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1.8m Earth Station Ka Rx/Tx Antenna

1.8m Earth Station Ka Rx/Tx Antenna

Electrical Specifications Mechanical Specifications Environmental Specifications

Technical Parameters

Electrical Specifications

Type

KA-180A

Operating Frequency, GHz

KA-Band

Receive

Transmit

17.721.2

27.131

Gain, Mid-band, dBi

50.7

54.1

Polarization

LHCP/RHCP

XPD(on Axis), dB

35

35

XPD across 1dB Beam Width, dB

30

30

VSWR

1.25:1

1.25:1

Antenna Noise Temperature 2-port feed

10° Elevation

30° Elevation

50° Elevation

 

65K

55K

50K


-3 dB Beam Width, Mid-band

0.54°

0.36°

Typical G/T

≥32dB/K at 20°elevation


Tx. Power Capability, KW


0.5

Feed Interface

WR-42

WR-34

Feed Insertion Loss, dB

≤0.4

≤0.3

Isolation, Tx to Rx, dB

85

First Sidelobe

90% Peaks under Following Envelop

-14

29-25lgθ (1°≤θ≤20°)

Mechanical Specifications

Antenna Diameter

1.8m

Antenna Type

Ring focus

Surface Accuracy(RMS)

≤0.3 mm

Antenna Pointing Range

Azimuth

Elevation

Polarization

360°

90° (Continuous)

±90°(Continuous)

Drive Mode

Manual or Motorized

Motor Drive System

Azimuth Travel Rate

Elevation Travel Rate

0.11° /s ( 0.06° /s)

0.17° /s ( 0.08° /s°)

Environmental Specifications

Operational Wind

79km/h gusting to 97km/h

Survival Wind

200km/h

Temperature

- 20°C + 48°C

Relative Humidity

100

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