Page 22 - GuideFWA

2.2.3. Antenna and Feeder Parameters

System Device Antenna TX/RX Horiz. Vert. Downtilt Feeder
Height Gain (dBi) Beamw. Beamw. (º) Losses (dB)
(m) (º) (º)
-3 2
PCS1900 Base 25 17 105 9 00
omni -3 2
Terminal 1,5 0 omni 00
9 -3 2
IS-95 Base 25 17 105 omni 00
-7 1
Terminal 1,5 0 omni 9 21
omni -7 1
IS-136 Base 25 17 105 21
17
Terminal 1,5 0 omni 60

DECT Base 15 12 120 8
60
Terminal 8 10 60

PHS Base 15 10 omni

Terminal 8 10 60

Transmitter and receiver antennae should assume a 1dB loss when on-horizontal-beam and 25 dB
losses when off-horizontal-beam relative to the gain values. It gives four different scenarios to be
treated:

Case 1A: Both TX and RX antennae are on-beam (total losses of 1+1 dB)
Case 1B: RX antenna is on TX beam, but TX antenna is out of RX beam (total losses

1+25 dB)
Case 2A: TX antenna is on RX beam, but RX antenna is out of TX beam (total losses

25+1 dB)
Case 2B: Both TX and RX antennae are off-beam (total losses 25+25 dB)

Related to the vertical radiation antenna pattern additional losses relative to the gain values have
been also assumed according to the typical vertical patterns and as a function of the distance
between interfering TX and victim RX.

Only reference values for antenna patterns were used.

12