X/Ka-band dual frequency horn design

The Deep Space Network has a need for a dual frequency horn for simultaneous dual frequency operation in a beam waveguide antenna. The dual frequency horn will receive X-band (8.4-8.5 GHz), KABLE frequency (33.6-33.8 GHz), and DSN Ka-band downlink (31.8-32.3 GHz) signals simultaneously. The horn is designed to receive circularly polarized waves. Low loss (noise) in the dual frequency horn is a prime consideration since the horn is employed in the reception of signals from deep space. >