Transcription of RANGE CALCULATION Description - Microchip …
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RANGE CALCULATION Description - Microchip …
9144C-RKE-07/15 DescriptionFor restricted-power UHF* communication systems, as defined in FCC Rules and Regula-tions Title 47 Part 15 Subpart C intentional radiators* , communication RANGE capability is a topic which generates much interest. Although determined by several factors, communica-tion RANGE is quantified by a surprisingly simple equation developed in 1946 by Friis of Denmark. This paper begins by introducing the Friis Transmission Equation and examining the terms comprising it. Then, real-world-environment factors which influence RF commu-nication RANGE and how they affect a Link Budget* are investigated. Following that, some methods for optimizing RF-link RANGE are given.
Range Calculation [APPLICATION NOTE] 9144C–RKE–07/15 4 2. RF in a Real-world Environment Modeling or predicting radio wave behavior in a real-world environment is an exercise always characterized by uncertainty.
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