User guide

WA_DEV_GL6100_PTS_001 Rev 002 May 24, 2010 45
GL61x0 Product Technical
Specification and User Guide
Interfaces and Peripherals
6.2.2.1. RF Performances
RF performances are compliant with ETSI recommendation GSM 05.05. Refer to Table 12: Supported
RF Frequencies for the list of supported RF frequencies. Refer to the tables below for the main
parameters used for both the Receiver and the Transmitter.
Table 26: Main Receiver Parameters for the GL61x0
Parameters
Values
GSM850 Reference Sensitivity
-108dBm Static
E-GSM900 Reference Sensitivity
-108dBm Static
DCS1800 Reference Sensitivity
-107dBm Static
PCS1900 Reference Sensitivity
-107dBm Static
Selectivity @ 200 kHz
> +9dBc
Selectivity @ 400 kHz
> +41dBc
Linear dynamic range
63dB
Co-channel rejection
>= 9dBc
Table 27: Main Transmitter Parameters for the GL61x0
Parameters
Values
Maximum output power (EGSM & GSM850)
33dBm +/- 2dB at ambient temperature
Maximum output power (GSM1800 & PCS1900)
30dBm +/- 2dB at ambient temperature
Minimum output power (EGSM & GSM850)
5dBm +/- 5dB at ambient temperature
Minimum output power (GSM1800 & PCS1900)
5dBm +/- 5dB at ambient temperature
6.2.2.2. Antenna Specifications
For any other antenna applied, it must fulfill the requirements specified in the table below.
The optimum operating frequency depends on the application. A dual-band or quad-band antenna
should operate in these frequency bands and have the following characteristics:
Table 28: GL61x0 Antenna Specifications
Characteristics
E-GSM 900
DCS 1800
GSM 850
PCS 1900
TX Frequency
880 to 915 MHz
1710 to 1785 MHz
824 to 849 MHz
1850 to 1910 MHz
RX Frequency
925 to 960 MHz
1805 to 1880 MHz
869 to 894 MHz
1930 to 1990 MHz
Impedance
50Ω
VSWR
Rx max
1.5 :1
Tx max
1.5 :1
Typical Radiated
gain
0dBi in one direction at least
Tip: Both mechanical and electrical antenna adaptations are key issues in the design of a GSM terminal.
Sierra Wireless strongly recommends working with an antenna manufacturer to either develop an
antenna adapted to the application or to adapt an existing solution to the application.