Korean VLBI Network (KVN)

Quasi-Optics

KVN has the unique capability to observe four frequency bands simultaneously. KVN quasi-optics are designed to enable this multi-frequency observation. Following figures shows the layout of quasi-optics and receivers viewing from sub-reflector side. The quasi-optics system splits one signal from sub-reflector into four using three dichroic low-pass filters marked as LPF1, LPF2 and LPF3 in the figure. The splitted signals into four different frequency bands are guided to corresponding receivers.

quasi optics

KASI logo image

Korean VLBI Network (KVN)