4.5m C-band earth station antenna

 Description

4.5m C-band earth station antenna

C-band 4.5-Meter antenna (ModelC45T) with transmit (Tx)/receive(Rx)2-port feed in circular/linear polarization can offer superior Tx/Rx
C45T 4.5M 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 feed
Galvanized steel parts
High RF performance
Extended C-band feeds
AC motor drive per Az.,El and Pol.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 withautomatic controls

  4.5metres C-band earth station antenna specification
ELECTRICAL SPECIFICATION
Electrical Frequency in GHz  Two-port LP/CP feed Receive:3.625-4.200 Transmit:5.85-6.425
Antenna Gain at Mid-band dBi  43.6  47.1
Antenna Noise Temperature 20° Elevation  31k(in clear sky and soft wind)
Typical G/T at Midband 20° Elevation, Clear Horizon with 35k LNA  25.4dB/k  
Pattern Beamwidth at Midband -3dB  1.07°  0.69°
Radiation Patterns: First Sidelobe Level:≤-14dB,Meet ITU-RS.580-5 and other requirements
Cross Polarization Isolation for LP     On Axis: 35dB,  Within 1dB beamwidth: 30dB
Axial Ratio  1.5dB  1.0dB
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