Andrew ION-B Series, User Manual

Page: 170 / 181

170 ION-B User Manual
• 26 dBm ± 1 ( +27 dBm maximum, equivalent to 0.501 W) in the UMTS band
• The total output power at the antenna port is therefore:
P = 0.158W x 2 + 0.200W + 0.501W = 1.345 W,
By reading the cable specs, we get that RG223 cable losses can be estimated at 0.55 dB/m.
Total losses between the TFAM 91/18/20 output port and the antenna input port can therefore be
estimated as follows:
L = 0.55 (dB/m) x 10 (m) = 5.5 dB
By replacing the above values of G, L, P, S parameters inside the formula 6.1, we therefore get
the the following minimum safety distance from the antenna:
r
min
= { 10 · exp [ (7 - 5.5) / 10 ] · 1.345} / (4·π·0.1) } · exp (1/2) = 1.22 m