160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL AT4001A
M1
ANTENNA
400-1000 MHz
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
0
1
2
3
4
5
6
7
POWER (KILOWATTS CW)
FREQUENCY (MHz)
AT4001AM1
AT4001A
POWER VS. FREQUENCY
200 300 400 500 600 700 800 900 1000
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.
