Diseño e implementación de una antena Choke Ring Low-Cost para aplicaciones de GNSS.

Abstract

In the Faculty of Computer Science and Electronics, implementations, designs and simulations have been carried out with various types of antennas for various applications. but no work has been recorded using the Choke Ring antenna for GNSS applications, therefore, the present titling work aimed to design and implement a low-cost choke ring antenna for GNSS applications. For this, the fundamental parameters of the antennas, the main characteristics of the GNSS systems, specifically of the GPS constellation, were studied, in addition to studying the operation of a choke ring antenna. An antenna simulation software was used for its design and observation of operation by including monopole antennas at the frequencies of the GPS L band. For its implementation, readily available and inexpensive materials were used. A design with PLA and aluminum foil and another design with PLA and copper adhesive tape were implemented, the performance of the reflector was also evaluated by extracting the radiation pattern from different antennas. In addition, two types of Smartphones were used, one that works at the L1 frequency and another that operates at double frequency within the GPS band (L1 and L5), to perform the tests both in trajectory and in static mode. Through this methodology it was possible to determine that more directive radiation patterns can be obtained. In the case of trajectory tests, it was verified that the design of the low-cost choke ring antenna with copper provides better results and that there are fewer errors in terms of position measurements compared to the one designed with aluminum. In this context, it is concluded that a low-cost choke ring antenna can be obtained using the reflector and smartphones equipped with GNSS receivers, since acceptable positioning accuracy can be achieved despite its low cost.