Make sure to choose an antenna that
covers the desired frequency band, in other words, 868 MHz (European), 902-928 MHz
(North American), 779 to 78 MHz (Chinese) and 915 to 930 MHz (Japanese).
Ensure the PCB trace running from the
balun output to antenna is designed for single-ended 50Ω impedance.
Follow the footprint and other
recommendations from the antenna data sheet.
Ensure the dimension of the ground
plane in the board meets the dimension requirement specified in the antenna data
sheet. A reduced ground plane dimension reduces the efficiency achieved with the
same antenna.
Place the antenna impedance-matching
components as close to the antenna pad as possible.
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
