Antenna Modeling Technique for Digital Communication Systems

This paper demonstrates the characterization and modeling of an antenna to predict its effect when used in a digital communication system. The technique was applied to a commercial dual-band antenna. An equivalent circuit model was derived to characterize the antenna behavior in the frequency domain. A time domain system model was also derived to enable the estimation of the antenna effects in a digital system. The results show that the antenna caused symbol scattering and contributed to the error vector magnitude.