DocumentCode
1963194
Title
Power Transfer in the Fresnel Zone at Mm-Wavelengths
Author
Schaerer, G.
Author_Institution
Institute of Applied Physics, Sidlerstr.5, 3012 Bern,Switzerland
fYear
1974
fDate
10-13 Sept. 1974
Firstpage
207
Lastpage
211
Abstract
The power transfer efficiency(ratio of received to transmitted power) between two elliptical antennas in the Fresnel zone is investigated experimentally. The design procedure for an optimum power transfer system is analyzed. Pyramidal horns in the foci of the ellipsoids enable an optimum phase illumination. Deviations from a Gaussian amplitude illumination (which is close to the optimum) cause a significant decrease of the efficiency, which however is still larger than it would be for a guided or a free path transmission in the far-field of two antennas.
Keywords
Antenna feeds; Antennas and propagation; Apertures; Ellipsoids; Fresnel reflection; Horn antennas; Lighting; Receiving antennas; Reflector antennas; Transmitting antennas;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1974. 4th European
Conference_Location
Montreux, Switzerland
Type
conf
DOI
10.1109/EUMA.1974.332042
Filename
4130683
Link To Document