Design of a smooth-walled horn for satellite communication in c-band

Corrugated horn is often preferred due to having low cross polarization over a very wide bandwidth in C-band satellite communication, but the corrugated horn is challenging to fabricate and weight. Therefore, a novel smooth-walled horn is proposed in this paper. The horn has low cross-polarization (<;-33dB)across a total bandwidth ratio of almost 2:1. Then the RF performance between a corrugated horn and a smooth-walled horn is compared. Meanwhile, these two horns are feeding a 2.2×2.6-m-diameter-shaped antenna, and the antenna radiation performance is analyzed, respectively. The results show that the smooth-walled is much simpler and cheaper to manufacture than a corrugated horn. And it has a similar performance to a corrugated horn.