DocumentCode
343835
Title
Theoretical and experimental investigations on focusing properties of the Fresnel zone lens and plate
Author
Yamauchi, J. ; Nakano, H.
Author_Institution
Coll. of Eng., Hosei Univ., Tokyo, Japan
Volume
2
fYear
1999
fDate
11-16 July 1999
Firstpage
746
Abstract
the In this article, we discuss focusing properties of conducting and dielectric cylinders on the basis of the Fresnel zone principle. The radiation patterns when the cylinders are excited with an isotropic source are evaluated using the boundary element method. Helix antennas combined with a Fresnel zone plate are also reported. Enhanced gain characteristics are experimentally demonstrated.
Keywords
antenna radiation patterns; boundary-elements methods; focusing; helical antennas; lens antennas; zone plates; Fresnel zone lens; Fresnel zone plate; boundary element method; conducting cylinders; dielectric cylinders; focusing properties; gain characteristics; helix antennas; isotropic source excitation; radiation patterns; Antenna radiation patterns; Boundary element methods; Dielectrics; Electromagnetic scattering; Engine cylinders; Fresnel reflection; Helical antennas; Lenses; Permittivity; Tellurium;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location
Orlando, FL, USA
Print_ISBN
0-7803-5639-x
Type
conf
DOI
10.1109/APS.1999.789422
Filename
789422
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