Power amplifier based integrated and miniaturized active antenna

In this paper, a power amplifier (PA) integrated active antenna is presented. A new approach to antenna miniaturization is introduced through the direct integration and co-design with the amplifier. The detailed design procedure is presented and the concept is demonstrated with a rectangular patch antenna. The PA and the antenna are co-designed so that optimum performance is achieved. The antenna is miniaturized from its nature resonance frequency 2.95GHz to 2.45GHz which is 31% size reduction. The bandwidth of the antenna is found to be 37MHz and its efficiency is more than 50% when operating between 2.43-2.467GHz. The gain and noise figure of the amplifier are optimized along with the antenna performance as an active integrated antenna (AIA) system and found to be around 8 and 2dB respectively across the operating band.