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3.7m antenna Description


Our 3.7m Tx/Rx antenna is made of shaped parabolic and dual shaped shifted focal axis reflector which can provide high gain, exceptional pattern, low VSWR and sidelobe.  It has C-band and Ku-band frequency as option. And it has high accurate stretch-formed aluminum panels which is fastened with rings and ribs on the precise mould. This kind of reflector makes antenna simple and stable, easy to assemble. Besides, the dual shaped shifted focal axis reflector is designed depending on the requirements of INTELSAT IESS and CCIR Rec.580-4, INMARSAT, ASIASAT, APT and CHINASAT, etc.

3.7m antenna Features


Optional feed system, linear or circular polarization

Supporting available customer service

Self-aligning, Stretch-formed aluminum reflector panel

Antenna structure is reliable and surface is well in anti-rust

Fixed or motorizable pedestals

Superior electrical performance

Offer optional frequency, C-band and ku-band

Structural steel is dealt with hot-dip galvanized craft

3.7m antenna Technical specifications


3.7m antenna ELECTRICAL SPECIFICATION

Diameter

3.7M

Operating Frequency, GHz

C-Band

Ku-Band

Receive

Transmit

Receive

Transmit

3.6254.2

5.856.425

10.9512.75

14.014.5

Gain, Mid-band, dBi

41.94

45.52

51.7

52.63

Antenna Noise Temperature, 2-port feed

10° Elevation

20° Elevation

40° Elevation


36°K

30°K

25°K



50°K

44°K

38°K


Tx. Power Capability, KW


5


2

Polarization

Linear/ Circular

Linear

XPD (on Axis), dB

35

33

1.25

35

33

1.25

35

33

1.25

35

33

1.25

XPD across 1Db Beam Width, dB

VSWR

-3dB Beam Width

1.31°

0.87°

0.42°

0.38°

Feed Insertion Loss, dB

0.2

0.2

0.25

0.25

Isolation, Tx to Rx, dB

85

Feed Interface

CPR-229G

CPR-137G

WR-75

WR-75

Radiation Pattern:First Sidelobe

CCIR.580-4


3.7m antenna ENVIRONMENTAL SPECIFICATION

Operational Wind

72km/h Gusting to97km/h

Survival Wind

200km/h

Temperature

-40°C +60°C

Seismic (Survival)

0.3g (H),0.15g(V)

Solar Radiation

1135Kcal/ h/ m2

Relative Humidity

100%


3.7m antenna MECHANICAL SPECIFICATION

Azimuth

±85° (2 segments)

Elevation

90°(Continuous)

Surface Accuracy (RMS)

≤ 0.35mm

Finishes

 Reflector Surface

 Pedestal & Back Structure


Aluminum panels with high-diffusing white paint

Hot dip Galvanized Zinc


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