Analysis of large microstrip-fed tapered slot antenna arrays by combining electrodynamic and quasi-static field models
Artikel i vetenskaplig tidskrift, 2011

A reduced-order model for large arrays of microstrip-fed tapered slot antennas (TSAs) is presented. The currents on the antenna conductors are modeled by a relatively small number of physics-based macro-domain basis functions through a technique which is known as the characteristic basis function method (CBFM). The array is treated as a metal-only structure, while the wideband microstrip feeds are separately modeled using quasi-static circuit models. It is demonstrated that, even though the dielectric-supported feeds are non-shielded and therefore form an integral part of each radiating antenna element, the feeds can be modeled independently from the strongly coupled antenna elements. Validation of the combined antenna-feed model has been carried out through the measurements of several practically realized TSA arrays, among them a 8 × 7 × 2 dual-polarized array. The results demonstrate good agreement over a large scan range, as well as over a wide frequency band. The polarization-discrimination capabilities of the antenna, when operating in phased-array mode, have been analyzed in the context of radio-astronomical applications.

characteristic basis function method (CBFM)

method of moments (MoM)

hybrid modeling techniques

Antenna arrays

tapered slot antennas (TSAs)

radio astronomy

Författare

Rob Maaskant

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Marianna Ivashina

Chalmers, Rymd- och geovetenskap, Avancerad mottagarutveckling

Oleg Iupikov

Chalmers, Signaler och system

E. A. Redkina

S Kasturi

D. H. Schaubert

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 59 1798-1807

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/TAP.2011.2122213