AE04B-A0279 Rev -- APPENDIX C: APPLICATION NOTES
Document use is restricted to that described on cover
C-2
between the antennas to substantially greater than the gain of the amplifier (otherwise, feedback and
oscillation will occur). The isolation can be achieved in many ways including:
1. Physical separation using long feeders to keep the two antennas apart.
2. Directional antennas can be used, if the base station and the mobiles are on opposite sides
of the amplifier.
3. Vertical separation can be used by mounting the base station antenna high up a mast and
the mobile antenna as low as possible angled downwards to separate the two field patterns.
It is also necessary when siting the antennas to ensure that the maximum input signals to the amplifier do
not exceed the limits for the particular unit being used. If excessive signals do occur, overloading of the
amplifier can result in poor intermodulation and signal to noise performance.
