Title:

Experimental Analysis of a Directive Antenna with a 3D-EBG Superstrate, Journal of Telecommunications and Information Technology, 2017, nr 3

Creator:

Marciniak, Marian ; Frezza, Fabrizio ; Pajewski, Lara ; Piuzzi, Emanuele ; Rossi, Giorgia V.

Subject and Keywords:

periodic structures ; electromagnetic bandgap materials ; woodpile ; directivity enhancement ; Fabry-Perot cavities

Description:

A three-dimensional electromagnetic crystal is employed as a directivity-enhancing superstrate for planar antennas. The crystal is a woodpile made of alumina rods. In a shielded anechoic chamber, the performance of a patch antenna covered with the woodpile is measured. The superstrate is positioned at different distances from the antenna and its orientation is varied in the 8–12 GHz frequency range. The return loss, gain and radiation pattern in the E- and H-planes are measured. The electromagnetic behavior of Fabry-Perot cavities with woodpile mirrors, equivalent to the compound radiator, is also studied. The main effect of the crystal on the antenna performance is an enhancement of about 10 dB in maximum gain. A rather complete series of experiments is presented, highlighting the role of the periodic structure in the directivity enhancement and allowing a deeper understanding of the electromagnetic phenomena involved in EBG resonator antennas. Benefits and disadvantages of this kind of antennas are discussed and ideas for future research are given.

Publisher:

National Institute of Telecommunications

Date:

2017, nr 3

Resource Type:

artykuł

Format:

application/pdf

Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852

Source:

Journal of Telecommunications and Information Technology

Language:

ang

Rights Management:

Biblioteka Naukowa Instytutu Łączności