ORBIT FR Electric sleeve dipoles User Manual

REFERENCE ANTENNAS
>
Electric Sleeve Dipoles
Typical 3D radiation pattern
REFERENCE ANTENNAS
> Main use:
Gain reference
Effi ciency reference
cross polarization and radiation pattern
> Delivered documents:
Typical performance data (TYMEDATM)
Measured return loss data
> Surface treatment:
Blue paint
> Related certifi cation:
CTIA low gain antenna measurement
> Related services:
Calibration and maintenance
Customization
SD 5650-A
TECHNICAL PERFORMANCE
Low loss and high effi ciency
Azimuth pattern symmetry is within ± 0.1 dB
variation as specifi ed by the CTIA for ripple testing according to the OTA Test Plan
DESIGN
End-fed sleeve dipole technology, minimizing
cable and feed point interaction
Innovative choke design further reduces cable
interaction by attenuating the natural return currents from the dipole
Azimuth pattern symmetry thanks to entirely
symmetrical design
REPEATABILITY
Stiff and robust mechanical design
Minimum use of dielectric material
Precision machined
High reliability connector
> Measurement antennas
15
Electrical characteristics
Connector type & interface
Part number SD
Type of antenna Sleeve dipole
Available frequencies 0.4 - 9 GHz
Gain variation over azimuth <± 0.1 dB
Peak directivity 2.1 dBi (Typ)
Peak gain 1.8 dBi (Typ)
(1)
Effi ciency
VSWR
Return loss
90% (Typ)
(1)
1.2:1
(1)
< -20 dB
Cross polar level < 30 dB
Impedance 50 Ohms
Frequency BW (Ret. Loss < -15 dB) 10% (Typ)
(1) at the labeled center frequency
SD Typical elevation and azimuth radiation pattern
Type 23 PC35-50-0-51/199 UE
Huber+Suhner 31 PC35-50-0-1/199UE
1.6
(.063)
SW 8
(.315 AF.)
1/4-36 UNS-2A
13.3
(.524)
16.8
(.661)
1/4-36 UNS-2A
ø9
(.354 DIA)
1/4-36 UNS-2A
16
“A” = Total length “C” = Connector length “B” = Phase center position “D” = Diameter
1/Low frequency dipole family
Mechanical characteristics
Part number Frequency range [MHz] A mm B mm C mm D mm Connector Type Weight
1
SD 390 380-410 546.8 378.8 8.2 33 PC 3.5 Female
SD 433 410-450 503.7 344.3 8.2 33 PC 3.5 Female1 600 g (approx)
SD 450 435-470 472.1 326.3 8.2 33 PC 3.5 Female1 600 g (approx)
SD 473 450-500 459.8 321.3 8.2 33 PC 3.5 Female1 600 g (approx)
SD 530 500-560 383.8 260.7 8.2 33 PC 3.5 Female1 500 g (approx)
SD 590 560-625 343.2 232.6 8.2 33 PC 3.5 Female1 450 g (approx)
SD 665 625-700 306.6 207.8 8.2 33 PC 3.5 Female1 400 g (approx)
SD 740 690-800 272.2 185.1 8.2 33 PC 3.5 Female1 400 g (approx)
SD 836 810-875 266.7 186.2 8.2 19 PC 3.5 Female1 150 g (approx)
SD 850 820-890 265.8 185.9 8.2 19 PC 3.5 Female1 150 g (approx)
SD 880 850-920 249.8 172.9 8.2 19 PC 3.5 Female1 150 g (approx)
SD 900 865-930 245.2 170.2 8.2 19 PC 3.5 Female1 150 g (approx)
SD 945 910-980 233.5 161.5 8.2 19 PC 3.5 Female1 150 g (approx)
(1) Huber+Suhner type 23 PC35-50-0-51/199UE
700 g (approx)
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