Rf Integration; Rf Connection; Ground Connection; Table 1: Typical Rf Parameters For A Cdma Embedded Module - Sierra Wireless MC5720 Hardware Integration Manual

RF Integration

This chapter provides information related to the RF (Radio Frequency)
integration of the EM. The frequencies of operation and performance
specifications vary depending on the EM model used. RF performance
parameters for a typical EM are listed below.

Table 1: Typical RF parameters for a CDMA Embedded Module

RF connection

You can attach an antenna to the antenna connection point on the embedded
module using the Hirose UFL connector.
Any coaxial connection between the EM and the antenna requires the antenna to
be correctly matched to 50 Ω. Note that additional RF cabling losses affect the
performance values listed in the EM specification.

Ground connection

There needs to be a very god ground connection to the modem through the host
connector. It is recommended that the two mounting holes at the top of the
MiniCard be connected to system ground. The integrator needs to be careful
about noise on the ground getting into the RF. Noise could potentially be coupled
to the module from the host board, depending on the design. This is mainly an
issue for host designs that have signals traveling along the length of the module,
or circuitry operating at both ends of the module interconnects. In some cases if
Rev 1.2
A p r - 0 5
Parameter
Transmit Band
Maximum Transmit Power
Receiver Band
Receiver Sensitivity
GPS Band
P r o p r i e t a r y a n d c o n f i d e n t i a l
Band Value
PCS 1851 to 1910 MHz
Cellular 824 to 849 MHz
IMT 1920 to 1980 MHz
PCS +24.0 dBm (251 mW)
Cellular +24.0 dBm (251 mW)
IMT +23.0 dBm (200 mW)
PCS 1930 to 1990 MHz
Cellular 869 to 894 MHz
IMT 2110 to 2170 MHz
PCS >-106 dBm
Cellular >-106 dBm
IMT >-105 dBm
1575.42 MHz
R F I n t e g r a t i o n
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