http://rid.unrn.edu.ar:8080/handle/20.500.12049/189 Tue, 07 Apr 2026 02:56:05 GMT 2026-04-07T02:56:05Z http://rid.unrn.edu.ar:8080/handle/20.500.12049/13731 Título: Desarrollo de una antena de doble polarización y gran ancho de banda. Autor(es): Pedre, Germán Pablo Abstract: This Final Integrative Project addresses the study, design, implementation, and characterization of a dual-polarization antenna prototype—or sensor—conceived for integration into an array with applications in S-band weather radars, particularly in the 2.7 to 3.1 GHz frequency range. The main objective of this array is to offer an alternative to traditional systems that use mechanical movement to orient the main radiation beam, proposing instead a solution that allows electronic pointing without the need to physically move the elements. The project's development has been structured in interrelated stages. It began with the study of different types of antennas in order to establish a solid conceptual basis from which to approach the design. This stage proved fundamental in selecting those that met the requirements of this work. Starting from a simple initial model, the design evolved progressively through simulations, incorporating improvements that allowed for achieving a configuration compatible with the stated goals. During this process, the observed behaviors were documented to consolidate a design criterion that could be adapted to different needs. Once a configuration that showed satisfactory performance in the simulations was obtained, the implementation stage began. This consisted of manufacturing the prototype using tools and resources available at the Bariloche Atomic Center. This phase not only included machining the antenna using a milling machine, but also complementary tasks such as the manual installation of the connectors, the adjustment of the reflector plane, and the final verification of the assembly, ensuring the correct implementation of the developed design. Finally, the antenna was experimentally characterized in the semi-anechoic chamber of the National University of Río Negro, obtaining measurements that allow for the evaluation of its performance and comparison with the theoretical results. These observations are documented in this report. Fri, 24 Oct 2025 00:00:00 GMT http://rid.unrn.edu.ar:8080/handle/20.500.12049/13731 2025-10-24T00:00:00Z http://rid.unrn.edu.ar:8080/handle/20.500.12049/13406 Título: Desarrollo de un modulador PSK para transmisión de telemetría satelital. Autor(es): Llanes Reyes, Ivette Abstract: Low-order digital modulations are the first choice in applications associated with satellite telemetry transmission. This preference stems from the ability of these schemes to provide link robustness, which is required to guarantee the controllability of the flight segment from the ground station. Furthermore, given the nature of the application, SWaP-C criteria also play a highly relevant role in the design of the systems that must implement these functionalities, which is even more important in the small satellite segment. The use of FPGAs is presented as an alternative to traditional digital systems, ensuring compliance with these criteria by resulting in less expensive, lighter, smaller, and lower-power solutions. Furthermore, this technology allows for implementation changes without requiring hardware modifications, which represents a significant advantage in terms of flexibility and adaptability for satellites once they have been launched into orbit. This work develops a configurable, FPGA-based digital PSK modulator for TT&C applications in satellite communications. In addition to the modulators, the design includes several auxiliary blocks typically used in this type of application, dedicated to data conditioning and formatting. These include randomization, convolutional coding, timing mark introduction, and storage structures. The data to be modulated, as well as some configuration parameters, are introduced into the design through standard AMBA, AHB, and APB interfaces, allowing easy integration of the modulator into more complex designs. Testbenches are implemented for the different modulation system configurations, allowing simulations to be run to verify their correct operation. In the analog field, LTSpice is used to perform circuit simulations that generate in-phase and quadrature signals from the modulated signals. These are used to obtain the constellation and vector diagrams for each of the modulations, thus providing another alternative for checking the operation of the modulators. Fri, 21 Apr 2023 00:00:00 GMT http://rid.unrn.edu.ar:8080/handle/20.500.12049/13406 2023-04-21T00:00:00Z http://rid.unrn.edu.ar:8080/handle/20.500.12049/13405 Título: Implementación de estaciones receptoras para el monitoreo del movimiento animal, Autor(es): Garcés, Gabriel Iván Abstract: Wildlife faces increasing challenges due to the expansion of human activities, habitat fragmentation, and climate change. These pressures have generated an urgent need for accurate and accessible tools for species monitoring, particularly in remote or difficult-to-access areas. In this context, tracking systems have become a key tool for studying the behavior, movements, and migration patterns of a wide variety of species. The ATLAS system has emerged as an alternative to exploring these challenging environments. This wildlife tracking system uses radio frequency technology to obtain real-time animal locations through the use of lightweight transmitters and a network of receiving stations. One of the main advantages of ATLAS is its potential ability to operate in areas where GNSS signals are undetectable or lack the precision necessary for detailed studies of animal behavior. Fri, 06 Dec 2024 00:00:00 GMT http://rid.unrn.edu.ar:8080/handle/20.500.12049/13405 2024-12-06T00:00:00Z