User's Manual

IDS Ingegneria Dei Sistemi S.p.A. N doc: MN/2009/071 - Rev. 1.1
IBIS-S v. 1.0 - User Manual
Config.: IBIS-S-PRCS-OUT-MN
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IBIS-H20
HORIZONTAL
PLANE
VERTICAL
PLANE
-3 dB
17° 15°
-10 dB
34° 45°
Tab. 4-1 – Width of the main lobes of the IBIS-H20 antennas at -3 dB and -10 dB
Fig. 4.4 – IBIS-H20 vertical plane pattern Fig. 4.5 – IBIS-H20 horizontal plane pattern
The sensor is fitted with two flanges, each with four filleted holes for the installation of
the pair of antennas (see paragraph 5.2).
Fig. 4.6 – IBIS-H20 antenna
If desired as an optional or a substitution, the IBIS-H20 antennas can be replaced by a pair
of three other antennas whose characteristics are reported below:
IBIS-H23 antennas (Type 1) having the following characteristics:
• Maximum gain of 23.5 dBi;
• Horizontal antenna beam width at -3dB: 11deg.
• Vertical antenna beam width at -3dB: 10deg.
IBIS-H15 antennas (Type 3) having the following characteristics:
• Maximum gain of 15 dBi;
• Horizontal antenna beam width at -3dB: 29deg.
V
H