Design of a log periodic strip grating microstrip antenna

The design of a log periodic strip grating antenna is described. The 12-element antenna is compact and has a measured power bandwidth of 22%. The antenna elements are mounted on the top of the top layer of a two-layer structure with its feed line located between the two dielectric layers providing electromagnetic coupling. The structure was analyzed using PMESHD, a moment method code for two-layer passive structures. The analysis and measurements are in good agreement. © 1993 John Wiley & Sons. Inc.