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, Kommunikations- och antennsystem, 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 6 1798-1807

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/TAP.2011.2122213

Mer information

Skapat

2017-10-08