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dc.contributor.advisorRodríguez-Solís, Rafael A.
dc.contributor.authorAmador-Pérez, Antonio
dc.description.abstractA 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.en_US
dc.description.abstractUna caracterización estadística de una antena de ranura anular utilizando diseño de experimentos es presentada. Los modelos obtenidos proveen un entendimiento acerca del efecto de los parámetros de diseño sobre las respuestas de la antena. Estos modelos son validados comparando los valores de antenas simulados con los valores predichos por los modelos. Además, se fabricaron y midieron antenas para la validación de los modelos y se obtuvieron diseños óptimos de ganancia máxima y de pareo exacto de impedancia utilizando los modelos. Una antena sintonizadle utilizando material ferroeléctrico operando a 30 GHz es presentada. Un diseño con un sustrato de óxido de magnesio con grosor igual a. 0.302 mm y una sintonización de 14.78% cuando la permisividad eléctrica de BSTO3 es variada de 600 a 1200. Esta antena alcanzo una directividad de solo -8.8 dB. Un segundo diseño es presentado con un sustrato de grosor igual a 0.800 mm; esta antena presentó dos frecuencias de resonancia cerca de 30 GHz; una con sintonización de 1.27%, y la segunda con sintonisibilidad 3.31% La directividad de esta antena fue de 0.567 dB y 1.313 dB.en_US
dc.titleCharacterization of asymmetric annular-slot antennas and design of a tunable asymmetric annular-slot antenna with ferroelectric materialen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2006 Antonio Amador-Pérezen_US
dc.contributor.committeeColom-Ustariz, José
dc.contributor.committeeFernández, Félix
dc.contributor.representativeGonzalez-Barreto, David Engineeringen_US
dc.contributor.collegeCollege of Engineeringen_US
dc.contributor.departmentDepartment of Electrical and Computer Engineeringen_US

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  • Theses & Dissertations
    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a graduate degree at UPR-Mayagüez.

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