In this work, a 16 x 4 quadrature polarized horn array was designed for satellite communication. This array has 12.5 GHz and 14.25 GHz bands, each band has 500 MHz bandwidth.
This array and its feeding network were designed with CST Microwave Studio. Some parts of this design can be found on my GitHub page.
Fig. 1. Front view of the array
Fig. 2. Side view of the array