Model:ATSK-450CST or ATSK-450KST
4.5M VSAT Antenna, which uses a shaped parabolic reflector, provides high gain and exceptional pattern characteristics as well as low VSWR. The 4.5m antenna panels are made of stretch-formed aluminum sheet and riveted on the precise mould; such structure has the characteristics of higher accuracy and strong rigidity. The 4.5m dish reflector is supported by a galvanized steel fixed or motorizable pedestal that provides the required stiffness for pointing and tracking accuracy, and it can be installed on the ground or rooftop. Antesky is a professional vsat antenna manufacturer. Antesky 4.5m earth station antenna systems are available for a wide range of applications including wireless telecommunication service providers, internet service provider, system operators and broadcasters throughout the world.
High Precision Reflectors
Panels are the key components of antenna reflector. Each panel of 4.5m antenna is formed by riveting on the envelope riveting tire after panel skin and reinforcing back structure adopt stretch forming craft. The panel skin is rust-proof aluminum sheet with 2mm thickness. There are two vertical ribs and three circular ribs, whose material is rust-proof angle aluminum. Therefore, each panel after forming has high precision and rigidity
High-strength and Highly Rigid Antenna
According to panels segments, 4.5m antenna has 12 back structures in total. Each back structure and pull rod are made of round steel pipe. One end of back structure is connected with hub, and the other end is connected with panels. Among these, there are position pins to fix at the key connection positions of back structure, panels and hub. This design provides stable support structure for the antenna reflectors, which not only keeps the antenna surface accuracy but also improves the wind and seismic resistance of antenna.
High Anti-Corrosion Performance
All the exposed surface of antenna structure system is protected with coatings. After electrochemical oxidation, aluminum components will be coated with zinc chromate primer firstly, and then with finishing coat. Smaller steel components adopt galvanization treatment, while the bigger steel components adopt surface zinc spraying, and then do primer spraying, finishing coat. Because surface coating is not only for decoration, but also to improve the anti-corrosion ability of metal in harsh environment and prolong the lifetime of antenna. Therefore, once there’s breakage of coating, we should patch that with Acrylic acid polyurethane white semiflat finishing coat timely.
| ELECTRICAL SPECIFICATION | ||||
| Diameter | 4.5M | |||
| Operating Frequency, GHz | C-Band | Ku-Band | ||
| Receive | Transmit | Receive | Transmit | |
| 3.625～4.2 | 5.85～6.425 | 10.95～12.75 | 13.75～14.5 | |
| Gain, Mid-band, dBi | 43.64 | 47.22 | 53.4 | 54.33 |
| Polarization | Linear/ Circular | Linear | ||
| XPD (on Axis), dB for LP | 35 | 35 | 35 | 35 |
| XPD across 1dB Beam Width, dB for LP | 33 | 33 | 33 | 33 |
| Axial Ratio (dB) for CP 2/4 port | 1.30/1.06 | 1.09/1.06 | ||
| VSWR | 1.25:1 | 1.25:1 | 1.25:1 | 1.25:1 |
| Antenna Noise Temperature, 2-port feed10° Elevation | 36°K | 60°K | ||
| -3dB Beam Width | 1.08° | 0.715° | 0.351° | 0.315° |
| Tx. Power Capability, KW | 5 | 2 | ||
| Feed Interface | CPR-229G | CPR-159G/137G | WR-75 | WR-75 |
| Feed Insertion Loss, dB | 0.15 | 0.2 | 0.25 | 0.25 |
| Isolation, Tx to Rx, dB | 85 | |||
| Radiation Pattern:First Sidelobe | CCIR.580-4 | |||
| MECHANICAL SPECIFICATION | ||||
| Antenna Type | Ring Focus Antenna | |||
| Antenna Pedestal Type | Kingpost Pedestal | |||
| FinishesReflector SurfacePedestal & Back Structure | Aluminum panels with high-diffusing white paintHot dipped Galvanized | |||
| Surface Accuracy (RMS) | ≤ 0.5mm | |||
| Azimuth | ±85° | |||
| Elevation | 0°～90° | |||
| Antenna Drive | Manual or Motorized drive | |||
| ENVIRONMENTAL SPECIFICATION | ||||
| Operational Wind | 72km/h Gusting to 97km/h | |||
| Survival Wind | 200km/h | |||
| Temperature | – 40°C ～ + 60°C | |||
| Relative Humidity | 100% | |||
| Solar Radiation | 1135Kcal/ h/ m2 | |||
| Seismic (Survival) | 0.3g (H), 0.15g (V) | |||
Antesky 4.5m VSAT Antenna is a common product with the features of stable structure and prior performance,after using this type of 4.5m C band Antenna, the customer feedback to Antesky that Cross Polarization Isolation is very good and other performances are done well according to the specification.We hope our 4.5m 4.5m C band Antenna will be helpful for more future customers.
On behalf of Antesky in September of the year 2012 Papua New Guinea customer purchased 4.5m VSAT antenna from our company, after installing the antenna, the customer feedback to us that the antenna performs according to the specification we provided, and Cross Polarization Isolation is very good.
| Operation frequency(GHz) | Standard C-band TX:5.85-6.425 RX:3.625-4.2 Extended C-band TX:5.85-6.725 RX:3.4-4.2 Standard X-band TX:7.90-8.40 RX:7.25-7.75 Standard Ku-band TX:14.0-14.5 RX:10.95-12.75 Extended Ku-band TX:13.75-14.5 RX:10.7-12.75 Standard Ka-band TX:29.20-31.0 RX:19.6-21.2 |
|---|---|
| Polarization type | Linear pol. Circular Pol. |
| Antenna type | Prime focus parabolic antenna,dual-reflector shaped Ring-focus antenna |
| Mount Type | Elevation over azimuth pedestal,constructed of galvanized A36 steel |
| Drive mode | Manual strut,motorized drive |
| Control mode | Simple control,frequency control |
| De-icing system | With heating system on 2/3 of 4.5m antenna reflector |
| Foundation type | Fixed foundation,Non-penetrating foundation,Steel structure foundation,Rotary foundation |
4.5M VSAT antenna feed back from Papua New Guinea
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