Title :
Dual band low-profile zeroth-order metamaterial antenna
Author :
Nabil, D. ; Mohamed, Hager ; Fethi, C. ; Jacques, D.
Author_Institution :
Higher Sch. of Commun., Univ. of Cartage, Ariana, Tunisia
Abstract :
In this paper; we study a dual band low-profile small antenna resonating at 434 MHz and 868 MHz. The radiation mechanism of the antenna is due to the radiating posts which are connected in series to an inductor at each edge of a transmission line in between. Calibrating the flowing currents in the vias by tuning the inductances values, radiated fields are constructive in the far field region. Full-wave simulations were carried in order to study the properties of the antenna at two different frequencies. The antenna offers a fractional bandwidth of 0.73% and 1.95%, a radiation efficiency of 35.74% and 74.87% at 434 MHz and 868 MHz respectively, also a monopole-like radiation pattern is observed at each band.
Keywords :
UHF antennas; antenna radiation patterns; calibration; inductors; metamaterial antennas; antenna radiation mechanism; dual band low-profile small antenna resonance; dual band low-profile zeroth-order metamaterial antenna; efficiency 35.74 percent; efficiency 74.87 percent; flowing current calibration; fractional bandwidth; frequency 434 MHz; frequency 868 MHz; full-wave simulation; inductor; monopole-like radiation pattern; radiated field; radiation efficiency; transmission line edge; Antenna radiation patterns; Bandwidth; Inductors; Metamaterials; Microstrip antennas; Double Band; Low-Profile small antennas; Metamaterials; Tunable inductors; vertical polarization;
Conference_Titel :
Mediterranean Microwave Symposium (MMS), 2011 11th
Conference_Location :
Hammamet
Print_ISBN :
978-1-4577-1814-4
Electronic_ISBN :
2157-9822
DOI :
10.1109/MMS.2011.6068543
