Computer Techniques

Computer Techniques

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Historically, the analysis of oscillator circuits involved the selection of a particular topology and then finding symbolic equations for that topology. Once the symbolic equations were found, evaluating which circuit element values satisfied the oscillation criteria required little computational effort. Abundant technical literature exists with symbolic equations for various oscillator structures. This technique was appropriate in a day when numeric tools were the slide rule and paper and pencil. Unfortunately, each time the engineer wishes to investigate a new oscillator topology the symbolic equations must be found. The symbolic approach is efficient for designing oscillators of one type but oppresses exploration of alternative and therefore, perhaps, more optimum structures.

Chapter Contents:

  • 6.1 Oscillating Simulation
  • 6.2 Simple Resonator Example
  • 6.3 Oscillator Synthesis
  • 6.3.1 Synthesis Example
  • 6.3.2 Analysis of the Example
  • 6.3.3 Optimization of the Example
  • 6.3.4 Noise Performance of the Example
  • 6.4 SPICE Analysis of Oscillators
  • 6.5 Loaded Q Limitation
  • 6.6 100MHz Loop Oscillator Measured Data
  • 6.7 Negative-Resistance Oscillator Computer
  • 6.7.1 Analysis Fundamentals
  • 6.7.2 Device Selection
  • 6.7.3 Circuit Enhancements
  • 6.8 Broad Tuning UHF VCO Example
  • 6.8.1 Frequency Tuning Linearity
  • 6.9 Spice Analysis of the UHF VCO
  • 6.9.1 Oscillator Starting Time
  • 6.9.2 The Oscillator Spectrum
  • 6.10 References

Inspec keywords: oscillators; circuit analysis computing; network topology

Other keywords: topology; computer technique; oscillator circuit analysis; numerical tool; symbolic equation

Subjects: Electronic engineering computing; Oscillators; Computer-aided circuit analysis and design

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