Rf Connections; Shielding - Sierra Wireless AirPrime EM7355 Hardware Integration Manual

Hardware Integration Guide
12 Proprietary and Confidential - Contents subject to change
Table 3-3: GSM frequency band support (Continued)
Band Frequencies
GSM 1800 Tx: 1710–1785 MHz
Rx: 1805–1880 MHz
GSM 1900 Tx: 1850–1910 MHz
Rx: 1930–1990 MHz
Table 3-4: CDMA frequency band support
Band
Band Class 0
(Cellular 800 MHz)
Band Class 1
(PCS)
Band Class 10
1
(Secondary 800 MHz)
1. BC10 subclasses 2 and 3 (system designator C and D) are sup-
ported
Table 3-5: GNSS frequency band support
Band
Narrow-band GPS
Wide-band GPS + GLONASS

RF connections

When attaching antennas to the module:
Use any of the following (or compatible) 2x2 mm 
•
RF receptacle connectors to attach antennas to the module's connection
points
Match coaxial connections between the module and the antenna to 50 .
•
• Minimize RF cable losses to the antenna; the recommended maximum cable
loss for antenna cabling is 0.5 dB.
• To ensure best thermal performance, if possible use the mounting hole to
attach (ground) the device to a metal chassis.
Note: If the antenna connection is shorted or open, the modem will not sustain permanent
damage.

Shielding

The module is fully shielded to protect against EMI and must not be removed.
Frequencies
Tx: 824–849 MHz
Rx: 869–894 MHz
Tx: 1850–1910 MHz
Rx: 1930–1990 MHz
Tx: 816–824 MHz
Rx: 861–869 MHz
Frequencies
Rx: 1575.42 MHz
Rx: 1565–1606 MHz
4112880