Broadband multiple layer dielectric resonator antenna and array thereof

A dielectric resonator antenna, DRA, comprising:

• an electrically conductive ground structure;
• a plurality of volumes of dielectric materials disposed on the ground structure comprising N volumes, N being an integer equal to or greater than 3, disposed to form successive and sequential layered volumes Vi, i being an integer from 1 to N, wherein volume V1 forms an innermost first volume, wherein a successive volume Vi+1 forms a layered shell disposed over and at least partially embedding volume Vi, wherein volume VN at least partially embeds all volumes V1 to VN−1;
• a signal feed disposed and structured to be electromagnetically coupled to one or more of the plurality of volumes of dielectric materials;
• wherein adjacent ones of the plurality of volumes of dielectric materials have different dielectric constants with respect to each other;
• wherein each volume V2 to VN−1 comprises a dielectric material other than air;
• and
• wherein at least volume V1 has a cross sectional shape as observed in an elevation view with an overall height that is greater than half its respective overall width.