Electronically switchable-beam reflectarray antenna

This contribution presents the design of a two-beam electronically switchable reflectarray antenna based on patches aperture-coupled to delay lines. The antenna switches the beam from −5 degrees to +5 degrees in the switching plane and works in the 10 GHz band. The phase-shift control is performed using a SPST switch implemented with a series PIN diode. The number of diodes, as well as their associated biasing lines has been reduced to a half by using the concept of gathered elements for reflectarrays. The final breadoboard mask for the phase-shifter layer is also shown.