Title :
A radial line slot array focusing in the near field: Analysis and design
Author :
Ettorre, Mauro ; Casaletti, M. ; Valerio, Guido ; Le Coq, Laurent ; Sauleau, Ronan ; Pavone, S.C. ; Albani, Matteo
Author_Institution :
Inst. d´Electron. et de Telecommun. de Rennes (IETR), Univ. of Rennes 1, Rennes, France
Abstract :
A radial line slot array antenna focusing in its near field is presented. The antenna design is made in such a way to control the side lobe level and beamwidth of the normal component of the electric field with respect to the radiating aperture. A set theoretic approach and alternate projection method is used to derive the aperture field distribution fitting the requirements over the near field. The aperture field distribution is synthesized by properly placing and sizing the slots of the radial line slot array. The antenna is centrally fed by a simple coaxial probe. The antenna design is validated by a prototype and measurements at 12.5 GHz.
Keywords :
antenna radiation patterns; aperture antennas; focusing; set theory; slot antenna arrays; antenna design; aperture field distribution; coaxial probe; electric field component; frequency 12.5 GHz; near field antenna; normal component beamwidth; projection method; radial line slot array antenna; radiating aperture; side lobe level; slots size; Apertures; Conferences; Decision support systems; Europe; Focusing; Radial line slot array; near-field focusing;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901996
