Wideband Wide Scan Unit-Cell of a Connected Slot Array for SatCom Applications

This work introduces an improved wideband unit-cell for a connected slot array backed by a ground plane and loaded with artificial dielectric layers (ADLs). The unit-cell design includes a detailed feeding system for a single linear polarization with an integrated coaxial transition. Three capacitive elements are introduced in the design to reach a flat frequency response of the active impedance for a wideband behavior. The entire unit-cell design achieves an active voltage standing wave ratio (VSWR) below 3 over a 7.3:1 bandwidth, within a large field of view of 60° in elevation along the E- and D-planes.