SIM Tech SIMCom SIM800 - Bluetooth Antenna Interface

Smart Machine Smart Decision
SIM800_Hardware Design_V1.09 50 2016-06-30
package
model
supplier
0201
LXES03AAA1-154
MuRata
0402
LXES15AAA1-153
MuRata
4.20.2. Bluetooth Antenna Interface
The module provides a Bluetooth antenna interface named BT_ANT to connect a Bluetooth antenna.
The Bluetooth antenna must be matched properly to achieve best performance, so the matching circuit is
necessary, the connection is recommended as the following figure:
Module
BT_ANT
(Pin 53)
GND
(Pin 54)
R201
C201
C202
BT
Antenna
Figure 48: Bluetooth antenna matching circuit
R201, C201, C202 are the matching circuit, the values depend on antenna debug result. Normally R201 is 0Ω,
C201 and C202 are not mounted.