Transcription of Link Budget and Fade Margin - Campbell Sci
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APPLICATION NOTE App. Note Code: 3RF-F The link Budget and Fade Margin 9/16 Copyright 2016 Campbell Scientific, Inc. i Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction .. 1 2. Transmit Power .. 3 3. System Loss .. 3 4. Antenna Gain .. 5 5. Path Loss .. 5 Line-of-Sight Path of Propagation .. 5 Free Space Propagation Model .. 7 2-Ray Multipath Propagation Model .. 7 6. Received Signal Level .. 10 7. Fade Margin .. 11 8. Conclusions .. 13 Figures 1-1. System Gain-Loss Profile for a link Budget .. 1 5-1. Optical Horizon vs. RF Horizon .. 5 5-2. Path Geometry for 2-Ray Propagation Model .. 8 Table 3-1. Attenuation Specification for Belden 9914 .. 4 1 The link Budget and Fade Margin 1. Introduction When planning a long road trip to a remote destination, one of the first considerations is the fuel requirement.
Therefore, a VSWR of 2:1 equates to a mismatch loss of 0.511 db. The Link Budget and Fade Margin . 5 . Based on the preceding information, we can now calculate the system loss for both ends of the link. 4. Antenna Gain By convention, antenna …
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