Qwe are looking for the exact antenna model number you supply with the
EVAL-ADF7021-NDBZ2 eval kit (868 MHz).
The the bill-of-materials list (BOM) of the ADF7021 Eval kits does not specify
the antenna used. We've checked it.
We have developed several devices with ADF7021-N and tested several (more than
10) SMA whip antennas for 868 MHz but not yet found an antenna with similarly
good field strength.
AThe manufacturer name is:
Item ID: SMAMFRA868