Wide Bandwidth Arrays of Vivaldi Antennas

Author

Schaubert, D.H. ; Elsallal, Wajih ; Kasturi, S. ; Boryssenko, A.O. ; Vouvakis, Marinos N. ; Paraschos, G.

Author_Institution

Center for Adv. Sensor & Commun. Antennas, Massachusetts Univ., Amherst, MA

fYear

2008

fDate

13-13 March 2008

Firstpage

1

Lastpage

20

Abstract

Several examples of wide bandwidth Vivaldi antenna are presented to illustrate bandwidths up to 10:1. Modern computational methods can be used by experienced designers to achieve this performance. Traditional Vivaldi antenna arrays cannot be easily fabricated as modular structures because they require electrical contact between adjacent elements. The Balanced Antipodal Vivaldi Antenna is modular, but currently is limited to approximately 4:1 bandwidth in scanning arrays. Initial studies of several wide bandwidth arrays indicate that they produce little dispersion of short-pulse signals within their operating bandwidth. Truncation effects in finite arrays operating over wide bandwidth remain to be understood and characterized. For these studies, new computational methods like finite-element domain decomposition are required.

Keywords

antenna arrays; broadband antennas; contact potential; finite element analysis; Vivaldi antennas; electrical contact; finite-element domain decomposition; wide bandwidth arrays;

fLanguage

English

Publisher

iet

Conference_Titel

Wideband, Multiband Antennas and Arrays for Defence or Civil Applications, 2008 Institution of Engineering and Technology Seminar on

Conference_Location

London

ISSN

0537-9989

Print_ISBN

978-0-86341-903-4

Type

conf

Filename

4510671