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Antenna array Complex directional antenna consists of separate near-omnidirectional antennas (radiating elements) positioned in the space and driven by high-frequency … (from 'Glossary' of our website) |
All ArchivesAbout the measurement inaccuracies of dispersion diagrams in Fresnel zoneThe measurement inaccuracies of dispersion diagrams of an arbitrary body in Fresnel zone that arise because of the finite distance between the body and the radiating antenna, and the body and the receiving antenna, as well as the directivity of the antennas are considered. The measurement inaccuracies of dispersion diagrams in ... Modified: 12/28/2005 Tags: diagram , Fresnel zone , antenna , collimator Path: Home / Publications / Archives / 2005 / About the … Restoring the antenna directional diagram using the Fresnel zone measurements on a measurement stand in a far zoneThe method of determining the antenna directional diagram using the amplitude and phase measurements in the Fresnel zone is considered; the mathematical rationale of the method is given along with the results of computer and experimental modeling and the samples of using when measuring the high aperture antennas in an anechoic room with a 80 m route on a measurement ... Modified: 12/14/2005 Tags: antenna , directional diagram , Fresnel zone , measurement , far zone Path: Home / Publications / Archives / 2005 / Restoring the … Optical Fresnel–Zone Gain of a Rectangular ApertureAn equation for the on-axis gain of a uniformly illuminated rectangular aperture is derived which is valid in the Optical Fresnel Zone. This equation is formulated in terms of the ordinary radiation field gain multiplied by a correction factor which depends upon the aperture dimensions and the distance, R, from the aperture at which the gain is measured.
IRE Transactions ... Modified: 12/07/2005 Tags: Fresnel zone , aperture , distance Path: Home / Publications / Archives / 2005 / Optical Fresnel–Zone … Sorted by relevance / Sort by date Back to the list |
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