MODEL AT1000 ANTENNA 150 - 1000 MHz 160 School House Road, Souderton, PA 18964-9990 USA Phone 215-723-8181*FAX 215-723-5688 The Model AT1000 is a wide band, high-gain, log periodic antenna with gain capabilities of 7.5 dB over isotropic (average) and gain flatness of 1 dB. The Model AT1000 supplies the constant, high-intensity fields necessary for RFI/EMI field testing within and beyond the confines of a shielded room. It can also be used as a receiving antenna for RF emissions testing. The Model AT1000 is compact and lightweight for ready mobility, yet is built tough for the extra demands of outdoor use and easily mounts on a flat surface or tripod. SPECIFICATIONS MODEL AT1000 FREQUENCY RANGE................................................................................. 150 - 1000 MHz POWER INPUT (maximum)........................................................................ See Graph POWER GAIN (over isotropic) ................................................................... 6.5 dB minimum 7.5 dB average GAIN FLATNESS ......................................................................................... 1.0 dB IMPEDANCE................................................................................................ 50 ohms nominal VSWR Maximum............................................................................................ 1.8:1 Average............................................................................................... 1.5:1 BEAM WIDTH (average) E Plane ............................................................................................... 60 H Plane............................................................................................... 105 FRONT TO BACK RATIO (minimum)........................................................ 15 dB CONNECTOR............................................................................................... Type N female (quick change) standard; Type C female supplied (for operation at full rated input power) SIZE (WxHxD )............................................................................................. 102.0 x 13.0 x 91.0 cm 40.0 x 5.1 x 36.0 in WEIGHT........................................................................................................ 7.0 kg (15 lb) MOUNTING PROVISIONS ......................................................................... Wall bracket included. May also be tripod mounted in two perpendicular planes using optional tripod. REV030100 POWER VS. FREQUENCY 3.5 POWER (KILOWATTS CW) 3 2.5 2 C CONN 1.5 N CONN 1 0.5 100 200 300 400 500 600 700 800 900 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 non-anechoic testing environments. 1000