Relevant bibliographies by topics / Dielectic rod

Academic literature on the topic 'Dielectic rod'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Dielectic rod"

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Eremenko, Z. E. "The Electromagnetic Wave Propagation on the Interface between Low and High Loss Dielectrics." Advances in Condensed Matter Physics 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/683521.

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The wave propagation on closed curved interface (a rod or ball) between low and high loss dielectrics was studied and compared with well-known wave propagation problem on flat plane interface between low loss and high loss media. We have studied the propagation of a cylindrical wave along a round dielectric rod immersed into a high loss medium and a spherical wave forming by the oscillations in a dielectric ball immersed into a high loss medium as well. These waves have surface character similar to the wave known as the Zenneck surface wave. The distinctive characteristic of such cylindrical or spherical waves: the more loss in high loss medium the greater its surface character. We showed that the wave attenuation is essentially small at enough big dissipative loss in outer medium of dielectric structures.
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Nasir, Muhammad, Yulong Xia, Abu Bakar Sharif, Guangjun Guo, Qi Zhu, Masood Ur Rehman, and Qammer Hussain Abbasi. "A High Gain Embedded Helix and Dielectric Rod Antenna with Low Side Lobe Levels for IoT Applications." Sensors 22, no. 20 (October 13, 2022): 7760. http://dx.doi.org/10.3390/s22207760.

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In this paper, a novel embedded helix dielectric rod antenna is presented for high gain radiation with circular polarization (CP) and low side lobe levels for IoT Applications. Different from the conventional dielectric rod antennas, this proposed antenna is an integrated structure that combines the advantages of the helix and dielectric rod antennas. The presented antenna mainly consists of three parts: a tapered helix as primary feeding for CP, a dielectric rod with printed loops embedded for higher directivity, and a dielectric rod end for improving the gain further. After studying and analyzing the working principles of each part, an optimum design operating at 8–9.7 GHz is carried out as an example. A prototype is also fabricated and tested. The measured results show that the prototype can provide 18.41 dB maximum gain within the length of 7.7 λ. The side lobe level is below −20 dB, and the axial ratio is better than 1.14 dB in the whole frequency band. Compared with the traditional helix antenna and dielectric rod antenna with the same electric length, the presented antenna has a higher gain with a lower side lobe level and with good polarization purity.
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Chung, Jae-Young, and Chi-Chih Chen. "Two-Layer Dielectric Rod Antenna." IEEE Transactions on Antennas and Propagation 56, no. 6 (June 2008): 1541–47. http://dx.doi.org/10.1109/tap.2008.923343.

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Hanham, Stephen M., Trevor S. Bird, Andrew D. Hellicar, and Robert A. Minasian. "Evolved-Profile Dielectric Rod Antennas." IEEE Transactions on Antennas and Propagation 59, no. 4 (April 2011): 1113–22. http://dx.doi.org/10.1109/tap.2011.2109689.

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Ong, Swee Huat, Ahmed A. Kishk, and Allen W. Glisson. "Rod-ring dielectric resonator antenna." International Journal of RF and Microwave Computer-Aided Engineering 14, no. 5 (2004): 441–46. http://dx.doi.org/10.1002/mmce.20031.

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Kelebekler, Ersoy. "An analysis of leaky hybrid modes depending on structural parameters in a circular dielectric rod." Frequenz 75, no. 9-10 (April 19, 2021): 377–87. http://dx.doi.org/10.1515/freq-2020-0189.

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Abstract Open dielectric waveguides are structures used to guide electromagnetic energy in integrated circuits above the cutoff or as leaky wave antennas propagating the energy transversely out of the waveguide in a narrow region below the cutoff. In this study, the related operating regions for the hybrid EH modes of a cylindrical dielectric rod were obtained analytically. Analyses of the leaky wave characteristics of the hybrid EH modes for various radii of the rod and various dielectric constant values were performed. The guided modes existing above the cutoff with a pure real propagation constant, and the leaky wave modes existing below the cutoff with a complex propagation constant, were obtained from the coefficient matrix of the characteristic equations system of the structure using the bisection method and Davidenko’s method, respectively. Additionally, the guided modes of the structure were obtained and designated in the light of previous studies in the literature. The results show that the frequency spectrum of the antenna mode region increases as the value of the dielectric constant and the radius of the dielectric rod decrease. In addition, a circular dielectric with a smaller radius and dielectric constant had a larger frequency spectrum in the leaky wave antenna applications.
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Mayboroda, D. V., and S. O. Pogarsky. "AN ANTENNA BASED ON A HYBRID METAL–DIELECTRIC STRUCTURE." Radio physics and radio astronomy 26, no. 3 (September 14, 2021): 270–77. http://dx.doi.org/10.15407/rpra26.03.270.

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Purpose: Nowadays, in the millimeter frequency range, the dielectric waveguides of various modifications have certain advantages over the standard metal waveguides, primarily due to the possibility of creating functional units based on them. This is due to the relative simplicity and low cost of manufacturing the dielectric waveguides and functional units using them, the high degree of their integration with active elements, the use in their manufacture of different dielectrics and polymers with a wide range of material constants and a variety of mechanical properties (in particular, some materials have a significant flexibility). After making a series of physical experiments we have found the possibility of implementing the frequency selection and radiation into free space of electromagnetic waves by a hybrid metal-dielectric structure. Design/methodology/approach: The studied electrodynamic structure belongs to the class of hybrid metal-dielectric structures. It includes a modified inverted dielectric waveguide with a periodic sequence on the dielectric plate of fifteen dielectric rods with metallized coating on one of the faces placed outwards. The structure efficiency was estimated by the voltage standing-wave ratio (VSWR) values and power attenuation in the duct. The measurements were made with the reflectometer method. To estimate the degree of electromagnetic field concentration near the rod inhomogeneities in the near zone, the mobile probe method was used. The field structures were visualized with the method of isolines. Findings: The results of a series of experimental investigations showed the possibility of matching the structure with the external waveguides in the frequency range of 26.5-32.5 GHz with the voltage standing-wave ratio (VSWR) less than 1.8. The frequency dependence of attenuation is oscillatory with clearly expressed frequency ranges with small and large attenuation values. Moreover, the dependence is almost periodic, which is typical of periodic structures. The frequency response slope in the transition zones can be quite high and reach values of 41.26 dB/GHz. The degree of concentration of the electric field near the waveguide dielectric rod and the degree of excitation of the dielectric inhomogeneities was found by directly measured electric field strength in the near zone. Measurements of energy characteristics made under the short-circuit conditions for the main guide and in the mode of matched load of the main guide showed both the ability to control the polarization characteristics and the ability to change the appearance of the pattern and its orientation in space. Conclusions: It has been experimentally proven that a hybrid metal-dielectric structure, being a modified inverted dielectric waveguide with a periodic sequence on the dielectric plate of fifteen dielectric rods with metalized coating on one of the faces placed outwards, can be effectively integrated into a standard transmission line. It is found that this structure can be matched with the external circuits in a fairly wide frequency range. It is also found that in different frequency ranges this hybrid metal-dielectric structure shows the possibility of both efficient frequency selection and radiation in free space. Antenna measurements have shown the beam pattern shape controllability. Key words: inverted dielectric waveguide, periodic sequence, voltage standing-wave ratio (VSWR), attenuation, reflectometer method, mobile probe method, directivity pattern
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Zhu, Min, Shengyu Hu, Fangfang Wu, Heng Ma, Shenyi Xie, and Chaohai Zhang. "CO2 dissociation in a packed bed DBD reactor: effect of streamer discharge." Journal of Physics D: Applied Physics 55, no. 22 (March 7, 2022): 225207. http://dx.doi.org/10.1088/1361-6463/ac55c1.

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Abstract Non-thermal plasma catalysis, as a special heterogeneous catalytic reaction, needs to consider both gas discharge and catalytic reaction. Packed bed dielectric barrier discharge (PB-DBD) is widely used in non-thermal plasma catalysis, but the exact control principle of gas discharge, especially streamer discharge, is not clear. In this study, therefore, the orderly arranged dielectric rods were packed in the discharge gap of PB-DBD, and the streamer discharge behaviors were controlled by adjusting their diameter(s), quantity(ies), location(s) and dielectric constant(s). Al2O3 and ZrO2 dielectric rods with dielectric constants of about 9 and 25 were used as packing material. Pure CO2 was used as reaction gas and discharge gas. Discharge images showed that stable and controllable streamer discharges can be formed between the dielectric rod and ground electrode. The intensity, width and length of the streamer discharge can be significantly changed by optimizing the dielectric constant, diameter, packing number and position of the dielectric rod, thereby affecting the CO2 conversion efficiency. Increasing dielectric constant and the distance between the dielectric rod and ground electrode can increase the intensity of streamer discharge, thus promoting the CO2 conversion efficiency. Compared with an empty reactor, after packing 24 ZrO2 dielectric rods with a diameter of 1 mm, the CO2 conversion and energy efficiency increased from 9.58% to 20.1% and from 1.67% to 2.89%, respectively. In short, this research has important implications for plasma catalysis. This study not only reveals the synergistic characteristics between streamer discharge and CO2 dissociation, but also provides an important idea for structural optimization of PB-DBD catalyst.
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Pavlov, I. D., Ya V. Karaev, and M. A. Kot. "Ultra Wide Band Dielectric Rod Antenna." Journal of the Russian Universities. Radioelectronics 23, no. 2 (April 28, 2020): 38–45. http://dx.doi.org/10.32603/1993-8985-2020-23-2-38-45.

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Introduction. Often, the space allocated for placement of an antenna has an inconvenient shape for this. The inconvenience is that its overall dimensions, namely the length and height, relate to each other approximately as 5:1. The task of placing the antenna in the space, in the absence of ready-made solutions, involves the development of an antenna with a similar ratio (5:1) of overall dimensions and with the possibility of convenient mounting on a flat conductive surface. Also, in the 9:1 frequency band, the antenna should have the following radio technical characteristics: voltage standing wave coefficient (VSWR) of not more than 3, gain of at least 1 dBi, radiation patterns should be axisymmetric with side lobe level not exceeding 25 %.Aim. Development and study of the characteristics of an ultra-wideband dielectric rod antenna.Materials and methods. Two structurally different versions of an ultra-wideband dielectric rod antenna were proposed. The main radio technical characteristics of both options were obtained through electrodynamic modeling in Ansoft HFSS.Results. As a result of the simulation, the following radio characteristics were obtained: – for the first option, the VSWR does not exceed 3.25 in the required frequency range, the gain varies from 6 to 12 dBi, the axisymmetric radiation patterns with the level of the side lobes not exceeding 30 %; – for the second option, the VSWR does not exceed 2.75 in the required frequency range, the gain varies from 5 to 11 dBi, the axisymmetric radiation patterns with the level of the side lobes not exceeding 20 %; In addition, the structural differences of the second option make it convenient to fix it on a flat conductive surface.Conclusion. Comparison of the obtained results with the requirements for the antenna under consideration shows that, unlike the first, the second option has an acceptable level of matching (VSWR 2.75) and of side radiation of radiation patterns (20 %). Based on this, it can be concluded that only the second option is suitable for the intended application.
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Guo, Min, Ji-Jun Yan, Shun-Shi Zhong, and Zhu Sun. "Wideband Circularly Polarized Dielectric Rod Antenna." International Journal of Antennas and Propagation 2012 (2012): 1–4. http://dx.doi.org/10.1155/2012/324197.

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A new dielectric rod antenna (DRA) is introduced to produce circular polarization (CP) over a wide frequency band without a complex feed network. Along with the simulated results, measured results of the antenna prototype are presented, showing a 3 dB axial ratio (AR) CP bandwidth of 17.7%. The radiation characteristics of the fabricated antenna are also demonstrated showing the measured gain of better than 6.2 dBi. Moreover, the measured impedance bandwidth (VSWR≤2) reaches 20.1%, from 8.75 GHz to 10.7 GHz, while the CP beamwidth (AR≤3 dB) at the central frequency is measured over 120°.
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Dissertations / Theses on the topic "Dielectic rod"

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Wells, Colin G. "Analysis of shielded rectangular dielectric rod waveguide using mode matching." University of Southern Queensland, Faculty of Engineering and Surveying, 2005. http://eprints.usq.edu.au/archive/00001524/.

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The limit of current technology for mobile base station filters is the multimode filter, in which each cavity supports two (or possibly three) independent degenerate resonances. Shielded dielectric resonators with a rectangular cross-section are useful in this application. In the design of these filters, manufacturers are using software packages employing finite element or finite difference time domain techniques. However, for sufficient accuracy these procedures require large numbers of points or elements and can be very time consuming. Over the last decade research using the mode matching technique has been used to solve this kind of difficulty for various types of filter design and waveguide problems. In this thesis a mode matching method and computer program is developed to calculate the propagation coefficients and field patterns of the modes in a shielded rectangular dielectric rod waveguide. Propagating, complex, evanescent and backward wave modes are included and the work shows the presence of a dominant mode, and other fundamental modes, not previously identified. The effect of the shield proximity on the propagation characteristics and mode spectrum is investigated, together with the limitations on the accuracy of the mode matching method. In addition, the fields within the shielded rectangular dielectric rod waveguide, are used to calculate the attenuation coefficient of the dominant and fundamental modes. The influence on the attenuation coefficient of the proximity of the shield to the rod is also evaluated for these modes and limitations on accuracy are discussed. The calculated numerical results for the propagation and attenuation coefficient values are verified by measurement. The propagation coefficients results are typically within 2% of those measured. Verification of the attenuation coefficient results is achieved by comparing calculated and measured Q at the resonant frequencies of a number of shielded rectangular dielectric rod resonators. The difference between calculated and measured Q values is on average less than 4%. In the absence of a full solution of the shielded rectangular dielectric rod resonator, these results provide useful design information for this structure. In addition, the work reported in this thesis provides a basis for a full electromagnetic solution of this type of resonator. This would encompass the cubic dielectric resonator in a cubical cavity.
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Wainwright, Gregory David. "Development of an Ultra-Wideband Circularly Polarized Multiple Layer Dielectric Rod Antenna Design." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437566560.

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Goodson, Craig Carl. "Simulation of Microwave Heating of Mullite Rods." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35768.

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Microwave processing has been studied as an alternate heating technique over conventional heating for industrial applications. Some advantages include quicker and more uniform heating. Also, microwave energy offers the advantage of localized heating and smaller-sized equipment. Many ceramics, however, are difficult to heat using microwave energy by reason of the strong temperature dependence of the dielectric loss. The ability of a ceramic to absorb microwave energy, a measure of its dielectric loss, increases with temperature which makes the material more susceptible to thermal runaway. The purpose of this research is to develop a model that accurately reproduces experimental data and can be used to explore new applicator designs for continuous processing of such ceramics. A two-dimensional numerical model, created for this purpose, assumes that the ceramic is a circular cylinder that moves either longitudinally through a microwave cavity of given dimensions. By adjusting the electromagnetic field so that the absorbed power matches the measured power, the model successfully imitates experimental results and avoids thermal runaway while achieving high temperatures.
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Cox, Gavin J. "Techniques for pattern control of a dielectric rod antenna suitable for use in mobile communications." Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/12693.

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This thesis describes the development of antennas suitable for mobile coinmunication systems based on a dielectric rod antenna fed from circular waveguide. Pattern control of the antenna is implemented using a combination of Frequency Selective Surface (FSS) elements and metallic endcaps placed on the antenna Both linear and circular polarised feeds have been made for these antennas to ensure they are suitable for a wide range of applications. The suitability of the dominant and next, higher order, waveguide mode were investigated and conclusions drawn as to their suitability for this type of antenna. The antennas were extensively modelled using a commercial TLM based solver and the results of these simulations were compared to the comprehensive set of antenna pattern measurements and S-parameter measurements obtained for the prototype antennas.
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Liu, Chia-Wei. "Development of Automatic Design Optimization Method for Ultrawide Bandwidth (UWB) Multi-Layer Dielectric Rod Antenna." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306512723.

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Li, Liang-shi. "Anisotropy in CdSe quantum rods." Berkeley, Calif. : Oak Ridge, Tenn. : Lawrence Berkeley National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/827094-DOIqqD/native/.

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Thesis (Ph.D.); Submitted to the University of California at Berkeley, Berkeley, CA (US); 1 Sep 2003.
Published through the Information Bridge: DOE Scientific and Technical Information. "LBNL--55023" Li, Liang-shi. USDOE Director. Office of Science. Office of Basic Energy Sciences (US) 09/01/2003. Report is also available in paper and microfiche from NTIS.
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Saarenketo, T. (Timo). "Electrical properties of road materials and subgrade soils and the use of Ground Penetrating Radar in traffic infrastructure surveys." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514282221.

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Abstract This PhD thesis is composed of a synopsis and five published papers that are focused on both the research results of studies on electrical properties of road materials and subgrade soils and their seasonal changes and the use of Ground Penetrating Radar technique in traffic infrastructure surveys. The data for this survey was collected mainly in Finland, Texas, Scotland and Sweden and thus presents many kinds of road materials, subgrade soils and climate conditions. The synopsis of this work begins with a presentation of the theory and basic principles of GPR techniques. Special attention is given to the dielectric properties and seasonal changes of unbound road materials and subgrade soils. The synopsis also presents different kinds of GPR hardware systems as well as recommendations and experiences from different data collection, processing and interpretation techniques. Special attention is given to a method whereby GPR data is integrated with other road survey data and then analysed using a number of structural diagnostic methods. Finally, the synopsis provides an overview of of the various GPR applications on roads and streets, bridges, railways and airports. The laboratory test results presented in this work show that the relationship between dielectric value and increasing water content is not linear or exponential but more likely a series of logarithmic functions. Laboratory results also showed that dielectric dispersion, which can be related to poorly performing subgrade soils and road aggregates, takes place mainly in loosely bound adsorption water and capillary water layer. As such these moisture sensitive problem materials can also be identified during the dry summer seasons when they are stiff. Dielectric value and electrical conductivity can also be related to other technical properties of road materials and subgrade soils such as frost susceptibility, shear strength, plastic limit, compaction degree and voids content. Laboratory tests and field data collected using the Percostation technique also demonstrate that a knowledge of seasonal changes and thermodynamics is very important in understanding and modelling the mechanical behaviour of road structures. Finally, laboratory and field tests indicate that colloids have an important role in the failure mechanism of the road materials. This research demonstrates that the GPR technique not only gives valuable structural information on the different types of structures and subgrade soils but it provides a wide range of information of the electrical properties of the materials under survey which can be further related to their mechanical performance. The best information will be gained if GPR data is analysed together with other non destructive testing data collected form the roads, railways and airports.
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Qassim, K. A. S. "Optimisation of focal plane arrays for microwave imaging : printed Yagi, dielectric rod and constant width slot antennas are investigated and optimised for close stacking in focal plane arrays intended for microwave imaging." Thesis, University of Bradford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320761.

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Chen, Feng. "Sustainable Implementation of Electrified Roads : Structural and Material Analyses." Doctoral thesis, KTH, Bro- och stålbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195669.

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Given the promise of the Inductive Power Transfer (IPT) technology for eRoad applications, the potential challenges for a successful integration of dynamic IPT technology into the physical road structure are explored extensively in this research work. The Finite Element Method (FEM) is selected for studying the structural performance of an eRoad under operational conditions. In this, an energy-based finite strain constitutive model for asphalt materials is developed and calibrated, to enable the detailed investigation of the structural response and optimization of the considered eRoad. In the context of enabling both dynamic charging and autonomous driving for future electric vehicles, the influences to the pavement (rutting) performance by the changed vehicle behaviour are investigated as well. Moreover, to study the effect on the IPT system by the integration, the potential power loss caused within eRoad pavement materials is further examined by a combined analytic and experimental analysis. The direct research goal of this Thesis is therefore to enhance the possibility of a sustainable implementation of the eRoad solutions into the real society. At the same time, it aims to demonstrate that the road structure itself is an important part of smart infrastructure systems that can either become a bottleneck or a vessel of opportunities, supporting the successful integration of these complex systems.
Givet de förutsättningar som induktiv energiöverföring (IPT Inductive Power Transfer) har för eRoad applikationerna, utforskas möjligheterna för en framgångsrik integration av dynamisk IPT i den fysiska vägkonstruktionen på en djupgående nivå i detta forskningsarbete. Speciellt har finita elementmetoden använts för att studera det strukturella beteendet hos en e-väg under driftsmässiga förhållanden. Inom detta har en energibaserad konstitutiv model för stora töjningar utvecklats och kalibrerats för att möjliggöra detaljerade undersökningar av strukturell respons och optimering av de föreslagna e-vägarna. I samband med att möjliggöra både dynamisk laddning och autonom körning för framtida elektriska fordon, har beläggningars (spårbildnings)egenskaper studerats utifrån de laddande fordonen beteende. Dessutom för att studera effekten av IPT-systemet har den potentiella energiförlusten inom e-vägars beläggningsmaterial undersökts genom en kombinerad analytisk och experimentell undersökning. Som sådant är det direkta forskningsmålet med denna avhandling att utöka möjligheterna för en hållbar implementering av eRoad systemet inom det verkliga samhället. Samtidigt är målet att visa att vägkonstruktionen i sig själv är en viktig del av det smarta infrastruktursystemet som antingen kan bli en flaskhals eller en bärare av möjligheter, stödjande en framgångsrik implementering av dessa komplexa system.

QC 20161108

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Candelier, Philippe. "Contribution à l'amélioration de la fiabilité des mémoires non volatiles de type flash EEPROM." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10245.

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L'augmentation continue de la densite d'integration des memoires non-volatiles de type flash eeprom passe par la comprehension des mecanismes de degradation intervenant dans le cadre du fonctionnement de ces memoires. Nous avons pu correler les degradations observees sur des dispositifs elementaires (transistors et capacites) aux derives des caracteristiques de la cellule flash. Cette etude demontre que de nouveaux modes de fonctionnement devront etre envisages. Le mode d'effacement par la source, habituellement utilise, pose des problemes d'optimisation technologique pour les cellules de faible longueur de grille (generation de trous chauds difficile a controler). Il devra vraisemblablement etre remplace par l'effacement fn qui est plus fiable pour les criteres d'endurance et de retention apres endurance. Parmi les degradations observees, le probleme principal est l'augmentation de la perte de charge avec l'amincissement des dielectriques et avec la degradation de l'oxyde de grille lors des cycles ecriture/effacement. Face au premier probleme, la mise en place d'une fonction de rafraichissement periodique semble necessaire. Face au second probleme, l'effacement fn a ete optimise en minimisant le champ electrique dans l'oxyde de grille par l'utilisation d'impulsions trapezoidales. Des progres technologiques importants (dielectriques interpolysilicium deposes, isolation laterale de type box) ont ensuite ete introduits dans le procede de fabrication afin permettre une integration plus poussee. La validation de ces evolutions technologiques ouvre les portes de la generation de cellules flash 0. 25 m. Finalement, face au probleme d'augmentation de la densite d'integration, la programmation multi-niveaux est une solution simple dont la fiabilite a ete amelioree grace a la realisation d'un systeme de programmation convergente. La faisabilite d'un doublement de capacite memoire a alors ete demontree.
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Books on the topic "Dielectic rod"

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Al-Qadi, Imad L. Ground-penetrating radar calibration at the Virginia Smart Road and signal analysis to improve prediction of flexible pavement layer thicknesses. Charlottesville, Va: Virginia Transportation Research Council, 2005.

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Wright, A. G. Photocathodes. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199565092.003.0002.

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Optical properties of photocathodes and their characterization in terms of absorptance, transparency, and reflectance in mixed dielectric media are presented. Photometric units and international standards are based on a specified white light source. The electromagnetic spectrum covers about a decade in wavelength and there is a relationship between photon energy and wavelength. Spectral responsivity can be specified in milliamps per watt or as quantum efficiency, η‎(λ‎), in terms of photoelectrons per incident photon. Empirical specifications, based on filtered light from a standard white light source give a measure of the photocathode response to blue, red, and infrared light. Bialkali photocathodes laid on a conducting substrate can operate at ultra-low temperatures approaching absolute zero, while others can survive operation at 200 °C. End window and side window photomultipliers are available in a range of diameters and photocathode types.
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Book chapters on the topic "Dielectic rod"

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Ming, Li, Mats Leijon, Tord Bengtsson, and Mat Darveniza. "Barrier Effects in a Rod/Rod Air-Gap Under DC Voltage." In Gaseous Dielectrics VII, 169–75. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1295-4_32.

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Niver, E. "Tapered Dielectric Rod Antenna." In Springer Proceedings in Physics, 113–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-30636-6_12.

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Mikropoulos, P. N., C. A. Stassinopoulos, and C. G. Yakinthos. "Negative DC Pre-Stressing on Conductor-Rod Gaps under Positive Impulse Voltages." In Gaseous Dielectrics X, 229–34. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-8979-6_32.

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Gourgoulis, D., G. Tonozlis, C. A. Stassinopoulos, and S. Chondrogiannis. "Use of Sphere Gaps and Sphere — Rod Gaps Under Standard Lightning Impulse Voltages." In Gaseous Dielectrics IX, 529–34. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-0583-9_72.

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Supawi, Aiman, Said Ahmad, Nurul Farahin Mohd Joharudin, and Nuraishah Nadhirah Ahmad Idhan. "The Performance of RBD Palm Oil Dielectric Fluid in Comparison with Kerosene in Electrical Discharge Machining (EDM) Process." In Lecture Notes in Mechanical Engineering, 983–95. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0866-7_86.

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Ahmad, Said, Richard Ngalie Chendang, Mohd Amri Lajis, Aiman Supawi, and Erween Abd Rahim. "Machinability Performance of RBD Palm Oil as a Bio Degradable Dielectric Fluid on Sustainable Electrical Discharge Machining (EDM) of AISI D2 Steel." In Advances in Material Sciences and Engineering, 509–17. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8297-0_53.

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Safar, Y., N. H. Malik, A. H. Qureshi, and P. H. Alexander. "EFFECT OF GROUNDED ENCLOSURE ON THE FIELD DISTRIBUTION OF ROD-PLANE GAPS." In Gaseous Dielectrics III, 522–26. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-08-029381-3.50070-8.

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Raghavender, D., and M. S. Naidu. "EFFECT OF FIELD DIVERGENCE ON THE LIGHTNING IMPULSE BREAKDOWN OF ROD-PLANE GAPS IN N2/SF6 MIXTURES." In Gaseous Dielectrics V, 458–63. Elsevier, 1987. http://dx.doi.org/10.1016/b978-0-08-034693-9.50062-9.

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Allibone, T. E., and J. C. Saunderson. "THE NEGATIVE POLARITY D.C. BREAKDOWN OF ROD/PLANE GAPS UP TO 1 MV, AS AFFECTED BY PROTRUSIONS FROM THE PLANE." In Gaseous Dielectrics III, 332–36. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-08-029381-3.50047-2.

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Lü, Gao, and Ning Li. "Research and application of the relation of dielectric constant and moisture content of red clay." In Rock Characterisation, Modelling and Engineering Design Methods, 285–90. CRC Press, 2013. http://dx.doi.org/10.1201/b14917-51.

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Conference papers on the topic "Dielectic rod"

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Chen, Chi-Chih. "UWB dielectric rod antennas." In 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2013. http://dx.doi.org/10.1109/aps.2013.6711804.

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Guo, Min, Jijun Yan, Xiaobo Xuan, and Shunshi Zhong. "Broadband dielectric rod antenna." In 2012 5th Global Symposium on Millimeter Waves (GSMM 2012). IEEE, 2012. http://dx.doi.org/10.1109/gsmm.2012.6314013.

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Ma, Sude, Lisheng Zhong, Wei Wang, Bo Hu, and Chuanxiang Xu. "A New Method to Fabricate GI-POF Rod and its RID Adjustment." In 2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials. IEEE, 2006. http://dx.doi.org/10.1109/icpadm.2006.284334.

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Li, Jin-Yan, Xiao-Ming Feng, and Han-Qing Ma. "An Improved dielectric rod antenna." In 2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR). IEEE, 2019. http://dx.doi.org/10.1109/apsar46974.2019.9048568.

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Kirihara, Soshu. "Ceramics Filler Rods Feeding for Plasma Flame Torch in Thermal Nanoparticles Spraying." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, Y. C. Lau, A. McDonald, F. L. Toma, E. Turunen, and C. A. Widener. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0243.

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Abstract:
Abstract Using nanoparticles filler rod feeding, fine coated layer can be formed successfully with higher deposition late. Nanometer sized alumina particles of 200 nm in average diameter were dispersed into liquid resins at 40 % in volume fraction. The obtained pastes were solidified through heat polymerization to crate composite rods of ᶲ4×200 mm in dimensions. The solid rods were introduced into an acetylene and oxygen gas flame torch for a coaxial direction at 5.0 mm/s in supplying speed by using a mechanical actuator. Fine coated layer of 500 µm in thickness could be formed at 100 µm/s in deposition rate on stainless steel substrates. Effective dielectric constants of these coated layers were measured to estimate porosities by time domain spectroscopic method of electromagnetic waves in a terahertz frequency range. The reducing porosities in the coated layers through the optimization of filler rods feeding speeds and nanoparticles deposition rates will be discussed.
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Saffold, Gabriel L., and Thomas M. Weller. "Design of Cladded Dielectric Rod Antennas." In 2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON). IEEE, 2019. http://dx.doi.org/10.1109/wamicon.2019.8765464.

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Felbacq, Didier, and Guy Bouchitté. "Homogenization of dielectric rod-type metamaterials." In Integrated Photonics Research, Silicon and Nanophotonics. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/iprsn.2011.imc1.

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Panin, Sergey B., Ilhami Unal, Aysun Sayinti, Turgut Ozturk, and Mustafa Tekbas. "Permittivity measurements for dielectric lens and dielectric rod antenna designs." In 2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW). IEEE, 2016. http://dx.doi.org/10.1109/msmw.2016.7538061.

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Prasad, Chandra Shekhar, A. Biswas, and M. J. Akhtar. "SIW slot fed circular dielectric rod antenna." In 2017 IEEE Applied Electromagnetics Conference (AEMC). IEEE, 2017. http://dx.doi.org/10.1109/aemc.2017.8325744.

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Degtyarev, Sergey A., Svetlana N. Khonina, Andrew V. Ustinov, and Nicolay L. Kazanskiy. "Lightning-rod effect near sharp dielectric structures." In Optical Technologies for Telecommunications 2014, edited by Vladimir A. Andreev, Vladimir A. Burdin, Albert H. Sultanov, and Oleg G. Morozov. SPIE, 2015. http://dx.doi.org/10.1117/12.2180353.

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Reports on the topic "Dielectic rod"

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Doran, S. H., and R. Mittra. An Experimental Study of Dielectric Rod Antennas for Millimeter-Wave Imaging Applications. Fort Belvoir, VA: Defense Technical Information Center, March 1985. http://dx.doi.org/10.21236/ada155832.

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