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
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Gain
Azimuth
Beamwidth
Vertical
Beamwidth
Antenna Model
[dBi] [deg] [deg]
-3dB 38 18
IBIS-ANT1-H38V18 15
-10dB 70 30
-3dB 29 25
IBIS-ANT2-H29V25 14
-10dB 53 49
-3dB 17 15
IBIS-ANT3-H17V15 19
-10dB 34 45
-3dB 11 10
IBIS-ANT4-H11V10 22
-10dB 23 30
-3dB 12 39
IBIS-ANT5-H12V39 18
-10dB 25 69
-3dB 51 20
IBIS-ANT6-H51V20 18
-10dB 76 59
Tab. 4.2 – Ku band Antennas characteristics
4.2.2 X band system antennas
The X band IBIS-S system is provided with two identical antennas operating in vertical
polarisation and characterised by a maximum gain of 21dBi. The amplitude characteristics
of the antenna main lobe at -3 dB and -10 dB are provided in Tab. 4-3 and its vertical and
horizontal patterns are shown in Fig. 4.13 and Fig. 4.14. For further details see appendix
C.1.1.
X band
antenna
HORIZONTAL
PLANE
VERTICAL
PLANE
-3 dB
15° 15°
-10 dB
27° 25°
Tab. 4-3 – Width of the main lobes of the X band antennas at -3 dB and -10 dB
Fig. 4.13 – X band antenna vertical plane
pattern
Fig. 4.14 – X band antenna 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).