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A Novel Structure and Design Optimization of Compact Spline-Parameterized UWB Slot Antenna

Koziel S., Bekasiewicz A.

Metrology and Measurement Systems

2016

Vol. 23, nr 4

637--643

In this paper, a novel structure of a compact UWB slot antenna and its design optimization procedure has been presented. In order to achieve a sufficient number of degrees of freedom necessary to obtain a considerable size reduction rate, the slot is parameterized using spline curves. All antenna dimensions are simultaneously adjusted using numerical optimization procedures. The fundamental bottleneck here is a high cost of the electromagnetic (EM) simulation model of the structure that includes (for reliability) an SMA connector. Another problem is a large number of geometry parameters (nineteen). For the sake of computational efficiency, the optimization process is therefore performed using variable-fidelity EM simulations and surrogate-assisted algorithms. The optimization process is oriented towards explicit reduction of the antenna size and leads to a compact footprint of 199 mm2 as well as acceptable matching within the entire UWB band. The simulation results are validated using physical measurements of the fabricated antenna prototype.

Analysis of ultra-wideband linear antenna arrays

Garbaruk M.

Przegląd Elektrotechniczny

2012

R. 88, nr 8

75-76

The article presents results of a computer simulation of ultrawideband (UWB) linear antenna arrays. UWB antenna arrays consisted of 2- 5 elliptical radiators were considered. Different spacing between radiators was included in simulations. Characteristics of matching, frequency characteristics of antenna gain, antenna transmittances and shapes of an electric field radiated by the considered antenna arrays were shown and discussed in the article.

W artykule przedstawione zostały wyniki komputerowej symulacji ultraszerokopasmowych (UWB) liniowych układów antenowych. Przeanalizowane zostały układy zawierające 2-5 eliptycznych promienników, rozmieszczonych w różnych odległościach. Przedstawione zostały charakterystyki dopasowania, zysku energetycznego oraz omówione promieniowanie sygnałów UWB.