2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference最新文献_第4页

Use of time domain gating in spherical near-field measurements 时域门控在球面近场测量中的应用

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552375

J. Fordham

{"title":"Use of time domain gating in spherical near-field measurements","authors":"J. Fordham","doi":"10.1109/ANTEM.2010.5552375","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552375","url":null,"abstract":"Time domain gating has been widely used in antenna measurements for many years. The technique has proven useful in gating out extraneous signals from the range that can be uniquely separated from the primary desired signal. The well known process involves collecting data in the frequency domain and then transforming the data to the time domain for processing. In far-field antenna measurements the technique is limited in its applicability by factors such as antenna bandwidth and pattern shape vs. frequency, and internal time delays within the device under test. Spherical near-field presents additional challenges to the effective use of time domain gating. These challenges of performing time domain gating in spherical near-field measurements are presented along with measured results from a small spherical near-field range. These results show the significant reduction in stray signals and the resulting increase in accuracy that can be achieved via time domain gating. Finally, the paper concludes with measurements made on a large spherical near-field arch over a ground plane system. Additional challenges of such a system will be highlighted.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"19 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":"126390320","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

Analysis, design and development of novel, low profile 2.487 GHz microstrip antenna 新型低轮廓2.487 GHz微带天线的分析、设计与开发

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552506

R. Kanth, Waqar Ahmad, Y. Amin, P. Liljeberg, Lirong Zheng, H. Tenhunen

引用次数: 7

Frequency agility investigations on compact omnidirectional antennas using variable inductors 可变电感紧凑全向天线的频率捷性研究

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552563

S. Sufyar, C. Delaveaud, R. Staraj

引用次数: 1

Novel design strategy for passive UHF RFID tags 无源超高频RFID标签设计新策略

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552539

A. Ghiotto, T. Vuong, Ke Wu

引用次数: 7

Analysis and design of UWB elliptical slot antennas 超宽带椭圆缝隙天线的分析与设计

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552484

O. Haraz, Ayman Elboushi, A. Sebak

引用次数: 2

Iterative methods for linear systems based on minimizing the distance to the solution point 基于求解点距离最小化的线性系统迭代方法

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552508

I. Ciric

引用次数: 0

A domain decomposition moment method approach for analysis of complex reflectorarrays 复杂反射阵列分析的域分解矩法

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552534

I. González, J. Gomez, A. Tayebi, C. Delgado, F. Cátedra

引用次数: 1

Capacitively coupled cross resonator UWB BPF with steep slopes 具有陡坡的电容耦合超宽带BPF交叉谐振器

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552493

Thai Hoa Duong, I. Kim

{"title":"Capacitively coupled cross resonator UWB BPF with steep slopes","authors":"Thai Hoa Duong, I. Kim","doi":"10.1109/ANTEM.2010.5552493","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552493","url":null,"abstract":"This paper introduces a new ultra wideband (UWB) bandpass filter (BPF) with very sharp roll-off characteristics in stripline structure for the U.S. band (3.1–10.6 GHz). The UWB characteristic is basically obtained from capacitive coupling between a main line and a λ/2 length cross resonator. At the center of the resonator, two stubs are loaded, one is λ/8 short-circuited and the other λ/8 open-circuited. The two stubs provide two attenuation poles at lower and upper cutoff frequencies. For input and output lines, two λ/4 identical capacitively coupled lines have been installed to suppress the unwanted signals in the lower and upper stopbands. The filter has been designed with two transmission zeros at 2.4 and 11.1 GHz to provide 81 dB/GHz and 86 dB/GHz slopes in the lower and upper transition bands, respectively, and realized with low temperature core-fired ceramic (LTCC) green tape which has the dielectric constant of 7.8. Measurement results agree well with HFSS simulation results. Insertion loss less than 0.6 dB and return loss better than 14 dB in the pass band have been measured. The group delay at the center frequency is 0.26 ns and the group delay variation within pass band is less than 0.5 ns. The size of the filter is 6×18×0.6 mm3.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"7 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":"128346209","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 study of adaptive meshing in FEM-CSI for microwave tomography 微波层析FEM-CSI自适应网格划分研究

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552529

A. Zakaria, J. Lovetri

引用次数: 5

Analytical cross-polarization nulling technique 解析交叉极化消零技术

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552412

A. Daya, G. Hampton

引用次数: 0