Introduction 
This document provides general Si4822/26/27/40/44 design and AM/FM/SW antenna selection guidelines, including schematic, BOM, and PCB layout. All users should follow the Si4822/26/27/40/44 design guidelines presented in “2. Si4822/26/27/40/44 Default Frequency Band Definition and Selection”and “3. Si48422/26/27/40/44 SSOP/SOIC Schematic and Layout” and choose the appropriate antennas based on the applications and device used as described in “4. Headphone Antenna for FM Receive” through “8. Whip Antenna for SW Receiver”.