User's Manual

PRELIMINARY
CYBLE-224110-00
Document Number: 002-11264 Rev. *A Page 7 of 43
To maximize RF performance, the host layout should follow these recommendations:
1. The ideal placement of the Cypress BLE module is in a corner of the host board with the antenna located on the edge of the host
board. This placement minimizes the additional recommended keep-out area shown in item 2. Please refer to AN96841 for module
placement best practices.
2. To maximize RF performance, the area immediately around the Cypress BLE module trace antenna should contain an additional
keep-out area, where no grounding or signal traces are contained. The keep-out area applies to all layers of the host board. The
recommended dimensions of the host PCB keep-out area are shown in Figure 3 (dimensions are in mm).
Figure 3. Recommended Host PCB Keep-Out Area around CYBLE-224110-00 Trace Antenna
Host PCB Keep-Out Area around Trace Antenna