GSM/GPRS Module Series
M66 Hardware Design
M66_Hardware_Design Confidential / Released 59 / 80
4.1.5. RF Cable Soldering
Soldering the RF cable to RF pad of module correctly will reduce the loss on the path of RF, please refer
to the following example of RF soldering.
Figure 41: RF Soldering Sample
4.2. Bluetooth Antenna Interface
M66 supports Bluetooth interface. Bluetooth is a wireless technology that allows devices to communicate,
or transmit data or voice, wirelessly over a short distance. It is described as a short-range communication
technology intended to replace the cables connecting portable and/or fixed devices while maintaining high
level of security. Bluetooth is standardized as IEEE802.15 and operates in the 2.4 GHz range using RF
technology. Its data rates of up to 3Mbps.
M66 is fully compliant with Bluetooth specification 3.0. M66 supports profile including SPP and OPP.
The module provides a Bluetooth antenna pad named BT_ANT.
Table 28: Pin Definition of the BT_ANT
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