This collection is exclusively made up of theses, dissertations, and project reports submitted as a requirement for completing a graduate degree at UPR-Mayagüez.
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Browsing Theses & Dissertations by Author "Abad Lima, Rita Jakelyn"
Abad Lima, Rita Jakelyn; Rodríguez Solís, Rafael A.; College of Engineering; Rodríguez, Domingo; Hunt, Shawn D.; Medina Sanchez, Rafael H.; Department of Electrical and Computer Engineering; Barrios Rosales, Roxana M.
In this thesis, the characterization of the Small-Phased-Array-Fed Discrete Lens Array (SPAF-DLA) was developed, for the purpose of analyzing an alternative architecture to improve antenna array technology. SPAF-DLA is composed of a small phased array (as feeder) and a discrete lens array (as aperture lens). The purpose of the characterization is to determine the quality of the radiation pattern; the following parameters will be examined: the gain (G), the minimum side lobe level (SLL), the narrowest possible halfpower beamwidth (HPBW), the scanning range (SR), and the power distribution in the SPAF. In order to obtain an optimum power distribution, the phase and amplitude in the feeder (i.e. SPAF) was calculated for a given radiation pattern, through of an algorithm optimization. In additional, two synthesis methods were developed and analyzed for the characterization of the SPAF-DLA. As a result, the comparison of 1-D SPAF-DLA’s performance with respect to a PHA and a passive DLA (feeders on its focal arc) to compute the cost effectiveness of each structure, with respect to its construction and operating power.