An active AMC ground plane for tunable low-profile antennas

Author

Costa, Filippo ; Talarico, Salvatore ; Monorchio, Agostino ; Valeri, Michele Fabio

Author_Institution

Dept. of Inf. Eng., Univ. of Pisa, Pisa

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

We have designed an active Artificial Magnetic Conductor able to change its resonance by varying the diode polarization. This type of surface has been employed as backing plane for a bow-tie radiating element in order to synthesize a tunable and steerable antenna. The AMC allows to obtain a thin structure with a thickness equal to lambda/24, able to dynamically change impedance matching frequency. Moreover, the possibility of performing a beam scanning has been shown in correspondence of the mid-band frequency.

Keywords

active antennas; antenna radiation patterns; beam steering; bow-tie antennas; conducting bodies; electromagnetic wave polarisation; frequency selective surfaces; impedance matching; magnetic devices; active AMC ground plane; artificial magnetic conductor; beam scanning; bow-tie radiating element; diode polarization; impedance matching frequency; metallic backing plane; mid-band frequency; steerable antenna; tunable low-profile antenna; Capacitance; Conductors; Diodes; Frequency selective surfaces; Impedance matching; Periodic structures; Polarization; Tunable circuits and devices; Varactors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619192

Filename

4619192