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Treatise of the Running-Wave Antenna

Treatise of the Running-Wave Antenna

von Vladimir Coosk
Softcover - 9783659711756
35,90 €
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Beschreibung

New calculation of optimal parameters for Uda-Yagi plane antenna with elements parallel to ideally conducting Earth is presented. Antenna consists of cylindrical elements same diameter each, namely reflector, driven element and a number of directors with lengths slightly varying to give the radiation pattern desirable. Calculations are aimed at maximizing forward/back intensity ratio called "shield coefficient" and/or direct wave intensity. We study the case of four directors, which may be modified with no loss of generality. Simple analytical expressions for current distribution in large and small (in comparison to wavelength) cylindrical antennas were given before .We procreate numerical method ( with explicit accuracy evaluation) for calculation of the Green's function free of restrictions which all of these would entail and implement it to the Uda-Yagi antenna with elements of finite electrical conductivity . Skin depth should be small compared to the diameter of antenna elements. Current distributions in the reflector, driven element and directors, which produce the electric field corresponding to Ohm's Law on their lateral surfaces and turn into zeros at the edges.

Details

Verlag LAP Lambert Academic Publishing
Ersterscheinung Juni 2015
Maße 22 cm x 15 cm x 0.4 cm
Gewicht 102 Gramm
Format Softcover
ISBN-13 9783659711756
Seiten 56

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