Aperiodic Antenna Array for Secondary Lobe Suppression

Author(s)

Gabrielli, Lucas H. ^[1] ; Hernandez-Figueroa, Hugo E. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Sch Elect & Comp Engn, BR-13083852 Campinas, SP - Brazil

• Document type: Journal article
• Source: IEEE PHOTONICS TECHNOLOGY LETTERS; v. 28, n. 2, p. 209-212, JAN 15 2016.
• Web of Science Citations: 6

Abstract

We propose an aperiodic antenna array to suppress secondary radiation lobes in widely spaced arrays. We show that the use of Fermat's spiral as a template for the antenna array leads to similar results in terms of sidelobe level and bandwidth as those obtained by computationally expensive non-linear optimization methods. Furthermore, by maintaining the distances between neighbors approximately constant, the increase in array footprint is kept approximately within 25% of an equivalent periodic array, a key feature for space-constrained applications. Based on the straightforward computation of our method, we are able to present the results for arrays varying from 4 to 2048 elements and minimal spacing between the antennas up to ten wavelengths. (AU)

• FAPESP's process: 08/57857-2 - Photonics for optical communications
• Grantee: Hugo Luis Fragnito
• Support type: Research Projects - Thematic Grants
• FAPESP's process: 12/22517-2 - Development of an array of coherent Nanoantennas
• Grantee: Lucas Heitzmann Gabrielli
• Support type: Scholarships in Brazil - Post-Doctorate