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Bruce's Precision Time and Frequency Systems

Bruce's set of circuits, notes, references, and practical tips for precision time and frequency systems

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Clock Conditioning

• Clock Shapers

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Dual Mixer Time Difference Systems

• General Info on DTMD
• Mixers
• Protection of mixers from Preamp faults
• Zero Crossing Detectors
• Testing Zero Crossing Detectors
  • Offset Sources
  • Algorithms

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Phase Noise

• What is Phase Noise?
  • Phase Noise Theory
  • S_ø(f), L(f)
  • Frequency Multiplication and Division
• Phase Noise Measurement
  • Low Noise Mixer Preamp
  • Mixers
  • System Calibration
  • Timepod PN and other measurements
• Low Phase Noise Design
  • Frequency Multipliers
  • Frequency Dividers
  • Isolation Amplifiers
  • Crystal Oscillators
  • Buffer Amplifiers

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Time stamping and Time Interval Measurement

• Time to digital converters
  • Time to Amplitude Converters
• Synchronisers

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Miscellaneous

• Oscillator Injection Locking
• Linear Phase Comparators
• Low Noise Power Supplies
• Low Noise Differential Preamp
• 5V PECL to CMOS 50 Ohm Driver
• RS422 to RS232 transceiver for GPS Receiver