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Transceiver Design

Transceiver Design

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The link budget provides a means to design a transceiver and to perform the necessary analysis to ensure that the design is optimal for the given set of requirements. The link budget provides a way to easily make system trade-offs and to ensure that the transceiver operates properly over the required range. Once known or specified parameters are entered, the link budget is used to solve for the unknown parameters. If there is more than one unknown parameter, then the trade-offs need to be considered. The link budget is continually reworked, including the trade-offs, to obtain the best system design for the link. Generally a spreadsheet is used for ease of changing the values of the parameters and monitoring the effects of the change.

Chapter Contents:

  • 1.1 Frequency of Operation
  • 1.2 The Link Budget
  • 1.3 Power in dBm
  • 1.4 Transmitter
  • 1.4.1 Power from the Transmitter
  • 1.4.2 Transmitter Component Losses
  • 1.4.3 Transmitter Line Losses from the Power Amplifier to Antenna
  • 1.4.4 Transmitter Antenna Gain
  • 1.4.5 Transmitter Antenna Losses
  • 1.4.6 Transmitted EIRP
  • 1.5 Channel
  • 1.5.1 Free-Space Attenuation
  • 1.5.2 Propagation Losses
  • 1.5.3 Multipath Losses
  • 1.6 Receiver
  • 1.6.1 Receiver Antenna Losses
  • 1.6.2 Receiver Antenna Gain
  • 1.6.3 Receiver Line Losses from the Antenna to the LNA
  • 1.6.4 Receiver Component Losses
  • 1.6.5 Received Signal Power at the Output to the LNA
  • 1.6.6 Receiver Implementation Loss
  • 1.6.7 Received Power for Establishing the SNR of a System
  • 1.6.8 Received Noise Power
  • 1.6.9 Noise Figure
  • 1.6.10 Received Noise Power at the Detector
  • 1.6.11 Receiver Bandwidth
  • 1.6.12 Received Eb/No at the Detector
  • 1.6.13 Receiver Coding Gain
  • 1.6.14 Required Eb/No
  • 1.6.15 Link Budget Example
  • 1.6.16 Spread Spectrum Systems
  • 1.6.17 Receiver Spreading Losses
  • 1.6.18 Process Gain
  • 1.6.19 Received Power for Establishing the SNR for a Spread Spectrum System
  • 1.7 Summary

Inspec keywords: radio transceivers

Other keywords: unknown parameters; link budget; transceiver design; spreadsheet; specified parameters

Subjects: Radio links and equipment

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