Sierra Wireless MC5725 Hardware Integration Manual page 107

Rev 1.9.1 Feb.09
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
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 A-5: VSWR (Voltage Standing Wave Ratio)
Frequency Typical VSWR
(MHz)
Main antenna
824–849
869–880
880–915
925–960
1710–1785
1805–1850
1850–1910
1920–1980
1980–1990
2110–2170
Diversity / GPS antenna
869–894 < 3:1
1930–1990 < 3:1
2110–2170 < 3:1
Proprietary and Confidential
Antenna Specification
Worst-case
VSWR at band
edges
2.5:1 850-band Tx
3.5:1 850-band Rx excluding
part inside 900-band Tx
2.5:1 900-band Tx
3.5:1 900-band Rx
2.5:1 1800-band Tx
3.5:1 1800-band Rx excluding
part inside 1900-band Tx
2.5:1 1900-band Tx
2.5:1 2100-band Tx and part of
1900-band Rx
3.5:1 Part of 1900-band Rx
outside of 2100-band Tx
3.5:1 2100-band Rx
<3.5:1
Preferable to have input
<3.5:1
VSWR < 2:1
<3.5:1
Notes
107