User's Guide

ATOP3.5G Product Description
80447ST10636A rev.10 – 2015-03-03
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 33 of 66
Mod. 0808 2011-07 Rev.2
Table 8 Cellular antennas
Due to their ESD protection implementation the antennas are DC grounded. Parameters mentioned in this table are indicative
and taken from supplier data sheets.
Symbol Parameter Conditions Min Max Unit
R
I
input resistance DC voltage - 1 Ω
VSWR
load
load voltage standing wave
ratio
all phase angles - 20:1 -
P
o(sp)
spurious output power LOW bands; for all phase angles, load VSWR
= 12:1, all phase angles
-
30
dBm
HIGH bands; for all phase angles,
load VSWR
= 8:1, all phase angles
-
30
dBm
Table 9 GPS passive antenna input
Due to its ESD protection implementation, the GPS antenna is DC grounded. Parameters mentioned in this table are
indicative and taken from supplier data sheets.
Symbol Parameter Conditions Min Max Unit
R
I
input resistance DC voltage - 1 Ω
Table 10 GPS active antenna input and antenna bias
Parameters mentioned in this table are indicative and taken from supplier data sheets.
Symbol Parameter Conditions Min Max Unit
V
I(max)
maximum input voltage DC voltage
25
+25 V
I
I
input current DC current - 70 mA