Gemalto M2M GmbH AGS2 User Manual
AGS2-W Hardware Interface Overview
4 Antenna Interface
20
AGS2-W_HIO_v01.000
Page 20 of 33
2012-05-16
Confidential / Preliminary
4
Antenna Interface
The RF interface has an impedance of 50
. AGS2-W is capable of sustaining a total mismatch
at the antenna lines without any damage, even when transmitting at maximum RF power.
The external antenna must be matched properly to achieve best performance regarding radi-
ated power, modulation accuracy and harmonic suppression. Antenna matching networks are
not included on the AGS2-W module and should be placed in the host application if the antenna
does not have an impendance of 50
ated power, modulation accuracy and harmonic suppression. Antenna matching networks are
not included on the AGS2-W module and should be placed in the host application if the antenna
does not have an impendance of 50
.
Regarding the return loss AGS2-W provides the following values in the active band:
Table 8: Return loss in the active band
State of module
Return loss of module
Recommended return loss of application
Receive
> 8dB
> 12dB
Transmit not
applicable
> 12dB