User's Manual

UtiliNet® Endpoint User Guide 1-5-2007
Page 5 of 30
© Cellnet 2005
Transmit Antenna...................................................................................................... 21
Ground Plane Effects................................................................................................ 21
Transmitter Transmission Line Loss ........................................................................ 22
Total Path Loss ......................................................................................................... 22
Free Space Path Loss ................................................................................................ 22
Additional Path Loss Attenuation............................................................................. 22
Receiver Antenna...................................................................................................... 23
Receiver Transmission Line Loss............................................................................. 23
Receiver .................................................................................................................... 23
Noise Floor Factor .................................................................................................... 23
Multipath Fade Factor............................................................................................... 23
Margin of Safety ....................................................................................................... 24
Summary................................................................................................................... 24
Keeping a Check on Interference.............................................................................. 25
In-Band Interference................................................................................................. 26
Out-of-Band Interference.......................................................................................... 26
Cellular Base Station Interference ............................................................................ 26
Paging System Interference ...................................................................................... 26
Performing RF Field Studies .................................................................................... 26
Design Considerations .............................................................................................. 27
Glossary___________________________________________________________28