2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference最新文献_第7页

Waveguide filters with multiple passbands and stopbands achieved by bed of nails implanted within sidewall dielectric loadings 具有多个通带和阻带的波导滤波器通过在侧壁介质负载内植入钉床来实现

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552516

M. Kehn, E. Rajo-Iglesias, O. Quevedo–Teruel

{"title":"Waveguide filters with multiple passbands and stopbands achieved by bed of nails implanted within sidewall dielectric loadings","authors":"M. Kehn, E. Rajo-Iglesias, O. Quevedo–Teruel","doi":"10.1109/ANTEM.2010.5552516","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552516","url":null,"abstract":"Lately, there had been keen explorations into a new type of novel waveguide that enjoys, over a wide bandwidth, the desirable trait of having only one TEM mode propagating along just the direction of a metallic rectangular ridge embossed onto a wall of a parallel-plate waveguide and existing only within the resultant ridge-gap, achieved by a textured high-impedance surface surrounding the ridge which suppresses the propagation of global TEM modes along all other directions. Referred to as gap-waveguides [1], a typical bandgap structure that has been used is the so-called bed-of-nails comprising simply an array of grounded metallic pins [2]. Motivated by the broadband nature of such high-impedance surfaces, it could hence also be interesting and worthwhile to investigate how such a pin-lattice, when implanted within the sidewall dielectric slab-loadings of a rectangular waveguide, could affect the bandgap properties. An asymptotic treatment of this pin-lattice loaded waveguide is proposed, through the use of classical analysis by vector potentials and assuming a “TEM-to-slab-surface-normal” solution inside the pin-lattice layer. Hence, the approach is plausible only within the premise of diminishingly small pin-periods, i.e. the spatial density of the pins tends to infinity. Nevertheless, this method provides extremely rapid analysis processes as compared to full-wave solvers, which is vital for design and optimization procedures","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122370542","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

Gallium nitride hybrid microwave circuits for low-noise applications 低噪声应用的氮化镓混合微波电路

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552565

T. Ross, G. Cormier, K. Hettak

引用次数: 4

MEMS-4-MMIC: Advances in combined GaAs MEMS-MMIC technology MEMS-4-MMIC:结合GaAs MEMS-MMIC技术的进展

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552490

L. Baggen, W. Simon, R. Malmqvist, T. Vaha-Heikkila, D. Smith

引用次数: 2

Improved closed form solution for center fed straight wire antennas 改进的中心馈电直线天线闭合形式解决方案

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552542

Shoukry I. Shams El-Din, M. Fahmy, Tamer M. Aboulfadl

引用次数: 1

Microwave characterization of optically sensitive polymer and application to a tunable antenna 光敏聚合物的微波特性及其在可调谐天线中的应用

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552531

T. Morolari, L. Roy, B. Syrett

{"title":"Microwave characterization of optically sensitive polymer and application to a tunable antenna","authors":"T. Morolari, L. Roy, B. Syrett","doi":"10.1109/ANTEM.2010.5552531","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552531","url":null,"abstract":"This paper investigates the use of a photoconductive polymer to optically tune a microwave device or antenna. The dielectric properties of a composite (Polymer + Cadmium Sulphide) photoconductive polymer are extracted using microwave reflection measurements on a coplanar waveguide test structure. The material under test was overlaid on an interdigitated capacitor that was fabricated on a transparent glass substrate. The material characterization was done with and without broadband optical illumination. The results obtained from the characterization show that the polymer was photoconductive. An extracted dielectric constant (εr) of 4 and loss tangent (tanδ) of 0.004 were obtained without illumination, while the loss tangent increased to 0.11 with illumination and the εr value had no measureable change. The properties of the novel photoconductive polymer were used in the theoretical design of an optically tunable dipole antenna for the GSM band (1900 to 2100 MHz). Tunability was achieved by applying the characterized polymer to a slotted segment of the dipole arm, and effectively changing the dipole length by optical illumination","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121680365","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

Comparison of two different simulation methods for the design of reflect-arrays 两种不同的反射阵列设计仿真方法的比较

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552507

F. Safari, L. Shafai

引用次数: 2

Natural and artificial dielectrics: Similarities and differences 天然和人工电介质:异同

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552522

J. Shaker

引用次数: 1

A new generalized state-space dynamic neural network method for I/O buffer modeling in high-speed PCB design 高速PCB设计中I/O缓冲区建模的广义状态空间动态神经网络方法

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552487

Yi Cao, S. Bokhari

{"title":"A new generalized state-space dynamic neural network method for I/O buffer modeling in high-speed PCB design","authors":"Yi Cao, S. Bokhari","doi":"10.1109/ANTEM.2010.5552487","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552487","url":null,"abstract":"In this paper, we present a new method for modeling the nonlinear transient behavior of I/O buffers in high-speed PCB design. The proposed method expands the existing StateSpace Dynamic Neural Network (SSDNN) into a more generalized and efficient technique for modeling nonlinear behavior of I/O buffers. A Multi-Layer Perceptron (MLP) neural network with multiple hidden layers is combined with the SSDNN framework to further enhance the accuracy and flexibility of the trained neural network models. In addition, a new formulation embedding finite delay elements into the existing SSDNN is proposed to effectively address the modeling of such I/O devices where a long propagation delay is present. The proposed method is applied to the behavioral modeling of a commercial SSTL output buffer. It is demonstrated that the proposed method provides better accuracy compared to the existing SSDNN for modeling I/O buffers with strong nonlinearity and a long propagation delay, while outperforming the detailed SPICE model in terms of simulation efficiency.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114973770","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

Low cost microstrip patch antenna array using planar waveguide technology for emerging millimeter-wave wireless communication 采用平面波导技术的低成本微带贴片天线阵列用于新兴的毫米波无线通信

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552477

W. A. Wahab, S. Safavi-Naeini, D. Busuioc

{"title":"Low cost microstrip patch antenna array using planar waveguide technology for emerging millimeter-wave wireless communication","authors":"W. A. Wahab, S. Safavi-Naeini, D. Busuioc","doi":"10.1109/ANTEM.2010.5552477","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552477","url":null,"abstract":"With rapidly increasing demand for bandwidth, and the recent advances in nano-metric Si-based integrated circuit technologies, millimeter-wave (mmW) systems are finding numerous commercial applications, which, unlike military and scientific usages, are extremely cost sensitive. A wide range of applications at mmW frequencies can be found in such area as wireless communications network (60 GHz) [1], automotive radar systems (79 GHz)[2], and passive mmW imaging (91GHz)[3]. Microstrip patch antenna (MPA) arrays are known to have advantages of low profile and ease of manufacturing. However, the efficiency of MPAs with large aperture is degraded due to feeding loss[4]. Recently, a low cost, high Q- factor planar feeding scheme using substrate integrated waveguide (SIW) has been reported [5]. The proposed design has promising characteristics including a high radiation efficiency. In this paper, a novel high radiation efficiency SIW-fed MPA array (SIW-MPA) is presented. Single element, series fed linear array 1×8, MPAs are designed at mmW- frequency range. The numerical results (simulations using HFSS) for the designed antennas are presented to characterize their performances.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585223","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

Wideband circularly polarized antenna elements for GPS/GNSS applications developed at DRDC Ottawa 渥太华DRDC开发的用于GPS/GNSS应用的宽带圆极化天线元件

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552561

M. Clénet, M. Caillet, Y. Antar

引用次数: 6