Title :
A frequency-tunable metamaterial-based antenna using a reconfigurable AMC groundplane
Author :
Salucci, Marco ; Oliveri, G. ; Gregory, Mark ; Werner, David ; Massa, A.
Author_Institution :
ELEDIA Res. Center, Univ. of Trento, Trento, Italy
Abstract :
The design of a low-profile narrowband antenna that is tunable over a wide frequency range is presented. A spline-based Ultra-Wideband (UWB) antenna is synthesized by means of a time-domain-based PSO and is mounted on top of a reconfigurable Artificial Magnetic Conductor (AMC) obtained by replicating a square unit cell in a 15×15 periodic lattice. The AMC is composed by a planar array of periodic metallic strips printed on top of a PEC-backed dielectric substrate, connected by tunable capacitors (varactors), and has been designed to work within the 1-4 [GHz] bandwidth. The reflection coefficient of the resulting narrowband antenna system can be easily controlled inside a wide frequency range by tuning the capacitance value C of the varactors inside the AMC groundplane.
Keywords :
metamaterial antennas; particle swarm optimisation; planar antenna arrays; time-domain analysis; ultra wideband antennas; PEC-backed dielectric substrate; UWB antenna; artificial magnetic conductor; bandwidth 1 GHz to 4 GHz; frequency-tunable metamaterial-based antenna; low-profile narrowband antenna design; periodic lattice; periodic metallic strips; planar antenna array; reconfigurable AMC ground plane; reflection coefficient; spline-based ultrawideband antenna; square unit cell; time-domain-based PSO; tunable capacitors; varactors; Conductors; Splines (mathematics); Ultra wideband antennas; Wireless communication; Tunable artificial magnetic conductor (AMC); spline-based UWB antenna; tunable antenna;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901684
