A dielectric resonator antenna array comprising: a substrate with a first planar surface; a plurality of 1×N linear monolithic subarrays disposed on the first planar surface of the substrate to provide an MxN two-dimensional array; wherein each of the 1×N linear monolithic subarrays comprises: a plurality of dielectric resonator bodies (2020, 2120) disposed on the first planar surface of the substrate to form the respective 1×N linear monolithic subarray, wherein each of the resonator bodies (2020, 2120) is spaced apart from each other, and wherein each of the resonator bodies (2020, 2120) of the respective 1×N linear monolithic subarray is connected to at least one other of the resonator bodies of the respective 1×N linear monolithic subarray via a respective wall structure; wherein the 1×N linear monolithic subarrays are formed as separate monolithic structures; the dielectric resonator antenna array further comprising: a plurality of coupling structures, each of the coupling structures operatively coupled to a respective one of the resonator bodies to provide an excitation signal thereto; and a signal distribution structure operatively coupled to the plurality of coupling structures to provide the excitation signal thereto. a substrate with a first planar surface; a plurality of 1×N linear monolithic subarrays disposed on the first planar surface of the substrate to provide an MxN two-dimensional array; wherein each of the 1×N linear monolithic subarrays comprises: a plurality of dielectric resonator bodies (2020, 2120) disposed on the first planar surface of the substrate to form the respective 1×N linear monolithic subarray, wherein each of the resonator bodies (2020, 2120) is spaced apart from each other, and wherein each of the resonator bodies (2020, 2120) of the respective 1×N linear monolithic subarray is connected to at least one other of the resonator bodies of the respective 1×N linear monolithic subarray via a respective wall structure; wherein the 1×N linear monolithic subarrays are formed as separate monolithic structures; a plurality of dielectric resonator bodies (2020, 2120) disposed on the first planar surface of the substrate to form the respective 1×N linear monolithic subarray, wherein each of the resonator bodies (2020, 2120) is spaced apart from each other, and wherein each of the resonator bodies (2020, 2120) of the respective 1×N linear monolithic subarray is connected to at least one other of the resonator bodies of the respective 1×N linear monolithic subarray via a respective wall structure; wherein the 1×N linear monolithic subarrays are formed as separate monolithic structures; the dielectric resonator antenna array further comprising: a plurality of coupling structures, each of the coupling structures operatively coupled to a respective one of the resonator bodies to provide an excitation signal thereto; and a signal distribution structure operatively coupled to the plurality of coupling structures to provide the excitation signal thereto. a plurality of coupling structures, each of the coupling structures operatively coupled to a respective one of the resonator bodies to provide an excitation signal thereto; and a signal distribution structure operatively coupled to the plurality of coupling structures to provide the excitation signal thereto.