Quad Digital Receiver (QDR) Board

The Quad Digital Receiver (QDR) Board is a 6U conduction cooled board with VPX connector for backplane interfacing. The board has four high speed ADCs capable of sampling RF signals synchronously. The board has FPGAs to implement signal processing algorithms. IF front-end module with 1 GHz bandpass filter and amplifier for signal conditioning. Supports data transfer, configuration and remote upgradation of firmware over Gigabit Ethernet interface.

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Quad Digital Receiver (QDR) Board

The Quad Digital Receiver (QDR) Board is a 6U conduction cooled board with VPX connector for backplane interfacing. The board has four high speed ADCs capable of sampling RF signals synchronously. The board has FPGAs to implement signal processing algorithms. IF front-end module with 1 GHz bandpass filter and amplifier for signal conditioning. Supports data transfer, configuration and remote upgradation of firmware over Gigabit Ethernet interface..

The board is used for RF signal acquisition and processing in electronic warfare systems.

KEY FEATURES

  • Synchronous sampling from four ADC channels
  • Phase synchronization of < ± 3 degrees
  • Analog input bandwidth: 1.5 GHz to 2.5 GHz sampled at 2.7 Gsps
  • Provision for ADC clocking through onboard clock or external input
  • Dedicated signal conditioning front end module
    • Bandpass filter and amplifier to enhance the RF signal power
  • 512 point FFT engine and Cordic algorithm for processing ADC data
  • Remote FPGA image upgrade
  • Graphical user interface support for
    • Configuring of onboard devices
    • Capturing of data
    • Measuring of phase, amplitude and frequency of the captured data
    • Health monitoring of board and device
    • Signal generator control using SCIPI command for automatic testing