The AST 4.5m (15 ft) antenna delivers exceptional performance for transmit/receive and receive only applications for Ka-band frequencies. This antenna offers a reflector design that incorporates precision-formed panels, truss radials and hub assembly using matched tooling for interchangeable components. It features an innovative Cassegrain or Ring Focus feed and sub-reflector design which results in high gain, low noise temperature, high antenna efficiency and excellent rejection of noise and microwave interference. A large center hub provides spacious accommodation for equipment mounting. The reflector is supported by a galvanized elevation over azimuth kingpost pedestal that provides the required stiffness for pointing and tracking accuracy. The pedestals are designed for full orbital arc coverage and are readily adaptable to ground or rooftop installations.
We also offer custom satellite antenna solutions, please contact us for details.
Feature
* High G/T, excellent pattern characteristics;
* Factory feed system testing;
* All of steel parts to be processed by hot dipped zinc;
* Foundation hardware kit included;
* Air or ocean transport packing;
Options
* Specialized feed systems (e.g extended, multi-band, Ka Band, DBS band);
* Antenna control system with tracking (Step-track, Program Tracking and Inclined Orbit Tracking);
* Reflector and feed deicing systems;
* ODU Support Kits;
* Lightning Rod Kit;
* Grounding Kit;
* Cable-Mounting Kit;
* Turnkey installation and testing;
* Non-penetrating mount;
* High wind configuration;
| ELECTRICAL SPECIFICATION | ||
| Type | FS450-KA | |
| Operating Frequency, GHz | Receive | Transmit |
| Standard Band 18.3~21.2 | Standard Band 29~30 | |
| Custom band 17.70~21.20 | Custom band 27.5~31 | |
| Gain, Mid-band, dBi | 56.7 | 60 |
| Polarization | Linear/Circular | |
| XPD (on Axis), dB | 35 | 35 |
| Axial Ratio (Circular-Polarized) | 1.2 | |
| VSWR | 1.3:1 max | 1.3:1 max |
| Antenna Noise Temperature 10° Elevation 20° Elevation 40° Elevation | 142°K 124°K 112°K | |
| -3dB Beam Width, Mid-band | 0.22° | 0.18° |
| Tx. Power Capability | 100W | |
| Feed Interface | WR42 | WR28 |
| Feed Insertion Loss | 0.6 | 0.4 |
| Isolation, Tx to Rx, dB | 90 | |
| First Sidelobe 90% Peaks under Following Envelop | -14 29-25logθ(1°≤θ＜20° ) | |
| MECHANICAL SPECIFICATION | ||
| Antenna Diameter | 4.5m | |
| Antenna Type | Cassegrain | |
| Mount Type | El. over Az. | |
| Surface Accuracy (RMS) | ≤ 0.2mm | |
| Antenna Pointing Range Azimuth Elevation Polarization | 0°～180°, ±60 °(Continuous) 0°～90°(Continuous) 180°(Continuous) | |
| Drive Mode | Manual or Motorized | |
| Materials of reflector | Aluminum alloy | |
| Finish of steel parts | Hot dipped zinc | |
| ENVIRONMENTAL SPECIFICATION | ||
| Operational Wind | 72km/h Gusting to 97km/h | |
| Survival Wind | 216km/h | |
| Temperature | -40°C ～ + 60°C | |
| Relative Humidity | 100% | |
| Solar Radiation | 1135Kcal/ h/ m2 | |
| Seismic (Survival) | 0.3g (H), 0.15g (V) | |
| Ice Loading | 13mm Operational; 25mm Survival | |