Specifications

Cinterion
®
EXS82-W Hardware Interface Overview
2.2 RF Antenna Interface
25
 EXS82-W_HIO_v00.038 2019-12-27
Public / Preliminary
Page 16 of 44
2.1.7 SIM Switch
The UICC/USIM/SIM interface lines may be connected to an external SIM card multiplexer con-
trolled by the SIM_SWITCH signal. Thus, it becomes possible to switch between two networks/
subscriptions each with their own UICC, and maybe different connection speeds.
2.1.8 SUSPEND Mode Indicator
When all conditions for entering into SUSPEND mode are fulfilled, the SUSPEND_MON signal
changes from high to low, indicating that the module has entered its SUSPEND mode.
2.2 RF Antenna Interface
The RF interface has an impedance of 50Ω. EXS82-W is capable of sustaining a total mismatch
at the antenna line 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 EXS82-W module and should be placed in the host application if the anten-
na does not have an impedance of 50
Ω.
Regarding the return loss EXS82-W provides the following values in the active band:
Table 2: 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
Idle ≤5dB not applicable