Design of superdirective and compact antenna array

Abstract

In this paper we propose the design of a superdirective and compact antenna array. This antenna system is based on a capacitively loaded loop (CLL) driven by an electrically small monopole antenna. This elementary antenna is then used in a two elements compact parasitic array, in order to achieve a higher directivity. The two elements of this array are identical, but only one of them is driven, the other one is used as a parasitic element. The design of the elementary antenna, its simulated radiation performance are reported, as well as those of the parasitic array. A 7.20 dB maximum total directivity is achieved for this antenna array.