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Recent Patents on Engineering

Editor-in-Chief

ISSN (Print): 1872-2121
ISSN (Online): 2212-4047

Research Article

Active Vivaldi Antenna Timed-Array for Ultra-Wideband 3D Beamforming

Author(s): Alexandre M. de Oliveira, Jorge R. B. Garay, Jair P. de Souza, Adriano M. da Silva, Marcelo B. Perotoni, Wesley Becari and João F. Justo

Volume 10, Issue 2, 2016

Page: [121 - 127] Pages: 7

DOI: 10.2174/1872212110999160725101724

Price: $65

Abstract

Background: This paper presents a three-dimensional antenna array for electronic high-resolution beam spatial scanning.

System and Design Structure: The system consists of five identical elements, arranged in a cross shape (3+3), where each element is formed by a Vivaldi planar antenna equipped with a Ultra Wide Band (UWB) pulse generator (PG), connected to a programmable delay circuit (PDC). The Vivaldi antennas were designed with copper and a Roger (RO3203) substrate, while the PG and PDC were designed using the 0.18μm CMOS Standard process. The project was designed in an integrated simulation environment (electric + electromagnetic), combining LTSpice 4, MicroWind 3.5 and CST MW Studio 2011 design tools. Monte Carlo simulations showed fully consistent results with those of theoretical models. The main lobe has a gain of 13dB, 28º × 27º angular width, a beam steering between 31º and -24º for θ, and between 29º and -29º for the φ angles at 6.2GHz of center frequency.

Keywords: Timed antenna array, UWB, VLSI, beamforming, phased-array.

Graphical Abstract

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