User's Manual

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2.4.5 Antenna
In BG864-2.4 there are two internal antennas, one for Bluetooth and one for the Short Range
technology.
2.4.5.1 Bluetooth Antenna specifications
The Bluetooth antenna for BG864-2.4 has the following specifications:
Bluetooth ANTENNA SPECIFICATIONS
Frequency Range
2.4 GHz
Bandwidth
2.4 – 2.5 GHz
Peak
Gain
2.2 dBi
Average Gain
1.9 dBi
Impeda
nce
50 ohm
Peak Efficiency
74%
Average Efficiency
72%
VSWR
< 2:1
Table 2 – Bluetooth Antenna specifications
2.4.5.2 Short Range Antenna Specifications
The short range antenna for BG864-2.4 has the following specifications:
Short Range ANTENNA SPECIFICATIONS
Frequency Range
2.4 GHz
Bandwidth
2.4 – 2.5 GHz
Peak
Gain
2.2 dBi
Average Gain
1.9 dBi
Impedance
50 ohm
Peak Efficiency
74%
Average Efficiency
72%
VSWR
< 2:1
Table 3 – Short Range Antenna specifications
2.4.6 Serial Port
The RS232 standard interface serves to connect a PC, Data Terminal Equipment (DTE) or an
application, wich acts as host controller for the BG864-2.4 with all its functions.
Serial port connects directly the host controller with the UART-Debug of the ARM chip inside BG864-
2.4.
RS232 level translator is present on board.