MODEL AT4001A M1 ANTENNA 400-1000 MHz 160 School House Road, Souderton, PA 18964-9990 USA Phone 215-723-8181*FAX 215-723-5688 The Model AT4001A is a high gain horn antenna specially designed for use in RF Susceptibility Testing. Its high gain characteristics permit achievement of higher electric fields per watt of input power. Exhibiting generally increasing gain with increasing frequency, the AT4001A helps compensate for losses that occur elsewhere in an RF test system at high frequencies. The Model AT4001A is intended for use with the 2000W1000 and other high power amplifiers. SPECIFICATIONS MODEL AT4001A FREQUENCY RANGE................................................................................. 400 - 1000 MHz POWER INPUT ........................................................................................... See Graph POWER GAIN............................................................................................... 10dB minimum typically increasing to 15dB at 1000MHz IMPEDANCE................................................................................................ 50 ohms nominal VSWR ............................................................................................................ 2.5:1 maximum 1.5:1 average BEAM WIDTH (front to back)..................................................................... typical curves available on request CONNECTOR............................................................................................... Quick change block See Model Configuration MOUNTING PROVISIONS ......................................................................... Rear flange for wall mount Pads with 1/4 - 20 thread for tripod mount WEIGHT........................................................................................................ 9.1 kg (20 lbs.) SIZE (WxHxD )............................................................................................. 56.4 x 79.3 x 73.7 cm 22.2 x 31.2 x 29.0 in MODEL CONFIGURATIONS MODEL NUMBER CONNECTOR POWER INPUT AT4001A 1 5/8 EIA flange 3000 watts max (See Graph) AT4001AM1 7-16 DIN female 2200 watts max (See Graph) REV030500 POWER VS. FREQUENCY 7 POWER (KILOWATTS CW) 6 5 AT4001A 4 AT4001AM1 3 2 1 0 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) Field strengths have been measured in free-space conditions. Individual shielded rooms, amplifiers, and test-system conditions will influence performance. Field strength also varies with frequency and position of antenna and EUT in nonanechoic testing environments.