Antenna prototypes for indoor and outdoor Wi-Fi communication

The design and fabrication of an individual patch antenna were realized in order to obtain an efficient and economical antenna replacement to routers, which operate at 2.4 GHz. This rectangular microstrip antenna was corner truncated rectangular due to its bigger gain compared with the rectangular one, because of losses reduction. With this antenna the indoor communication was possible, but it was not enough to supply the outdoor one. In order to provide also the outdoor service, antenna arrays were developed, on the base of the corner truncated rectangular antenna, considering traditional configurations such as, a driven patch antenna gap coupled to four patches along the edges as a first approximation. As second one, a driven patch antenna directly coupled to four patches along the edges was analyzed, and finally, a driven patch antenna was coupled considering both types of coupling. The last case constitutes a novel structure, which showed the biggest gain, but, experimentally, also showed a little displacement of the central frequency. The indoor and outdoor Wi-Fi communication was possible with the last two arrays. Their main limitations are their sizes, but they have competitive costs.