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Modelling of a circular Fresnel zone plate lens for electromagnetic wave antenna application

✍ Scribed by Tae Yong Kim; Yukio Kagawa; Ling Yun Chai

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
714 KB
Volume
18
Category
Article
ISSN
0894-3370

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✦ Synopsis

The application of Fresnel lenses is often made to the receiving antennas for television and radio by way of the satellite communication, for the astronomical observation and so on. Their advantage lies in structural simplicity and low cost. A typical Fresnel zone plate lens (FZPL) consists of coaxial conductive ring bands separately placed over the surface of a dielectric plate. For the antenna application a receiving horn is provided at the focal point. In our previous work, the experiment was carried out for this arrangement, where the horn aperture is larger than the wavelength. Comparison was made with the solution of the Kirchhoff's scalar formula with reasonable agreement (

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