3.7m C-band earth station antenna

 Description

3.7m C-band earth station antenna

C-band 3.7-Meter antenna (Model C37T) with transmit (Tx) /receive (Rx) 2-port feed in switchable circular /linear polarization can offer superior Tx/Rx
C37T 3.7M antenna reflector incorporates stretch-formed doubly contoured panels with matched radials and hub for ease of field alignment. The standard designed elevation over azimuth pedestal provides a cost-effective solution for high stiffness and stability, full orbital arc coverage and fine drive performance, and ensures the pointing accuracy required for C-band operation.
Key Features
CP/LP switchable feed
Galvanized steel parts
High RF performance
Extended C-band feeds
AC motor drive per Az., El. andPol. axes with single speed
Elevation over azimuth pedestal with jackscrew drive
Different frequency ranges from many feed configurations
Type approval from Intelsat/Asiasat/APT/Chinasat
Options
Auto-track control system
Hot-dipped galvanized steel parts
Feed blower or deicing with automatic controls
Two or four Tx/Rx port in linear or circular polarized feeds

3.7metres C-band earth station antenna specification
ELECTRICAL SPECIFICATION
Electrical Operating Frequency, GHz  Two-port LP/CP feed
 Receive  Transmit
 3.625-4.200  5.85-6.425
Gain, Mid-band, dBi  42.1  45.3
Antenna Noise Temperature 10° Elevation  37k(in clear sky and soft wind)
Typical G/T at Midband 20° Elevation, Clear Horizon with 35k LNA  23.5dB/k
Pattern Beamwidth at Midband -3dB  1.29°  0.83°
Axial Ratio  1.5dB  0.75dB
Radiation Patterns: First Sidelobe Level:≤-14dB,Meet ITU-RS.580-5 or other requirements
Cross Polarization Isolation for LP     On Axis: 35dB,  Within 1dB beamwidth: 30dB
VSWR  1.25:1  1.25:1
Feed Insertion or Ohmic Loss  0.20dB  0.10dB
Port to Port Isolation(Tx/Rx)   85dB
Feed Interfaces  CPR-229F  CPR-137F
Total Power Handling Capability   3kW  CW

MECHANICAL SPECIFICATION

Azimuth Travel  ±60° (continuously adjustable)
Elevation Travel  5° to 90 °( continuous adjustable)
Polarization Travel  ±90°
Backup Structure  Steel
Pedestal Structure  Steel
Finishes Reflector Surface Pedestal＆Reflector Backup Structure  Aluminum panels with high-diffusing white paint Galvanized steel
Surface Accuracy  0.7mm(R.M.S)

ENVIRONMENTAL SPECIFICATION

Operational Winds  72km/h ;Gusts to 97km/h
Survival Winds  200km/h
Ambient Temperature  Operational:-15° to +50° C Survival: -40° to +60°C
Rain(Operational and Survival)  10cm/h
Relative Humidity(Operational and Survival)  0% to 100% without condensation
Solar Radiation  1000Kcal/ h/ m2
Ice (Survival)  2.5cm radial
Shock and Vibration  As encountered during shipment by commercial air, sea or truck
Corrosive Atmosphere  As encountered in coastal regions and/or heavily industrialized areas
Seismic(Survival)  o.3G’s horizontal 0.1G’s vertical