Silicon Labs

13

Physical dimensions .............................................................................................................................. 31

14

Layout guidelines................................................................................................................................... 32

14.1

WF121-E............................................................................................................................................ 32

14.2

WF121-N............................................................................................................................................ 32

14.3

WF121-A............................................................................................................................................ 33

14.4

Thermal considerations ..................................................................................................................... 34

14.5

EMC considerations........................................................................................................................... 34

15

Soldering recommendations .................................................................................................................. 36

16

Certifications .......................................................................................................................................... 37

16.1

CE ...................................................................................................................................................... 37

16.2

FCC and IC ........................................................................................................................................ 37

16.2.1

FCC et IC ................................................................................................................................... 39

17

Qualified Antenna Types for WF121-E.................................................................................................. 42