1.8m S Band LEO Antenna

 Electrical Specification

 Type

 S18T

 Operating Frequency, GHz

 S‐Band

 Transmit

 Receive

 2.025~2.11

 2.2~2.8

 Gain, dBi

 28.6@2.1GHz

 29.7@2.4GHz

 Polarization

 Double circular

 Axial Ratio, dB

 2.0

 VSWR

 1.5

 1.5

 ‐3 dB Beam Width, Mid‐band

 5.6°@2.1GHz

 5°@2.4GHz

 Typical G/T（EL=30°，2‐port）

 5.8dB/K

 Feed Interface

 N‐50K

 N‐50K

 Isolation, Tx to Rx, dB

 80

 Side lobe

 CCIR 580‐4

 Mechanical Specification

 Antenna Diameter

 1.8m

 Antenna Type

 1.8 meters standard

 Mount type

 X‐Y mount antenna

 Tracking mode

 program tracking

 The biggest movement range

 ±90°

 Velocity

 5°/s

 Acceleration

 5°/s2 max

 tracking accuracy

 0.5°

 Environmental Specification

 Operational Wind

 72km/h

 Survival Wind

 202km/h

 Temperature

 ‐20°~+55°

 Relative Humidity

 ≤95%(normal temperature)