Results 251 to 260 of about 1,095,168 (305)
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Sharp cutoff radiation patterns
IEEE Transactions on Antennas and Propagation, 1979A method is described for estimating the available slope (dB/ deg) for the design of a sharp cutoff radiation pattern with a given aperture size, sidelobe level, and ripple factor. Curves are presented which relate slope factor (dB/deg/wavelength of aperture), sidelobe level, and ripple factor.
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Transducer radiation pattern modification
The Journal of the Acoustical Society of America, 1975Ultrasonic transducers were used to simulate radiation patterns of an electromagnetic cavity-backed slot antenna when mounted on a flat ground plane as well as by itself in free space. A 12-in. spherical transducer excited in radial mode was selected to provide essentially isotropic coverage generated by the antenna.
H. S. Hayre, M. S. Putcha
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Plasma Antenna Radiation Patterns
AIP Conference Proceedings, 2003Elevation angle pattern measurements of our Plasma Antenna are presented and compared with results from computer models. Good agreement is found for the measurements with patterns predicted by our linearly decreasing conductivity model for the plasma antenna, derived from computer models using readily available packages.
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Patterns of care in radiation oncology
Seminars in Oncology Nursing, 1999To provide an overview of the Patterns of Care Study (PCS) in radiation oncology and to discuss the progress and impact of the PCS on clinical practice.Research studies and review articles.The PCS has demonstrated tremendous impact on the delivery of radiation oncology services in the United States.
S W, Behrend, L R, Coia
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1969
Having examined the boundary value problem, we now want to consider a problem which might be called the boundary problem at infinity, because we want to study solutions of the Maxwell equations which have a specified asymptotic behavior. We already discussed this question in § 8 for the case e = μ = 1 and here we assume again these same values of e and
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Having examined the boundary value problem, we now want to consider a problem which might be called the boundary problem at infinity, because we want to study solutions of the Maxwell equations which have a specified asymptotic behavior. We already discussed this question in § 8 for the case e = μ = 1 and here we assume again these same values of e and
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Radiation patterns from vortex-antivortex annihilation
Physical Review D, 1990We simulate vortex-antivortex annihilation in (2+1)-dimensional O(2) scalar field theory, under a variety of initial conditions. In all cases the energy density of Goldstone-boson radiation shows a sin{sup 2}{alpha} dependence on the angle {alpha} from the final approach due to emission from linear acceleration during the approach and from the overlap ...
, Hecht, , DeGrand
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Bremsstrahlung Spiral Radiation Pattern
2020Spiral radiation pattern of Bremsstrahlung process.
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Intensity patterns of solar ultraviolet radiation
Environmental Research, 1977Abstract Using field measurements of ultraviolet radiation, intensity patterns by time of day and time of year are examined. Depending on location, 39 to 80% of the half-hourly readings of sufficient intensity to produce minimum erythema occur between 10:00 am and 2:00 pm during the late spring and early summer months of May through August.
J, Scotto, T R, Fears
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Calculating antenna radiation patterns
Electrical Engineering, 1944CALCULATIONS of the horizontal relative field patterns of antennas are long and laborious and increase in complexity with the number of antenna elements employed. Present calculating machines are useful only for antenna-beam arrays consisting of not over three elements.
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Radiation Pattern of Parabolic Reflector
IETE Technical Review, 1999Radiation pattern of parabolic reflector can be computed using various numerical methods. Moment method is convenient for small objects in terms of wavelength. When the dimension of the radiating objects are large compared to wavelength, high frequency asymptotic techniques like GTD (Geometrical Theory of Diffraction) gives very accurate results in ...
K Saroja, S Sanyal
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