ELD-EMB02072: RF Front End Control Unit for S-Band DTRM

RF front end control unit for S-band DTRM is custom form factor card which is part of 200W DTR module. This board is used in interfacing with the antenna array in RADAR system. RF front end control unit for S-band DTRM is capable of RF transmission and reception at S-band frequencies with signal conditioning with filtering and amplification over the signal chain.

The system’s control mechanism has to meet the timing requirement of the RADAR. The phase shifters and attenuators need to be configured with the frequency of incoming TRP. The systems monitors the temperature, RF power, DC voltages along with TRP signal continuously and report it periodically.

ELDAAS developed test jig and GUI interface to control and monitor the TRM status and configuration of phase,TRP etc.

  • Switching circuit for latest GaN technology
  • Test jig for simulating RADAR interface signals
  • FPGA auto configuration at power-ON from onboard memory
  • Onboard voltage regulators for generating DC voltages from 50V
  • Voltage monitor circuit for board health monitoring
  • GaN PA, gain blocks, LNAs, Protection circuit and SPDT switching time less than 200nsec w.r.t. RADAR TRP signal

  • Microsemi Smart Fusion SoC A2F200 FPGA
  • LVDS interface for interfacing RADAR baseband card
  • Negative sequencing (GaN device gate switching) and Positive sequencing
  • Switching time is less than 200ns
  • Serial NOR memory size 8MB
  • UART baud rate of 5Mbps with 16-bits data
  • TRP pulse propagation and gating with duty cycle protection to protect faulty control inputs
  • Independent control of each channel
  • 6-bit phase (LSB=5.625 °) and 6-bit attenuation( 0-31.5dB) control
  • Up to 200 µs pulse width, 20% duty cycle
  • Fault monitoring
    • Voltage monitoring
    • Temperature monitoring
    • RF O/P power monitoring
  • Protection circuitry for graceful degradation
    • Supports single channel operation when one channel is isolated due to fault
    • Fault handling: support Rx operation on Tx chain failure and vice versa
    • Automatic isolation of faulty chain to prevent power supply loading
  • Reverse voltage protection
  • 20% duty cycle protection circuit


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  • ELDAAS Technologies Pvt. Ltd.
  • 324, 2nd Floor
  • 1st Cross,Lal Bahadur Nagar
  • B.Channasandra, Kasturinagar
  • Bangalore, Karnataka, India
  • +91 80 4200 9090
  • +91 9739 696 999

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