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Wireless Link Budget

A link budget commonly refers to the complete gain and loss equation from the transmitter, through the ambient medium (air, cable, waveguide, fiber, etc.) and through to the receiver. Although the complete equation would incorporate many terms, the high-level block diagram shown below is often used.

See the Path Loss calculators.

Prx = Ptx + Gtx + Grx - Afs - Am
where:
Prx = received power at detector ( dBW )
Ptx = transmitter output power ( dBW )
Gtx = transmitter antenna gain ( dBi )
Grx = receiver antenna gain ( dBi )
Afs = free space attenuation ( dB )
Am = miscellaneous attenuation ( radome, rain, etc. )

 


Link budget


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RF Cascade Workbook
 RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

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