A 3D-printed encapsulated dual wide-band dielectric resonator antenna with beam switching capability

摘要: This paper presents the concept of encapsulated dielectric resonator antennas (E-DRAs). In E-DRAs, smaller-sized DRAs with a specific permittivity is embedded inside a larger DRA with a lower permittivity allowing for simultaneous efficient radiation at two widely separated and widely covered frequency bands. In this work, the proposed E-DRAs cover both the sub-6-GHz band (with a large size DRA) and mm-wave band (with smaller sized DRAs) for 5G and beyond applications. The proposed design of the dual wide-band E-DRAs is fabricated using the fused filament fabrication (FFF) 3D printing process. At mm-wave bands, small cylindrical DRAs (cDRAs) are the radiating elements, and a larger cDRA in conjunction with a dielectric lens (DL) is used to achieve high gain radiation at such high bands. An array of 5 elements is used in a switched mode fashion to add switching beam capability to the antenna at the …