Installation Manual

THALES Communications
OIM
AHV1600-SYSTEM
Page 122
July 16/09
C. FUNCTIONAL CHARACTERISTICS
– Operating frequency band: 4.2 GHz – 4.4 GHz.
– Match:

The return loss on 50 ohms complies with the following diagram
 Isotropic gain:

≥ 7 dBi from 4.2 GHz to 4.4 GHz
 Radiation pattern:
Half-power beamwidth (- 3 dB):

Roll (E-Plane) : 60°  7°

Pitch (H-Plane) : 50°

5°
NOTE:
The E-plane is perpendicular to the direction of the straight line painted on the external antenna
front face.
The H-plane is parallel to the direction of the straight line.
– Decoupling:

The decoupling value for a distance of 0.4 m between antenna centres is ≥ 72 dB.
– Grounding:

The resistance between connector core and its shielding is < 0.05 ohm.
5. COAXIAL CABLES LENGHT
(1) RECOMMENDED CABLE TYPE ( ACCORDING TO MIL.C 17F SPECIFICATION )
Double screened coaxial is essential to avoid RF leakage.