenna backscattering 偶极子天线后向散射奇异展开法的灵敏度
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887736
F. Sarrazin, A. Sharaiha, P. Pouliguen, J. Chauveau, P. Potier
{"title":"Sensitivity of the singularity expansion method applied on dipole antenna backscattering","authors":"F. Sarrazin, A. Sharaiha, P. Pouliguen, J. Chauveau, P. Potier","doi":"10.1109/ANTEM.2014.6887736","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887736","url":null,"abstract":"This paper deals with the sensitivity of the singularity expansion method to identify antennas. A dipole antenna is considered and the matrix pencil method is applied on its backscattered field. Then, small variations of length, diameter and load impedance are applied on the dipole antenna and the variation of poles in the complex plane is analyzed. It shows that pole extraction is very sensitive to the dimensions and load impedance of the narrow band dipole antenna.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125030442","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
The cloverleaf antenna: A compact wide-bandwidth dual-polarization feed for CHIME 三叶草天线:用于CHIME的紧凑型宽频带双极化馈源
2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI: 10.1109/ANTEM.2014.6887670
Meiling Deng, D. Campbell-Wilson
{"title":"The cloverleaf antenna: A compact wide-bandwidth dual-polarization feed for CHIME","authors":"Meiling Deng, D. Campbell-Wilson","doi":"10.1109/ANTEM.2014.6887670","DOIUrl":"https://doi.org/10.1109/ANTEM.2014.6887670","url":null,"abstract":"We have developed a compact, wide-bandwidth, dual-polarization cloverleaf-shaped antenna to feed the CHIME radio telescope. The antenna has been tuned using CST to have smaller than -10dB s11 for over an octave of bandwidth, covering the full CHIME band from 400MHz to 800MHz and this performance has been confirmed by measurement. The antennas are made of conventional low loss circuit boards and can be mass produced economically, which is important because CHIME requires 1280 feeds. They are compact enough to be placed 30cm apart in a linear array at any azimuthal rotation.","PeriodicalId":190987,"journal":{"name":"2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128941776","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: 24
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