Specifications

Rev 2.0 Apr.10 Proprietary and Confidential 95
• For main and diversity path antennas, make sure the antennas (including
contact device, coaxial cable, connectors, and matching circuit with no more
than six components, if required) have nominal impedances of 50
 across
the frequency bands in Ta bl e 1 -3 on page 92.
• All tests (except isolation/correlation coefficient)—Ttest the main or diversity
antenna with the other antenna terminated.
• Any metallic part of the antenna system that is exposed to the outside
environment needs to meet the electrostatic discharge tests per IEC61000-4-
2 (conducted discharge +8kV).
• The functional requirements of the antenna system are tested and verified
while the embedded module’s antenna is integrated in the host device.
Note: Additional testing, including active performance tests, mechanical, and accelerated
life tests can be discussed with Sierra Wireless’ engineering services. Contact your Sierra
Wireless representative for assistance.
Voltage Standing Wave Ratio (VSWR)
Measure VSWR for each antenna (main, diversity) using the following criteria:
• Measure VSWR in free space at the antenna’s coaxial connector (feeding
terminal) when the antenna is installed in the host device with the cable
routed to the Mini Card slot.
• Use an HP8753E network analyzer (or equivalent).
Table 1-4: VSWR (Voltage Standing Wave Ratio)
Frequency
(MHz)
Typical
VSWR
Worst-case VSWR
at band edges
Notes
Main antenna
824–849 2.5:1 850-band Tx
869–880 3.5:1 850-band Rx excluding part inside
900-band Tx
880–915 2.5:1 900-band Tx
925–960 3.5:1 900-band Rx
1710–1785 2.5:1 1800-band Tx
1805–1850 3.5:1 1800-band Rx excluding part inside
1900-band Tx
1850–1910 2.5:1 1900-band Tx
1920–1980 2.5:1 2100-band Tx and part of 1900-band
Rx
1980–1990 3.5:1 Part of 1900-band Rx outside of
2100-band Tx
2110–2170 3.5:1 2100-band Rx