Academic literature on the topic 'Antennas (Electronics); Electric waves Diffraction'
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Journal articles on the topic "Antennas (Electronics); Electric waves Diffraction"
Lerer, Alexander M., Elena V. Golovacheva, Anatoly B. Kleshchenkov, Gennady A. Shurov, Pavel V. Makhno, and Victoria V. Makhno. "Electrodynamic analysis of nanoantennas at millimeter and optical wavelength ranges." International Journal of Microwave and Wireless Technologies 5, no. 4 (April 3, 2013): 537–50. http://dx.doi.org/10.1017/s1759078713000196.
Full textChou, Hsi-Tseng. "Truncation Diffraction Phenomena of Floquet Waves Radiated From Semi-Infinite Phased Array Antenna in a General Focus Problem." IEEE Transactions on Antennas and Propagation 62, no. 7 (July 2014): 3592–602. http://dx.doi.org/10.1109/tap.2014.2318331.
Full textWelti, R. "Interaction between sources and the superposition principle in interference phenomena." Journal of Optics 23, no. 12 (November 3, 2021): 125603. http://dx.doi.org/10.1088/2040-8986/ac2fd1.
Full textKaliberda, M. E., L. M. Lytvynenko, and S. A. Pogarsky. "OPERATOR METHOD IN THE PROBLEM OF THE H-POLARIZED WAVE DIFFRACTION BY TWO SEMI-INFINITE GRATINGS PLACED IN THE SAME PLANE." Radio physics and radio astronomy 26, no. 3 (September 14, 2021): 239–49. http://dx.doi.org/10.15407/rpra26.03.239.
Full textTIAN, YE, FAN YANG, CHAOYU GUO, and YING JIANG. "RECENT ADVANCES IN ULTRAFAST TIME-RESOLVED SCANNING TUNNELING MICROSCOPY." Surface Review and Letters 25, Supp01 (December 2018): 1841003. http://dx.doi.org/10.1142/s0218625x18410032.
Full textZhang, Cheng, Jean-Paul Hugonin, Anne-Lise Coutrot, Christophe Sauvan, François Marquier, and Jean-Jacques Greffet. "Antenna surface plasmon emission by inelastic tunneling." Nature Communications 10, no. 1 (October 30, 2019). http://dx.doi.org/10.1038/s41467-019-12866-3.
Full textDissertations / Theses on the topic "Antennas (Electronics); Electric waves Diffraction"
Tait, Jan. "An electro-optic measurement system for electric fields near RF and microwave radiators and scatterers." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51596.
Full textENGLISH ABSTRACT: An electro-optic sensor system was developed which uses the modulated scatterer technique [1] to measure the fine structure-amplitude and phase-of electric fields with the minimum of perturbation. The theory for the technique is discussed in detail, with the Lorentz Reciprocity theorem as foundation. The system is also treated as a general two port and solved in terms of the impedances present. This comprises self impedances and mutual impedances. The signals scattered by the dipole scatterer are modeled as amplitude modulated signals and a detailed detection scheme is presented. The detection of the signals is done by a digital correlation process. This is quite similar to synchronous detection. A detailed sensitivity analysis is presented that was used to determine the quality of the system. This analysis is backed by a practical sensitivity measurement. A few antennas and scatterers are measured in the X-band using the system, and results are compared with theory. These systems include a pyramidal horn, an E-plane sectoral horn and a simple waveguide. Half plane diffraction by a metal sheet is also presented. The practical implementation of the theory is emphasized.
AFRIKAANSE OPSOMMING: 'n Elektro-optiese meetsisteem is ontwikkel wat die gemoduleerde strooier tegniek [11 gebruik om die fyn struktuur-amplitude en fase-van elektriese velde te meet. Hierdie tegniek versteur die velde minimaal. 'n Volledige ondersoek word gedoen na die teorie van die stelsel. Die basis van die metode Ie in die Lorentz Resiprook teorie. Alhoewcl daar gekonsentreer word op hierdie teorie, is die stelsel ook beskou as 'n tweepoort. Die wedersydse en ei impedansies van die verskillende komponente word gebruik om die velde op te los. Die gestrooide seine, as gevolg van die dipool strooier, word gemodelleer met b hulp van amplitude modulasie. Die deteksie van hierdie seine word deeglik bespreek. In plaas van 'n analoogstelsel, word 'n digitale korrellasie proses gebruik om die velde te meet. Di sensitiwiteit van die stelsel word geanaliseer. Verder word metings met di stelsel gen em om die teoretiese analise te staaf. 'n Paar X-band sisteme word gebruik om metings te neem. Hicrdi metings word ook vergelyk met teor ti se resultate. Stelsels wat gemeet is sluit die volgencle in: 'n piramidale horing antenna, 'n E-vlak sektorale horing antenna, 'n X-band golfgeleier en die diffraksi op die rand van 'n plaat. Die praktiese implemcntering van die teorie word beklemtoon.
Lertwiriyaprapa, Titipong. "An approximate UTD development for the radiation by antennas near or on thin material coated metallic wedges." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196281470.
Full textNarrainen, Jessen. "Perforance evaluation of vehicle radiofrequency communication systems : contribution to the modelling approach." Thesis, Rennes, INSA, 2017. http://www.theses.fr/2017ISAR0007/document.
Full textThe general framework of this Ph.D. thesis deals with Vehicle to Vehicle (V2V) communications. This communication is principally dedicated to reinforce security through exchange of information between vehicles in case of unexpected events. The development of V2V solutions requires the understanding and merging of a number of techniques from several communication technology areas. Indeed, the performance of these systems are related to three main blocks: the implementation of the modems, the antenna configuration and the fast varying electromagnetic environment surrounding the transmitter and the receiver. The purpose of this PhD thesis is precisely to elaborate a design strategy to investigate all the different blocks constituting the communication chain. The ultimate goal is to optimize antenna selection and location on board the vehicle. In the first place, we proposed a geometry-based stochastic channel modelling approach to develop virtual dynamic scenarios. It was shown that the most common propagation environments such as rural, highway or urban-like propagation channels are reached through adjustment or numbers and location of simple metallic plates. Using this method, we are able to emulate the characteristics, such as the delay spread, angles of arrival distribution and the Doppler spectrum, of these typical driving scenarios. Moreover, we dealt with antenna integration problems in the second part of this work. A study on the simplification of numerical models of vehicles was carried out. Furthermore in this section, we investigated the limit of validity of representing the integrated antenna on board vehicle solely by its radiation pattern. We deduced from this study that the interactions with the elements present in the near-field is no longer valid. Thus, a strategy to alleviate the degree of error was found upon consideration of the near-field scatter in the a-priori simulation of the antenna integrated on the vehicle. In the third part of this thesis, we evaluated the performance of different antenna configurations in terms of packet error rate after the embodiment of the PHY layer of the LEEE 802.11p standard. Simulation results, for each antenna configurations, was given for several combinations of PHY layer parameters such as data rate and packet length. The last part of this manuscript is dedicated to the presentation of a measurement campaign that was carried out in a rural driving environment. Results obtained from these functional tests were confronted with simulation results to demonstrate the strength of the latter. We found that the expected trends in communication performance in terms of PER are globally predictable from our model though we obtained surprising results in some cases, needing further investigation
Books on the topic "Antennas (Electronics); Electric waves Diffraction"
Traveling wave antennas. Los Altos, Calif: Peninsula Pub., 1990.
Find full textBalaberda, Randolph Francis. Radiation pattern measurements of a tranline antenna on a scale model of the CH-135 Bell Helicopter. Ottawa: National Research Council Canada, Division of Electrical Engineering, 1986.
Find full textA concise course in electromagnetism for electrical engineering. Singapore: World Scientific, 1994.
Find full text1958-, Benson T. M., ed. Fields, waves, and transmission lines. London: Chapman & Hall, 1991.
Find full textAntennas and Wave Propagation. Oxford University Press, USA, 2007.
Find full textBrown, Robert Grover. Lines, Waves, and Antennas: The Transmission of Electric Energy. Krieger Publishing Company, 1992.
Find full textGrover, Brown Robert, ed. Lines, waves, and antennas: The transmission of electric energy. Malabar, Fla: Krieger Pub. Co., 1992.
Find full textHwang, Ruey-Bing. Periodic Structures: Mode-Matching Approach and Applications in Electromagnetic Engineering. Wiley & Sons, Incorporated, John, 2012.
Find full textHwang, Ruey-Bing. Periodic Structures: Mode-Matching Approach and Applications in Electromagnetic Engineering. Wiley & Sons, Incorporated, John, 2012.
Find full textHwang, Ruey-Bing. Periodic Structures: Mode-Matching Approach and Applications in Electromagnetic Engineering. Wiley & Sons, Incorporated, John, 2012.
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