Title :
Fresnel-Zone-Based Focused Planar Array
Author :
Leon, German ; Las Heras, Fernando
Author_Institution :
Dept. of Electr. Eng., Univ. de Oviedo, Gijón, Spain
Abstract :
This letter presents a new class of focused array, based on Fresnel zone lenses. A punctual isotropic sources model is used to compare this novel array to a periodic one, both with the same size. The Fresnel-zone-based array (FZBA) can reduce the number of radiators without losing focusing characteristics. An FZBA has been implemented in a realistic array in order to demonstrate its simplicity. It has been simulated with a commercial tool, showing the same spot size but lower secondary lobes level than the punctual model.
Keywords :
lens antennas; lenses; planar antenna arrays; FZBA; Fresnel zone lenses; Fresnel-zone-based array; isotropic sources model; planar antenna array; Arrays; Electric fields; Fresnel reflection; Microstrip; Microstrip antenna arrays; Fresnel zone lenses; microstrip array; near-field focusing;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2299405
