New methodology for mixed simulation of active antenna

This paper presents a mixed simulation approach for an active antenna operating at 8.2 GHz. This approach is composed of three main parts which they will be detailed and described with some experimental validation as well. The first part of this approach is an electromagnetic (EM) macromodel for antennas array. The second part is a bilateral behavioral model for power amplifiers (PA). Finally, a mixed simulation approach was elaborated and implemented into a circuit simulator using both developed models. Theoretical and experimental results show the reliability of EM, PA models and the mixed simulation approach as well. The originality of this work is the elimination of isolator between PA and antennas while maintaining a correct radiation pattern despite high antenna impedance mismatches.