ORBIT FR Dual polarized probes User Manual
MEASUREMENT PROBES
>
Dual Polarized Probes
Typical 3D pattern
SP 2600
SP 800
MEASUREMENT PROBES
> Main use:
• Spherical and planar near-fi eld measurement probes
• Measurement probes for far-fi eld systems
> Delivered documents:
• Typical performance data (TYMEDATM)
• Return loss data and port-to-port coupling
> Surface treatment:
• Alodine 1200 according to MIL-C 5541 E class 3
• Blue paint
> Optional equipment:
• Custom mechanical interface
• Absorder plates
> Related services:
• Calibration, maintenance, customization
➊ TECHNICAL PERFORMANCE
• Pattern shape
• On-axis polarization purity
• Off-axis polarization purity
• Low return loss / VSWR
• Port-to-port isolation
➋ DESIGN
• Consists of an orthomode junction (OMJ) feeding
a circular, open-ended or corrugated aperture
• OMJ based on a quad-ridge circular waveguide
with external feeding circuits
• OMJ feeds directly into a circular waveguide
providing wideband performance
• Electrical symmetry for mono-mode excitation
enforced by balanced feeding on a 1:3
bandwidth
➌ REPEATABILITY
• Stiff and robust mechanical design
• Precision machined
• High reliability connectors
• High reliability of external components
> Measurement antennas
47
Standard probes
Electrical characteristics
Part number SP 800 SP 2600 SP 6000 SP 18000
Type of antenna dual probe dual probe dual probe dual probe
Frequency BW 0.8 – 3 GHz 2.6 – 8.2 GHz 6 – 20 GHz 18 – 40 GHz
Return loss < -10 dB < -10 dB < -10 dB < -10 dB
VSWR < 1.9 < 1.9 < 1.9 < 1.9
Polarization Dual Linear H & V Dual Linear H & V Dual Linear H & V Dual Linear H & V
Antenna gain > 8 dBi > 8 dBi > 7 dBi > 8 dBi
On-axis XPD > 45 dB > 45 dB > 45 dB > 45 dB
Impedance 50 Ohms 50 Ohms 50 Ohms 50 Ohms
Port-to-port isolation > 45 dB > 45 dB > 45 dB > 45 dB
Polarization orientation < 0.6° < 0.6° < 0.6° < 0.6°
Channel imbalance < 0.5 dB < 0.5 dB < 0.5 dB < 0.5 dB
(1)
Antenna losses
(1) Antenna Losses: Directivity – IEEE gain
SP 800 directivity pattern at 2 GHz SP 6000 directivity pattern cuts at 12 GHz
< 1 dB < 1 dB < 1.5 dB < 2 dB
48
Mechanical characteristics
Part number SP 800 SP 2600 SP 6000 SP 18000
Length (L) < 800 mm < 500 mm < 365 mm < 235 mm
Radiating aperture diameter (D) 280 mm 120 mm 50 mm 17 mm
Weight < 5 Kg < 2.5 Kg < 2 Kg < 1.9 Kg
Interface Standard 110 Standard 110 Standard 110 Standard 110
Connectors PC 3.5 Female K Female
(1) SWMI type 1032-10SF
Mechanical drawing
“L”
“D”
(1)
K Female
(1)
K Female
(1)
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