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Subelement A
RADAR Principles
Section 7
Components-1
What component of a RADAR receiver is represented by block 46 in Fig. 8A1?
  • The ATR box.
  • Correct Answer
    The TR box.
  • The RF Attenuator.
  • The Crystal Detector.
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A basic sample-and-hold circuit contains:
  • An analog switch and an amplifier.
  • An analog switch, a capacitor, and an amplifier.
  • An analog multiplexer and a capacitor.
  • Correct Answer
    An analog switch, a capacitor, amplifiers and input and output buffers.
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When comparing a TTL and a CMOS NAND gate:
  • Correct Answer
    Both have active pull-up characteristics.
  • Both have three output states.
  • Both have comparable input power sourcing.
  • Both employ Schmitt diodes for increased speed capabilities.
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Silicon crystals:
  • Are very sensitive to static electric charges.
  • Should be wrapped in lead foil for storage.
  • Tolerate very low currents.
  • Correct Answer
    All of these.
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Which is typical current for a silicon crystal used in a RADAR mixer or detector circuit?
  • Correct Answer
    3 mA
  • 15 mA
  • 50 mA
  • 100 mA
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What component of a RADAR receiver is represented by block 47 in Fig. 8A1?
  • The ATR box.
  • The TR box.
  • Correct Answer
    The RF Attenuator.
  • The Crystal Detector.
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