User Manual

Epoch-HP RF Repeater
User Manual V1.1
Advanced RF Technologies, Inc. Proprietary Document Page 7 of 36
To prevent feedback, the donor and server antennas must be separated
by an appropriate distance to provide sufficient isolation. Isolation is
attained by separating antennas a sufficient distance so that the output
of one antenna does not reach the input of the other. This distance is
dependent on the gain of the repeater.
A sufficient isolation value is 13 ~ 15 dB greater than the maximum gain
of the repeater. For example, if the gain of the repeater is 50 dB, then an
isolation of 63 ~ 65 dB or greater is required. In the same manner,
because the Epoch-HP has a maximum gain of 95 dB, it requires an
isolation of at least 108 ~ 110 dB.
Donor Server
RF Repeater
Figure 1 - RF Repeater Oscillation