Diseño, construcción e implementación de dos sistemas radiantes directivos aplicados a la tecnología SDRADAR.

Abstract

Two types of directive radiant systems were proposed for its design and construction: first, the arrangement of 4x4 micro strip patch type antennas and second, the pyramidal horn antenna, operating each in the 3.7 GHz S-band. For the design of the two radiant systems, the antenna arrangement was made using the CST Studio and for the pyramid horn antenna using the Ansoft HFSS. The construction of the antennas was carried out using the CNC LPKF S103, for the arrangement of antennas with a milling process and the pyramidal horn with cuts of the templates designed for assembly. The tests of the two systems were carried out with the spectrum analyzer at a distance of 4.5m and the vector network analyzer (VNA), to characterize their parameters (dispersion, frequency and radiation pattern). In the antenna array, a dispersion parameter of -34dB was obtained and in the pyramid horn system -24 dB. With the values obtained in the tests carried out on the two systems, the comparison of these was made, taking into account each of their parameters, resulting in the antenna array system offering greater benefits than the pyramid horn. SDRadar was implemented with the NI USRP 2932 card and with each of the systems built at a distance of 3.5 meters, each test performed with three reflective elements from the microwave laboratory. It is concluded that the two systems built have a low economic cost and are suitable for SDRadar systems in the S-band, to be used in investigations in the microwave laboratory. It is recommended prior to the design and construction of antennas to consider the parameters and limitations of each equipment to be used, in addition to the materials and electronic elements available on the market.