Radiador interferente a frecuencia WLAN

Abstract

Applications of microwave radar, imaging, security and communication technology require cost-effective implementation of intelligent electronic control antenna systems. In this paper, an original low cost radiator system at Wireless-LAN frequencies has been carried out. This system is capable not only of steering the radiating data signal, but also to radiate noise signals in any other direction with a minimum at the appointment of interest. The up converter electronic control system is based in two PHEMT active mixers to supply the antenna array. The antenna consists of three patches exciting by slot. The external radiators are exciting in phase opposite for obtaining the radiation pattern at the interest direction and the internal one is exciting in phase giving a null at the same direction and noise at the rest. Experimental characterization has shown a good behavior.