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Remote Sensing & Telemetry

7.3m Ka Band Antenna


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  • DESCRIPTION
  • TECHNICAL
  • SPECIFICATIONS

Probecom provides antenna system rangind from 1.8m to 18.5m for satellite measurement and control, used in communication satellites, commercial satellites, scientiific satellites and manned spacecrafts from telecontrol and telemetry system, tracing and monitoring with features of high-efficiency, low sidelobe, wide frequency and monopolse automatic tracking. Probecom also provides feed system in various frequency, includes C band, Ku band, S band, L band, X band, C/X band and so on.


Probecom's Ka band antenna in X/Y pedestal structure is designed for low orbit satellite. It is dual shaped ring-focus antenna, has high accuracy, low weight and high stability. Antenna main reflector is made in corrugated horn feed, antenna pedestal is full motion X/Y type, both axes uses large gear transmission, gives high structural rigidity and pointing accuracy.


Electrical Specification

Type

KA73T

Operating Frequency, GHz

Ka-Band 4 ports

Receive

Transmit

17.7~20.2

27.0~30.0

Gain, dBi

59.8@17.7GHz

63.6@27.5GHz

Polarization

Circular

Axial Ratio, dB

 

0.5

VSWR

1.30

1.30

-3 dB Beam Width, Mid-band

0.16°@17.7GHz

0.11°@27.5GHz

Typical G/TEL=34-port

34.8dB/K (110k LNA)

 

Feed Interface

WR-42

WR-28

Isolation, Tx to Rx, dB

Tx/Tx ,Rx /Rx, Linear , dB

85

20

Side lobe

CCIR 580-4

Mechanical Specification

Antenna Diameter

7.3m

Antenna Type

Cassegrain

Pedestal Type

Az/El pedestal

Antenna Pointing Range

Azimuth

Elevation

±90° (3 sections, 60° each

5°~90°(Continuous)

tracking mode

monopulse auto tracking

tracking accuracy 

                0.02°

Environmental Specification

Operational Wind

61km/h

store upWind

115km/h

Temperature

-30°~+55°

Relative Humidity

100%

Solar Radiation

1135Kcal/h/m²

Operation altitude

3000m above sea

Seismic(Survival)

0.3g(H), 0.15g(V)

Ice Loading

13mm Operational; 30mm Survival

Main Functions:


a)Monopulse tracking system

b)Full motion X/Y pedestal

c)Extreme axis speed and accelerated speed

d)Quick pointing and tracking satellite

e)Up to 10 satellite for automatic pointing

f) Customized specific band



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