CRPA & Anti-Jamming

Controlled Reception Pattern Antennas (CRPA) and integrated navigation anti-jamming units that hold GNSS position, velocity and time through deliberate interference.Eight models run from a 50 x 50 mm four-element antenna with a built-in receiver up to a 390 x 390 mm 32-element terminal. Every unit carries the array, the anti-jamming processor and – on the integrated versions – a receiver, so the output is either a protected RF feed for your own receiver or a finished NMEA position and 1PPS timing solution. Suppression ranges from 95 dB on a single jammer to 120 dB with 32 elements nulling; two-band versions add L5 for ionospheric correction and band redundancy.How to choose a CRPAArray size sets the jammer count – four elements handle 1-3 jammers, eight elements 7, sixteen elements 15. Pick the number of simultaneous threats you must survive, not the dB figure alone.Single-band versus L5 – B1/L1/E1 covers most platforms; add L5 when you need ionospheric correction, dual-band robustness or continued operation with one band jammed.Integrated receiver or RF-only – the integrated units output NMEA and 1PPS directly; RF-only feeds your existing receiver at -55 to -70 dBm into 50 ohm.Footprint and heat – the 16-element and dual-array models ship with an optional heat sink; allow 26-59 mm of height and 35-70 W of dissipation.Power and interface – DC 9-36 V on the small units, 24-36 V on the X300D; J30J connectors with RS422 or LVTTL 3.3 V serial.Product lines in this categoryFour-element CRPA – AJU-4050 (50 mm), AJU-4065 (65 mm): 95-100 dB single-jammer, 120-200 g.Dual four-element CRPA – AJU-4100D: 100 mm, L5 included, 105 dB.Eight-element CRPA – AJU-8130 (130 mm, 110 dB, 7 jammers), AJU-8160D (160 mm, L5, heat-sink option).Sixteen-element CRPA – AJU-X200 (200 mm, 15 jammers), AJU-X300D (300 mm, L5, 70 W).Send the platform, the number and type of jammers you expect, the available antenna area and the interfaces you need, and we will return a matched configuration within 24 hours.