The NTL AJ-1A from NTLAB is a single band antenna array for anti-jamming GNSS receivers. It has four antenna elements and provides high interference rejection. The antenna array can protect L1-based navigation receivers from intentional jamming and accidental interference and provides simultaneous anti-jamming protection in three directions. It provides a gain of 24 dB and an isolation of more than 27 dB between antenna elements. The NTL AJ-1A requires a DC supply from 3.3 to 5 V and draws 36 mA of current. It is available in an enclosure that measures 227 (Dia.) x 37 (H) mm with SMA-male connectors.
