RSS feed
Power supply (DC) for phased array antenna
Multi-Kilowatt low voltage DC power conditioning for active satellite SAR antennas.
Active antennas are equipped with hundreds of transmit/receive modules to be supplied with DC voltages between -5 and +10 V.
A central DC to AC inverter generates a 115 V AC bus including redundancy. AC power is distributed to the antenna panels. Panel Power Conditioners re-convert AC to low voltage DC.
Additional features are S/C bus protection, failure detection and isolation, redundancy switching, housekeeping etc.
Features / technical details
- Unlimited power available due to modular design
- DC to AC inversion by 1.2 kW inverter modules
- 115 V, 30 kHz intermediate AC bus for low loss power distribution
- AC to DC conversion by de-centralised Panel Power Conditioners (PPC)
- 10 to 20 T/R modules supplied by one PPC
- Overall efficiency: 80 %
- PPC electronics directly integrated into antenna structure
- Various protection features implemented
- High reliability due to redundant DC/AC inverters, failure detection and isolation
Parts level acc. QML-Q; QML-V and equivalents
Categories
Applications
Multi-Kilowatt, low voltage DC power conditioning for large active array SAR antennas
Reference customers
DLR (TerraSAR-X, TanDEM-X)