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DFDs & IFMs

API Technologies produces a wide range of Digital Frequency Discriminators (DFDs) and Instantaneous Frequency Measurement receivers (IFMs) tailored to the stringent requirements of today’s state-of-the-art EW receivers.

API’s DFDs are available in a wide range of designs offering coverage of either specific frequency bands or full 2-18 GHz coverage in a single unit. DFDs find applications in both low cost radar warning receivers, enhancing the identification of threat signals against dense non threat background signals, and sophisticated ESM and ECM receivers, where high probability of intercept and high resolution are required enabling pulse by pulse signal de-interleaving.

Our high speed IFMs utilize either discrimination, channelization or a combination of those two techniques. API’s proprietary Suspended Substrate Stripline (SSS) technology is used, together with custom Application Specific Integrated Circuit (ASIC) processing circuits, to ensure our customers of high reproducibility, small size and low cost.

Data Formats (parallel):

  • TTL (standard)
  • LVTTL
  • LVDS

Data Formats (serial):

  • VME Interface

Trigger Formats:

  • 20 MHz Pipelined Trigger (standard)
  • Single Trigger
  • Self-Trigger

Dynamic Ranges:

  • -50 to +10 dBm (Standard)
  • 0 to +10 dBm (Standard)
  • Any range within -55 to +10 dBm

Input Voltages:

  • Required:
    • +12 to +15 VDC @ 800 mA max
    • +5.0 to +5.2 VDC @ 800 mA max
  • Options (choose one):
    • -5.0 to -5.2 VDC @ 100 mA max
    • -8.0 to -12.0 VDC @ 100 mA max
DFD and IFM Solutions For:
  • Electronic Countermeasures
  • Signal Intelligence
  • Radar Warning Receivers
  • Capture of Signal RF Pulse Event
  • Identification of Frequency Agile Radar
Broadband & Low Power
  • Our products are available in a wide range of designs offering coverage of either specific frequency bands or full 2-18 GHz coverage in a single unit.
  • Power: <20W
High resolution & Narrow Pulse Width
  • Resolution: 14 bit, 1 MHz
  • Pulse Width: 50 ns to CW