Modeling active response in a leady wave antenna

A leaky-wave antenna (LWA) is a passive acoustic metamaterial comprised of an array of unit cells. The array acts as a beam-steering device in which the output radiation direction is dependent on the input frequency. The passive LWA only functions in a frequency range set by the dimensions and material properties of the array. In order to control the frequency range for a constant or slow changing input, tunable material properties can be introduced. If the input signal changes often or rapidly over time, then active properties with quick responses to inputs are used instead. Presented is a technique for modeling LWA in the time-domain with active elements. The model is used to explore the transient and steady-state of both the unit-cell and full system outputs of the system.