ORBIT FR Single Linear Feed Horns User Manual
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SATIMO © Antenna Compact feed horns 01.2009
Compact range feed horns
➊ TECHNICAL PERFORMANCES
• Rotationally symmetric radiation pattern
• Low cross polarization
• Stable amplitude taper with frequency
• Optimized refl ector edge and chamber
wall illumination
MEASUREMENT PROBES
> Main use:
• Illumination of compact range refl ectors
• Direct range illumination or fi eld probing
• Illumination of communication refl ector antennas
> Delivered documents:
• Measured VSWR
• Measured radiation pattern main cuts
(0°, 45°, 90° and 135°)
> Surface treatment:
• Anodized
> Related services:
• Calibration, maintenance, customization
(i.e. high gain half octave, dual linear low gain full
octave, dual linear medium gain…)
➋ DESIGN
• High precision mechanical mounting
• Corrugated aperture
Which CR feed horn do you need?
Particularly suited for Main characteristics
Low Gain Compact range with Lower amplitude
short focal length taper, lower weight,
options for full
octave bandwidth,
higher refl ector
edge and wall
illumination, higher
cross-polarization
Medium Gain General purpose Best overall
standard ORBIT/FR performance,
compact range compliant to the
compact range
catalogue specifi cations
High Gain Individual applications Higher amplitude taper,
of antennas smaller lower r efl ector edge
than nominal quiet zone and wall illumination,
size with high sidelobe reduced quiet zone size
accuracy requirements
Measurement antennas
37
Mechanical drawing
SATIMO © Antenna Compact feed horns 01.2009
• Sensoring ring polarization pin
and accurate mounting interface
for repeatable mounting.
• Spirit level for reproductible polarization
reference.
Medium gain
Medium gain feed horns with
dual polarization for more
effi cient range utilization
are available upon request.
Half octave single linear feed horns
The medium gain corrugated horn is the fi rst choice
for general purpose compact ranges. It offers the
best overall performance in regard to amplitude taper,
cross polarization performance, refl ector edge illumination, chamber wall illumination, and feed leakage
into the quiet zone.
The low gain corrugated feed horns offer lower
amplitude taper (typically 0.3 dB over the full quiet zone
versus 0.8 dB for the medium gain horns) at the
cost of slightly degraded other parameter. It is also
frequently used on compact range systems with
shorter focal length, which require an illumination cone
angle of ± 16 deg. Other advantages of the low gain
feeds are lower weight and the availability of a full
octave frequency bandwidth up to 8 GHz.
Part number Frequency Gain Directivity VSWR Taper Cross Nominal 3 dB
range (GHz) (dBi) (Typ) (dBi) (Typ) (dB)
AL 2309-0.75 SL 0.75 - 1.12 13 14 1.6:1 0.8 35° 34 - 40°
AL 2309-1.12 SL 1.12 - 1.70 13 14 1.6:1 0.8 35° 34 - 40°
AL 2309-1.70 SL 1.70 - 2.60 13 14 1.6:1 0.8 37° 34 - 40°
AL 2309-2.00 SL 2.00 - 3.00 13 14 1.6:1 0.8 37° 34 - 40°
AL 2309-2.60 SL 2.60 - 3.95 13 14 1.6:1 0.8 37° 34 - 40°
AL 2309-3.00 SL 3.00 - 4.50 13 14 1.6:1 0.8 37° 34 - 40°
AL 2309-3.95 SL 3.95 - 5.85 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-4.50 SL 4.50 - 6.70 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-5.85 SL 5.85 - 8.20 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-6.70 SL 6.70 - 10.0 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-8.20 SL 8.20 - 12.4 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-10.0 SL 10.0 - 15.0 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-12.4 SL 12.4 - 18.0 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-15.0 SL 15.0 - 22.0 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-18.0 SL 18.0 - 26.5 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-22.0 SL 22.0 - 33.0 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-26.5 SL 26.5 - 40.0 13 14 1.4:1 0.8 40° 34 - 40°
AL 2309-33.0 SL 33.0 - 50.0 13 14 1.4:1 0.8 37° 34 - 40°
AL 2309-40.0 SL 40.0 - 60.0 13 14 1.4:1 0.8 35° 34 - 40°
AL 2309-50.0 SL 50.0 - 75.0 13 14 1.4:1 0.8 35° 34 - 40°
AL 2309-60.0 SL 60.0 - 90.0 13 14 1.4:1 0.8 35° 34 - 40°
AL 2309-75.0 SL 75.0 - 110.0 13 14 1.4:1 0.8 35° 34 - 40°
(1) Cross-polarization applies to the conical angle of +- 8 deg, which illuminates the quiet zone of ORBIT/FR compact ranges.
(1)
polarization
(1)
(Typ) Bandwidth
38
Measurement antennas
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