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Antenna Array

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 web–site)

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About the measurement inaccuracies of dispersion diagrams in Fresnel zone

The 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 zone

The 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 Aperture

An 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 …

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GuidesArray Coaxial 0.1.2

GuidesArray Coaxial™ is used by engineers for projecting and exploring the characteristics of two-dimensional periodic phased antenna arrays for coaxial waveguides.


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