Atec ATH1G18 User Manual

Model ATH1G18

Antenna

1 GHz–18GHz

The Model ATH1G18 is a wide band, high gain, microwave horn antenna that provides a minimum gain of
7dB over isotropic over the frequency range 1GHz to 18GHz. The Model ATH1G18 supplies the constant high
intensity fields necessary for RFI/EMI field testing within and beyond the confines of a shielded room. The
Model ATH1G18 is also designed to perform emissions measurements. The Model ATH1G18 is compact and
light weight for ready mobility, yet is built tough enough for the extra demands of outdoor use and easily
mounts on a tripod. The Model ATH1G18 provides the 1-18GHz response required for many often-used test
specifications.

FREQUENCY RANGE .................................................... 1-18GHz

POWER INPUT (maximum) ............................................ 300 Watts CW up to 7 GHz

Above 7GHz, derate linearly to 175 watts

POWER GAIN (over isotropic) ........................................ See Curve

IMPEDANCE ................................................................. 50 ohms nominal

VSWR

Typical ................................................................... 2:1

BEAM WIDTH (average)

E Plane .................................................................. See Curve

H Plane ................................................................. See Curve

FRONT TO BACK RATIO (minimum) .............................. 20 dB

CONNECTOR .............................................................. N(F) Precision

MOUNTING PROVISIONS ............................................. May be tripod mounted with or without tripod mount.

WEIGHT ....................................................................... 1.57 kg (3.45 lbs)

SIZE (WxHxD) ................................................................ 24.1 x 16 x 20.4 cm (9.48 x 6.29 x 8.03 in)

SPECIFICATIONS

at 18 GHz (See graph)

061109

160 School House Road Souderton, PA 18964-9990 • 215-723-8181 • www.ar-worldwide.com Page 1 of 3

ATH1G18 GAIN

16

14

12

10

8

GAIN (dBi)

6

4

2

0

700 1000 1750 3000 4500 6000 7500 9000 10500 12000 13500 15000 16500 18000

FREQUENCY (MHz)

ATH1G18 3dB BEAMWIDTH

70

60

50

40

Degrees

30

20

10

0

0

.

0

2.0

0

.

4

6.0

.0

8

0

0.

1

12.0

0

4.

1

16.0

18.0

Frequenc y (GHz)

H-Plane (Degrees) E-Plane (Degrees)

Page 2 of 3