In this work, bandwidth properties of planar leaky-wave antennas made of a grounded dielectric slab covered with a partially-reflecting surface are investigated. The partially-reflecting surface is described by an equivalent shunt susceptance. It is shown that, with respect to a constant frequency-independent susceptance, the antenna bandwidth is not reduced using a frequency-dependent model, except for very specific cases. With reference to passive lossless structures, numerical examples are provided that illustrate the attainable performance and confirm the theoretical analysis.
Bandwidth analysis of highly-directive planar radiators based on partially-reflecting surfaces / Lovat, Giampiero; Burghignoli, Paolo; F., Capolino; D. R., Jackson. - ELETTRONICO. - (2006), pp. 1-6. (Intervento presentato al convegno 2006 European Conference on Antennas and Propagation tenutosi a Nice (F) nel 6-10 Novembre 2006) [10.1109/EUCAP.2006.4584719].
Bandwidth analysis of highly-directive planar radiators based on partially-reflecting surfaces
LOVAT, GIAMPIERO;BURGHIGNOLI, Paolo;
2006
Abstract
In this work, bandwidth properties of planar leaky-wave antennas made of a grounded dielectric slab covered with a partially-reflecting surface are investigated. The partially-reflecting surface is described by an equivalent shunt susceptance. It is shown that, with respect to a constant frequency-independent susceptance, the antenna bandwidth is not reduced using a frequency-dependent model, except for very specific cases. With reference to passive lossless structures, numerical examples are provided that illustrate the attainable performance and confirm the theoretical analysis.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
