Littérature scientifique sur le sujet « Near-Field Radiation Pattern »
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Articles de revues sur le sujet "Near-Field Radiation Pattern"
Shankpal, Preetham, Varun Arur, Govind Kadambi et James Shuttleworth. « A Generalized Approach for Computation of Near Field Radiation Pattern of an Antenna ». International Journal of Antennas and Propagation 2014 (2014) : 1–18. http://dx.doi.org/10.1155/2014/958148.
Texte intégralAho-Mantila, L., F. Subba, M. Bernert, D. P. Coster, S. Wiesen, M. Wischmeier, X. Bonnin et al. « Predictions of radiation pattern and in–out asymmetries in the DEMO scrape-off layer using fluid neutrals ». Nuclear Fusion 62, no 5 (2 mars 2022) : 056015. http://dx.doi.org/10.1088/1741-4326/ac4d62.
Texte intégralIsernia, T., G. Leone et R. Pierri. « Radiation pattern evaluation from near-field intensities on planes ». IEEE Transactions on Antennas and Propagation 44, no 5 (mai 1996) : 701. http://dx.doi.org/10.1109/8.496257.
Texte intégralPeña-Ruiz, S., J. Sosa-Pedroza, F. Martinez-Zuñiga, A. Rodríguez-Sánchez, E. Garduño-Nolasco et And M. Enciso-Aguilar. « Near field analysis and field transformation applied to a parabolic profile at 5GHz ». Revista Mexicana de Física 65, no 3 (7 mai 2019) : 268. http://dx.doi.org/10.31349/revmexfis.65.268.
Texte intégralCalazans, T., H. D. Griffiths, A. L. Cullen, D. E. N. Davies et R. Benjamin. « Antenna radiation pattern measurement using a near-field wire scattering technique ». IEE Proceedings - Microwaves, Antennas and Propagation 145, no 3 (1998) : 263. http://dx.doi.org/10.1049/ip-map:19981775.
Texte intégralStangl, N. « MF AM antenna radiation pattern verification method by near field measurements ». IEEE Transactions on Broadcasting 47, no 3 (2001) : 285–91. http://dx.doi.org/10.1109/11.969377.
Texte intégralHerschmann, R., et O. Büchel. « Radiation characteristics of a coaxial waveguide with eccentric inner conductor for application in hyperthermia and microwave reflex therapy ». Advances in Radio Science 5 (13 juin 2007) : 189–95. http://dx.doi.org/10.5194/ars-5-189-2007.
Texte intégralShum, S. M., et K. M. Luk. « An efficient FDTD near-to-far-field transformation for radiation pattern calculation ». Microwave and Optical Technology Letters 20, no 2 (20 janvier 1999) : 129–31. http://dx.doi.org/10.1002/(sici)1098-2760(19990120)20:2<129 ::aid-mop14>3.0.co;2-c.
Texte intégralHuang, Quan, Yuxin Wu, Yan Gao, Wenxiao Fang, Zhiqiang Yi, Yun Huang, Guoguang Lu et Kaiwei Wang. « An EMI radiation grouping approach based on spectral cluster in near filed scanning for assessment ». IOP Conference Series : Materials Science and Engineering 1207, no 1 (1 novembre 2021) : 012018. http://dx.doi.org/10.1088/1757-899x/1207/1/012018.
Texte intégralMaisto, Maria Antonia, Giovanni Leone, Adriana Brancaccio et Raffaele Solimene. « Efficient Planar Near-Field Measurements for Radiation Pattern Evaluation by a Warping Strategy ». IEEE Access 9 (2021) : 62255–65. http://dx.doi.org/10.1109/access.2021.3074786.
Texte intégralThèses sur le sujet "Near-Field Radiation Pattern"
Scott, H. M. « Near field modification techniques for pattern shaping in antenna elements and arrays ». Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269176.
Texte intégralHerzog, Scott M. « Radiation pattern calculation for missile radomes in the near field of an antenna ». Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA320828.
Texte intégralThesis advisor(s): David C. Jenn, Robert E. Ball. "September 1996." Includes bibliographical references (p. 69). Also available online.
GIORDANENGO, GIORGIO. « Hybrid Measurement/Simulation Approaches for Antenna Testing ». Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2643123.
Texte intégralDiakite, Cheick. « Identification d’un modèle de mesure au sol du diagramme de rayonnement des antennes installées sur aéronefs ». Thesis, Université Côte d'Azur (ComUE), 2018. http://www.theses.fr/2018AZUR4007.
Texte intégralAircraft antennas radiation pattern must be measured before radiofrequency systems deployment. When an antenna is on the aircraft, radiating structure is not only antenna element but it’s the set antenna and aircraft. Radiation pattern have to be determined at great distance from the radiating structure. This distance is located in area called far field area depending on the frequency of operation and the maximal size of the aircraft. For example, to measure an antenna on an aircraft of 12 m of long at 88 MHz; the far field area is at 85m.To get this distance, flight measurement is performed. During flight test, radiation pattern is determined by a ground station which is at 80 km of the aircraft. This method is very expensive and takes much time and causes serious delays on aircraft delivery. For these reasons Airbus Helicopters explores new innovative solution, like as radiation pattern measurement on the ground. The last one disturbs the radiation pattern. The proposed method allows to perform measurement in compact volume and cancel out the ground influence. Proposed solution is based on cylindrical near field measurement, and cylindrical modes decomposition. Near field data are scanned on cylinder surface, then an algorithm developed on MATLAB environment do near field to far field transformation. Cylindrical modes decomposition and modal filtering rid of ground reflections. Proposed solution has been validated numerically through comparison with electromagnetic simulator software results. Antenna measurement range in the laboratory has served to validate experimentally the proposed solution on a prototype in scale size
Kojima, Seishiro. « Novel Beamforming and Antenna Techniques for Microwave Power Transmission in Radiating Near Field ». Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263667.
Texte intégralChen, Yao-Jen, et 陳躍仁. « Near-field radiation pattern characterization of ultra-wideband chaotic waveform ». Thesis, 2005. http://ndltd.ncl.edu.tw/handle/85649229267483215200.
Texte intégral國立陽明大學
生醫光電工程研究所
93
According to statistical data, arising rate of breast cancer has grown three times than past twenty years, and is still increasing. Early detection and timely medical therapy are the key factors to improve survival rate. In this thesis, I successfully construct an optical-injection semiconductor laser system, several dynamical states can be obtained when three experimental accessible parameters are adjusted. Chaotic state is the dynamic state mainly concerned in the experiment. The characterization of the chaotic oscillation state is ultra-wideband (7GHz) and, therefore, it provides better spatial resolution. Then optical signal is transduced to electrical signal utilizing high-speed photodetector, the near-field antenna pattern is characterized through the microwave system and power spectrum. We hope that this technique can be used to image breast cancer in the future. Thanks to auto-correlation analysis of time-series of chaotic oscillation, the far-field axial resolution is 1cm. We analyze the power spectrum and use the 3dB attenuation rate to be the resolution. When Z=1mm, the near-field axial resolution is 0.5mm, when Z=5mm, the axial resolution is 1mm. When Z=1mm and Z=5mm, the near-field lateral resolution is 2mm, when Z=10mm, the lateral resolution is 5~6mm.
Li, Wen-Hsien, et 李文賢. « Near-field radiation pattern characterization of sub-nanosecond chaotic pulses ». Thesis, 2005. http://ndltd.ncl.edu.tw/handle/28604675949763724062.
Texte intégral國立陽明大學
生醫光電工程研究所
93
Field pattern of a series of chaotic pulses emitted through a near-field antenna is studied in this thesis to investigate the possibility of 3-D microwave imaging. The chaotic pulses are generated from a semiconductor laser subject to positive optoelectronic feedback. It is observed that the optoelectronic feedback mechanism can generate sub-nanosecond microwave pulses when the optical signal is converted into microwave signal through a high-speed photodiode. The width of the pulses is measured as short as 0.3∼0.5 nanoseconds. It is revealed that the non-periodic pulses can provide 1.8 cm axial resolution when correlation scheme at far-field range is used. While axial resolution can be obtained through the correlation measurement, lateral resolution cannot. A concept of a near-field imaging is therefore investigated in this thesis. This thesis focuses on characterizing the near-field pattern of an antenna with 0.65 mm aperture. The result has shown that different frequency components varied with distance differently. This characteristic provides lateral resolution varied from 1 mm to 8 mm, which depend on the distance from the antenna tip, and the axial resolution ranging from 2 mm to 8 mm. This preliminary study has shown the possibility of utilizing a near-field antenna to obtain 3-dimensional resolution. Since it was reported that cancer tumors in breast have high refractive index compared to normal surrounding tissues in the microwave range, this research will later be used to investigate the feasibility of microwave imaging for the detection of early-stage beast cancer.
FUSCALDO, WALTER. « Advanced radiating systems based on leaky wave and nondiffracting waves ». Doctoral thesis, 2017. http://hdl.handle.net/11573/943920.
Texte intégralLivres sur le sujet "Near-Field Radiation Pattern"
Radiation Pattern Calculation for Missile Radomes in the Near Field of an Antenna. Storming Media, 1996.
Trouver le texte intégralChapitres de livres sur le sujet "Near-Field Radiation Pattern"
Weik, Martin H. « near-field radiation pattern ». Dans Computer Science and Communications Dictionary, 1075. Boston, MA : Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_12125.
Texte intégralActes de conférences sur le sujet "Near-Field Radiation Pattern"
Chou, Min, Kai-Wen Liang, Meng-Hua Tu et Sung-Mao Wu. « Transmission line signal radiation pattern by near-field measurement ». Dans 2017 International Conference on Electronics Packaging (ICEP). IEEE, 2017. http://dx.doi.org/10.23919/icep.2017.7939366.
Texte intégralBasikolo, Thomas, Hirovuki Arai, Satoshi Hori et Shinya Iwanaga. « Reconstruction of Far Field Radiation Pattern from Hemispherical Near Field Measurements ». Dans 2018 IEEE International Workshop on Electromagnetics : Applications and Student Innovation Competition (iWEM). IEEE, 2018. http://dx.doi.org/10.1109/iwem.2018.8536677.
Texte intégralSpeciale, Ross A. « Computer-simulation of near-field phased-array radiation-pattern scanning ». Dans 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4395822.
Texte intégralWilliamson, Thomas G., Paul Simmons, Jacob Houck, Daniel Leatherwood, Jason Whelan, Walter Disharoon et Drew Kerr. « Mathematical Techniques for Near Field Radiation Pattern Characterization of Digital Arrays ». Dans 2022 IEEE Aerospace Conference (AERO). IEEE, 2022. http://dx.doi.org/10.1109/aero53065.2022.9843281.
Texte intégralSukpreecha, Kitiphon, Kittisak Phaebua, Titipong Lertwiriyaprapa, Kittima Lertsakwimarn et Danai Torrungrueng. « Radiation Pattern Measurements of Small Antennas Using Spherical Near-field Measurement Technique ». Dans 2022 Research, Invention, and Innovation Congress : Innovative Electricals and Electronics (RI2C). IEEE, 2022. http://dx.doi.org/10.1109/ri2c56397.2022.9910277.
Texte intégralHirayama, H., et Y. Kami. « Estimation of near-E field and far-field radiation pattern with only near-H field measurement by using the Yee scheme ». Dans 2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03. IEEE, 2003. http://dx.doi.org/10.1109/icsmc2.2003.1428199.
Texte intégralYang, M. R., T. Y. Liu et B. Zhao. « A method for improving near-field BP imaging that Uses radiation pattern compensation ». Dans 2022 3rd China International SAR Symposium (CISS). IEEE, 2022. http://dx.doi.org/10.1109/ciss57580.2022.9971293.
Texte intégralShu, Yufei, Xingchang Wei et Yanbin Yang. « Patch Antenna Radiation Pattern Evaluation Based on Phaseless and Single-Plane Near-Field Scanning ». Dans 2019 IEEE International Conference on Computational Electromagnetics (ICCEM). IEEE, 2019. http://dx.doi.org/10.1109/compem.2019.8778952.
Texte intégralPivnenko, S., J. M. Nielsen et O. Breinbjerg. « Very high-accuracy calibration of radiation pattern and gain of a near-field probe ». Dans 2014 8th European Conference on Antennas and Propagation (EuCAP). IEEE, 2014. http://dx.doi.org/10.1109/eucap.2014.6902114.
Texte intégralXu, Rui, Hanjie Chen et Zhengyuan Xu. « The Near-field Radiation Pattern of an OLED Panel and Its Application in Detection ». Dans 2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP). IEEE, 2018. http://dx.doi.org/10.1109/csndsp.2018.8471896.
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