User's Manual

UM-B-045
DA14580 Range extender v.2 reference application
Company confidential
User manual
Revision 1.1
14-September-2015
CFR0012-00 Rev 1
25 of 60
© 2015 Dialog Semiconductor
Figure 21: Radiation diagram for the board placed horizontally
The stand-alone board presents lower antenna gain than the board mounted on the interposer. This
is explained due the small ground size of the board. It is recommended for Range Extender v.2 to be
mounted on a pcb with bigger ground surface or when embedded to a new design to follow the
dimensions in Figure 22.
Figure 22: IFA antenna implementation
The dimensions above are given for a typical FR1 PCB substrate, 1mm thick. The antenna length is
adjusted for resonance including a 1mm plastic enclosure placed in contact with the PCB antenna.
The red outline indicates the antenna footprint, i.e. required allocation of PCB space. The footprint of
the antenna is available per request in dxf format.
Legend (Figure 22):
Clearance between antenna arm and GND plane right a.