Estudio de la radiación de antenas CRLH leaky wave excitadas por pulsos temporales

Abstract

A new time-domain Green’s function approach is used to characterize a composite right/left handed (CRLH) leakywave structure as a function of time under ultra-short modulated pulse excitation. This analysis is efficiently performed in the far-field region for both, a single CRLH element and for an array. Several novel broadband applications, such as a real-time spectrum analyzer (RTSA) (which exploits the unique frequencyspace mapping conversion of the CRLH) or an instantaneous radar scanning (based on the time-frequency relation of chirpmodulated pulses), are presented and discussed. Full-wave simulations and measurements are provided to validate the results. The semi-analytical formulation developed is compact, flexible and fast, avoiding stability conditions as in other completely numerical time-domain methods.