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Remote Sensing & Telemetry

4.2m Ka Band LEO RXO Antenna


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  • DESCRIPTION
  • TECHNICAL
  • SPECIFICATIONS

PR42X / Y-K model 4.2m antenna is designed for K-band LEO satellite communication. The antenna is in the form of dual shaped Ring-Focus antenna. The main reflector is divided into 12 panels, made with aluminum stretched panel. The feed horn is multi-mode corrugated horn. The feed is optional with TE21 mode mono-pulse auto tracking or program tracking plus step-tracking.


The antenna pedestal is in X / Y type. It is the key performing mechanism to achieve non-blind tracking in zenith. Each axis rotation range is ± 90˚, can cover the entire airspace, effectively avoid coiling and collector ring problem in Az/El structure. This structure is applicable for LEO satellite antenna tracking. The large-size final drive has high structural rigidity ensured the antenna pointing accuracy, tracking accuracy and rotation stability of the overall structure.

he main functions:

a) Have mono-pulse auto tracking, program tracking plus step-tracking, and external data guide tracking modes.

b) Have time offset adjustment and X, Y axis angle adjustment function in program tracking mode.

c) Have angle measurement data acquisition function in auto tracking mode;

d) Can be connected via a network interface or RS-232 serial interface with system monitoring computer, monitors the parameter configuration of antenna system, control and equipment status.

Main specifications:

1) Antenna Type: Dual shaped Ring-Focus antenna

2) Antenna main reflector diameter: 4.2m

3) The main reflector surface accuracy: 0.3mm (RMS)

4) Antenna pedestal: X / Y type

5) Operating frequency: Rx: 20.2~21.2GHz

6) Polarization: circular polarization (LHCP, RHCP simultaneously or switchable)

7) Antenna gain: 56.4dBi@20.2GHz

8) Side-lobe: The first side lobe level-14dB

9) VSWR: 1.3: 1

10) Axial ratio: 1.1

11) System G/T value: 31.4dBK@5゜El

12) Interface type: WR-42

13) Travel range: ± 90 (Azimuth and Elevation)

14) Travel speed: 0.01 to 5 / s

15) Travel acceleration: 5 / s2

16) Pointing accuracy: 0.08

17) Tracking accuracy: mono-pulse auto tracking0.03; program tracking plus step-tracking 0.08

18) Antenna total weight: 1000kg

19) Rated power: 7kw

20) Working wind speed: 17m / s, gusts of 20m / s

21) Survival wind speed: 56 m / s

22) Working temperature: -40 ~ 55

23) Relative humidity: 100%

24) Rainfall: 100 mm / hr

 



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