This older reference design contains some comprehensive designs for sub ... on any device which utilizes the same wireless base frequency. For example, you could use any of the 2.4 GHz antennas ...

The ShortLink Sub-GHz Transceiver RF IP 'SL40LP_Sub1GHzTrx_1' is a complete mixed signal RF IP for the 433, 868 and 915MHz frequency bands. It is compliant with IEEE 802.15.4-2015 and offers data ...