RF Exposure Info

FCC ID: JF6-8505U-4

RF Exposure Info

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FCCID_273128

                                            Antenna Type

                                          2FT Parab. 4FT Parab 6FT Parab 8FT Parab 10FT Parab 1FT Flat

Diameter, D in ft                                     2          4          6         8         10      1.41

Diamete, D in m                                 0.61        1.22       1.83      2.44       3.05        0.43

Near Field Region, Rnf in ft                     5.9       23.59      53.08     94.36     147.43        2.93

Near Field Region, Rnf in m                      1.8        7.19      16.18     28.76      44.94        0.89

Gain, G in dBi                                    29          35        38        41        42.5         23
Efficiency, n                                   0.58        0.58       0.51      0.57       0.52        0.55

Power Density, Wnf in mW/cm2                     0.8         0.2       0.08      0.05       0.03        1.52

Power Density at 5ft, Wff in mW/cm2             N/A        N/A        N/A       N/A       N/A        0.89072


Based on OET Bulletin 65 formulas:

Near Field Power Density: Wnf=16nP/Pi*D^2

Near Field region(ft): Rnf=D^2*F/3.934

Transition Field Power Density: Wff=Wnf*Rnf/R

Efficiency for parabolic antennas: n=(G*(wavelngth)^2)/((Pi*D^2)/4)

For flat panel antennas efficiency was considered n=0.55

All calculations were made at F=5.8Ghz and P=1000mW


2FT Flat

     2.82

     0.86

    11.72

     3.57

       28
     0.55

     0.38

    N/A



Document Created: 2002-09-27 08:18:33
Document Modified: 2002-09-27 08:18:33

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