Dielectric inserts providing positional support for components of antenna arrays. An antenna array includes a radiating element configured to receive or transmit an electromagnetic signal and an alignment horn attached to the radiating element, wherein the alignment horn comprises a detent end. The antenna array is such that the radiating element and the alignment horn are manufactured together as a single element by a three-dimensional printing process such that manufacturing the single element does not require a separate joining process for joining separate components.