LTE Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design Confidential / Released 27 / 42
3.8.6. WAKE# Signal
The WAKE# signal is an open collector signal which is similar to RI signal, but a host pull-up resistor and
AT+QCFG=
“risignaltype”,“physical”
command are required. When URC returns, there will be 120ms
low level pulse output as below.
URC return
120ms
High
Low
(external
pull-up)
Figure 12: WAKE# Behavior
3.9. Antenna Interfaces
EC25 Mini PCIe antenna interfaces include a main antenna interface, an Rx-diversity antenna interface
and a GNSS antenna interface. And Rx-diversity function is enabled by default.
The following table shows the requirement on main antenna, Rx-diversity antenna and GNSS antenna.
Table 13: Antenna Requirements
Type
Requirements
GNSS
Frequency range: 1561~1615MHz
Polarization: RHCP or linear
VSWR: <2 (Typ.)
Passive antenna gain: >0dBi
GSM/WCDMA/LTE
VSWR: ≤2
Gain (dBi): 1
Max Input Power (W): 50
Input Impedance (ohm): 50
Polarization Type: Vertical
Cable Insertion Loss: <1dB
(GSM900, WCDMA B5/B8, LTE B5/B8/B12/B17/B20)
Cable Insertion Loss: <1.5dB
(GSM1800, WCDMA B1/B2/B3/B4, LTE B1/B2/B3/B4)
Cable insertion loss: <2dB
(LTE B7/B38/B40/B41)
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