Antenna Separation Recommendations - Sierra Wireless AirLink GX Series Hardware User's Manual

Rev 4 Jan.15
• Data throughput
• Radio front-end life span

Antenna Separation Recommendations

• The antennas should be separated so that there is at least 10 dB isolation
over the entire operating frequency range.
• The separation should be at least 1/4 wavelength (), but preferably
1/2 wavelength or greater of the lowest operating frequency. See
specific recommendations, based on your network service type and
frequency.
Note: The values in the table are approximate antenna separation values for monopole or
dipole type antennas.
Table 2-1: Recommended Antenna Separation
Service Frequency
LTE
LTE
LTE
LTE
LTE
LTE
WCDMA
WCDMA
WCDMA
WCDMA
CDMA/EV-DO
CDMA/EV-DO
GSM/GPRS/
EDGE
GSM/GPRS/
EDGE
GSM/GPRS/
EDGE
GSM/GPRS/
EDGE
Wavelength (
(MHz) (mm)
700 428
800 375
900 333
1800 167
2100 143
2600 115
850 353
900 333
1900 158
2100 143
800 375
1900 158
850 353
900 333
1800 167
1900 158
Installation and Startup
Table 2-1
Best Antenna Good Antenna
Separation (mm) Separation (mm)

(1/2 (1/4
214 107
187
167
83
71
58
176
167
79
71
187
79
176
167
83
79
for

94
83
42
36
29
88
83
39
36
94
39
88
83
42
39
29