Amador-Pérez, Antonio

Publication Search Results

Now showing 1 - 1 of 1

Characterization of asymmetric annular-slot antennas and design of a tunable asymmetric annular-slot antenna with ferroelectric material
(2006) Amador-Pérez, Antonio; Rodríguez-Solís, Rafael A.; College of Engineering; Colom-Ustariz, José; Fernández, Félix; Department of Electrical and Computer Engineering; Gonzalez-Barreto, David
A statistical characterization of an annular slot ring antenna using DOE is presented. The models give an understanding on the effects of the antenna design parameters on the responses of the antenna. These models are validated by comparing the values from simulated antennas with the values predicted by the models. Also, antennas were fabricated and measured to further validate the results and optimum designs were obtained for maximum bandwidth and for perfect match using the models. A tunable antenna using ferroelectric material operating at around 30 GHz is presented. One design with a magnesium oxide substrate of thickness equal to 0.302 mm presents a tunability of 14.78% when the dielectric permittivity of BSTO3 is varied from 600 to 1200. A directivity of only -8.8 dB was achieved for this antenna. A second design is presented with a substrate of thickness equal to 0.800 mm; this antenna has two resonant frequencies around 30 GHz, one with a tunability of 1.27%, the second with a tunability of 3.31%. The directivity of this antenna was between 0.567 dB and 1.313 dB.