ORBIT FR Biconic antennas User Manual
REFERENCE ANTENNAS
>
Biconic
Typical 3D radiation pattern
SB 130-A
REFERENCE ANTENNAS
> Main use:
• Wideband gain reference
Effi ciency reference
•
•
Chamber refl ectivity evaluation: directivity,
cross polarization and radiation pattern
• Measurement accuracy evaluation
> Delivered documents:
• Typical performance data (TYMEDATM)
•
Measured return loss data
> Surface treatment:
• Alodine 1200 according to MIL-C 5541E class 3
• Blue paint
> Related services:
• Calibration and maintenance
•
Customization
➊ TECHNICAL PERFORMANCE
• Wideband
• Low loss and high effi ciency
• Azimuth pattern symmetry due to entirely
symmetrical design
➋ DESIGN
• Lightweight for easy handling
➌ REPEATABILITY
• Stiff and robust mechanical design
• Precision machined
• High reliability connector
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Electrical characteristics
Part number SB 75 SB 130-A
Type of antenna Biconic Biconic
Frequency range 75 – 230 MHz 130 – 400 MHz
Gain variation
over azimuth ± 0.1 dB ± 0.1 dB
VSWR < 1.9 < 1.9:1 [130-350] MHz
< 2.3:1 [350-400] MHz
Return loss < -10 dB < -10 dB [130-350] MHz
< -8 dB [350-400] MHz
Impedance 50 Ohms 50 Ohms
Peak directivity 1.3 – 1.9 dBi 1.3 – 1.9 dBi
Effi ciency > 92% > 92%
Typical elevation pattern at 140 MHz
Mechanical characteristics
Part number SB 75 SB 130-A
Dimensions
L 1658 mm 829 mm
W 984 mm 492 mm
H 984 mm 492 mm
D 1080 mm 540 mm
E 166 mm 88 mm
Weight (approx) < 15 Kg 6.8 Kg
Connector N Female
Treatment Alodine 1200
(1)
(2)
Color Blue Blue
(1) SPINNER ref # BN058739 and BN133670
(2) Equivalent to MIL-C 5541E class 3
Mechanical drawing
“L”
“w”= “H”
N Female
Alodine 1200
Typical elevation pattern at 260 MHz
(1)
(2)
Typical elevation pattern at 400 MHz
> Measurement antennas
“E”
“D”
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