Numerical study of a dual-polarized Focal Plane Array (FPA) with Vivaldi elements placed in the vicinity of a large feed box using the parallelized FDTD code GEMS

Author

Huang, Neng-Tien ; Mittra, Raj ; Ivashina, M. ; Maaskant, R.

Author_Institution

EE Dept., Pennsylvania State Univ., University Park, PA, USA

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents some results of a numerical modeling study of a focal plane array (FPA) comprising of 144 Vivaldi antenna elements, and complements the results which were earlier reported in. In the present study, we consider two EM-problems of different complexity, namely, (i) the free-standing FPA with a finite ground plane that was modeled to evaluate the accuracy of the simulated patterns by comparing these to the measurements in the anechoic chamber, and (ii) the array when placed in the window of a large PEC box representing the feed-carrying structure of the 25-m WSRT reflector system.

Keywords

anechoic chambers (electromagnetic); antenna arrays; finite difference time-domain analysis; multifrequency antennas; reflector antenna feeds; EM-problems; PEC box; Vivaldi antenna elements; WSRT reflector system; anechoic chamber; dual-polarized focal plane array; feed-carrying structure; finite difference time-domain analysis; numerical modeling; parallelized FDTD code GEMS; size 25 m; Antenna arrays; Antenna measurements; Broadband antennas; Computational modeling; Feeds; Finite difference methods; Impedance; Radio astronomy; Time domain analysis; Vivaldi antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE

Conference_Location

Charleston, SC

ISSN

1522-3965

Print_ISBN

978-1-4244-3647-7

Type

conf

DOI

10.1109/APS.2009.5171753

Filename

5171753