Integration Manual
Table Of Contents
PVS8 Hardware Interface Overview
5 Antenna Interfaces
29
PVS8_HIO_v03.000a Page 26 of 37 2013-04-08
Confidential / Preliminary
5 Antenna Interfaces
5.1 CDMA Antenna Interface
The PVS8 CDMA antenna interface comprises a main CDMA antenna as well as an optional
CDMA Rx diversity antenna to improve signal reliability and quality
1
. The interface has an im-
pedance of 50
. PVS8 is capable of sustaining a total mismatch at the antenna interface with-
out 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. Matching networks are not in-
cluded on the PVS8 PCB and should be placed in the host application, if the antenna does not
have an impedance of 50
.
Regarding the return loss PVS8 provides the following values in the active band:
1.
By delivery default the optional CDMA Rx diversity antenna is configured as available for the module. To
avoid negative side effects and performance degradation it is recommended to disable the diversity an-
tenna path if
- the host application does not support a diversity antenna
- the host application includes a diversity antenna - but a network simulator is used for development and
performance tests.
Please refer to [1] for details on how to configure antenna settings.
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
Idle <
5dB not applicable