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Voltage breakdown characteristics of microwave antennas
IRE International Convention Record, 1959At low pressures, antennas are susceptible to voltage breakdown. In the case of missiles, for example, there are indications that very low power is sufficient to initiate and maintain breakdown. Since it is essential that the system performance is not interrupted for high-altitude operation, an experimental investigation has been made to study the ...
J. Chown, W. Scharfman, T. Morita
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Proceedings of the IRE, 1947
The diffraction theory of Stratton and Chu is applied to a calculation of the vertical polar diagram and the gain of a parabolic cylindrical antenna. This antenna is fed by a line source having a known energy distribution and polarization. A numerical calculation for a particular profile is carried out, and the results are compared with those obtained ...
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The diffraction theory of Stratton and Chu is applied to a calculation of the vertical polar diagram and the gain of a parabolic cylindrical antenna. This antenna is fed by a line source having a known energy distribution and polarization. A numerical calculation for a particular profile is carried out, and the results are compared with those obtained ...
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Microwave Radiation Hazards around Large Microwave Antenna
American Industrial Hygiene Association Journal, 1973The microwave radiation hazards associated with the use of large antennas become increasingly more dangerous to personnel as the transmitters go to ever higher powers. The near field area is of the greatest concern,, It has spill over from sub-reflector and reflections from nearby objects. Centimeter waves meeting in phase will reenforce each other and
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Microwave Optics: The Optics of Microwave Antenna Design
Optica Acta: International Journal of Optics, 1977(1977). Microwave Optics: The Optics of Microwave Antenna Design. Optica Acta: International Journal of Optics: Vol. 24, No. 10, pp. 1081-1081.
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Microwave Aperture Antennas and Diffraction Theory*
Journal of the Optical Society of America, 1962Various studies of diffraction of electromagnetic waves motivated by and applied to work on microwave aperture antennas are reviewed in relation to their significance to the study of optics. A critique of the Kirchhoff formula is presented to show the essentially heuristic nature of the formula and its range of applicability.
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Compact Antenna for Microwave Imaging Systems
2008 Cairo International Biomedical Engineering Conference, 2008A planar antenna with ultra wideband directive performance is presented. It is aimed to be part of a microwave imaging system for breast cancer detection. The antenna is designed to operate efficiently across the ultra wideband frequency (3.1 GHz to 10.6 GHz). It has a very compact size with overall dimensions of 0.9 cmtimes1 cm. The antenna is assumed
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Thermal noise of microwave antennas
2015 Loughborough Antennas & Propagation Conference (LAPC), 2015The results of the comparative evaluation of thermal noise parameters of plasma, dielectric and metal microwave antennas in a wide frequency range are given.
V. V. Popov, V. V. Ovsyanikov
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Antenna systems for microwave radiometers
Nanotechnology : the development , application - XXI CenturyThe paper provides an overview of the antenna systems used for microwave radiometers. Due to the development of precision agriculture, the use of radiometers for monitoring soil moisture relief is becoming relevant. Microminiaturization of antenna systems expands the possibility of using radiometers using unmanned aerial vehicles and ground-based ...
A.G. Gudkov +3 more
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Parabolic-Antenna Design for Microwaves
Proceedings of the IRE, 1947This paper is intended to give fundamental relations and design criteria for parabolic radiators at microwave frequencies (i.e., wavelengths between 1 and 10 centimeters). The frst part of the paper discusses the properties of the parabola which make it useful as a directional antenna, and the relation of phase polarization and amplitude of primary ...
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