This Appendix discusses various topics associated with antennas, including: the Friis transmission formula, wireless link range versus power input, decibels, antenna gain and directivity, attenuation and voltage standing wave ratio, return loss and reflection loss, and attenuators.

Chapter Contents:

• D.1 Friis transmission formula
• D.2 Wireless link range versus power input
• D.3 Decibels
• D.3.1 Historical origin of the decibel (dB)
• D.4 Antenna gain and directivity
• D.5 Attenuation and voltage standing wave ratio
• D.5.1 Example 1
• D.5.2 Example 2
• D.6 Return Loss and Reflection Loss
• D.7 Attenuators
• D.7.1 Example 3
• References

Inspec keywords: antenna theory; radio links

Other keywords: decibels; Friis transmission formula; reflection loss; directivity; attenuation; wireless link range versus power input; voltage standing wave ratio; return loss; attenuators; antenna gain

Subjects: Antenna theory; Single antennas