Title :
Indoor signal focusing by use of Fresnel zone plate
Author :
Hristov, H.D. ; Feick, R. ; Grote, W. ; Fernandez, Pilar
Author_Institution :
Departamento de Electronica, Univ. Tecnica Federico Santa Maria, Valparaiso, Chile
Abstract :
A simple Fresnel zone plate for indoor focusing of 2 GHz band signals is proposed and studied. It consists of concentric metal rings mounted on the outside of an exterior wall. A three-ring zone plate has a through-wall focusing efficiency of 15 dB (measured) and 14 dB (calculated), and axial defocusing of 0.22 m.
Keywords :
focusing; indoor radio; zone plates; 2 GHz; Fresnel zone plate; axial defocusing; focusing efficiency; indoor signal focusing; metal ring; radio communication;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030071
