Transmission Measurements

Transmission Measurements

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The most common network measurement is characterizing the transmission through a device. In many electronic systems, the response at the output of a system block due to a signal at the input is a critical parameter. For distortionless transmission through a device, the output signal must be identical to the input signal, perhaps delayed in time and scaled in amplitude. This implies the device must have a flat amplitude response and a linear phase response. These criteria are not usually completely met, but can be approached in practice. Measurement error is introduced into transmission measurements via a variety of mechanisms. These error mechanisms can be quantified so that the quality of the measurement is known.

Chapter Contents:

  • 15.1 Distortionless Transmission
  • 15.2 Nonlinearity
  • 15.3 Linear Distortion
  • 15.4 Insertion Gain and Loss
  • 15.5 Measurement Error
  • 15.6 Normalization
  • 15.7 Importance of Linear Phase
  • 15.8 Deviation from Linear Phase
  • 15.9 Phase Error
  • 15.10 Group Delay
  • 15.11 Delay Aperture
  • 15.12 Measurement Plane
  • 15.13 Line Stretch
  • References

Inspec keywords: linear systems; network analysers; signal processing; phase measurement; measurement errors

Other keywords: error mechanism; measurement error; flat amplitude response; network measurement; network analyzer; electronic system; distortionless transmission; transmission measurement; output signal; linear phase response

Subjects: Network and spectrum analysers; Signal processing and detection; Phase and gain measurement

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