160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL AT1000
ANTENNA
150 - 1000 MHz
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
0.5
1
1.5
2
2.5
3
3.5
POWER (KILOWATTS CW)
100 200 300 400 500 600 700 800 900 1000
FREQUENCY (MHz)
POWER VS. FREQUENCY
C CONN
N CONN
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.
