8 Antenna Placement Rule

For Bluetooth-enabled products, the antenna placement affects the overall performance. The antenna requires free space to radiate RF signals, and it must not be surrounded by the GND plane.

The following figure illustrates a typical example of the good and poor antenna placement on the main application board with the GND plane.

Figure 8-1. Antenna Placement Examples

The following figure illustrates the keep-out area recommended for the PCB antenna.

Figure 8-2. Keep-Out Area Recommended for PCB Antenna
Note: For additional information on the antenna placement, refer to the antenna-specific data sheet from the antenna manufacturer.