Aircraft Radio Altimeter (4.3 GHz)

Listed below is some technical information for the FMCW Radar Altimeter developed for aircraft.

  • Digitally generated frequency ramps
  • PLL [Phase Locked Loop] assisted frequency synthesis and frequency stabilization
  • Highly linear low-noise amplifiers
  • Microstrip patch array antennas
  • Automatic gain control
  • Intelligent digital signal processing
  • Interfaces: ARINC 429 (low- and high-speed mode: 12.5 kbit/s and 100 kbit/s), RS485, RS232
  • Power supply: 12-36 volts
  • Power consumption: < 3 Watt
  • ESD/EFT/impulse voltage [lightning-induced] – protection of supply lines and important interfaces
  • Short circuit protection
  • Transmit power: < 100 mW (20 dBm)
  • Measuring frequency: > 20 Hz
  • Measuring range: 2 – 2600 Feet (0.6 – 800 m)