Title :
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
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;
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
DOI :
10.1109/APS.2008.4619192
