BRD4251D, EFR32FG 2.4 GHz/169 MHz Dual Band 19.5 dBm Radio Board Reference Manual

BRD4251D, EFR32 Flex Gecko Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for the EFR32 Flex Gecko Wireless System on Chips and serve as reference designs for the matching networks of the RF interfaces. The BRD4251D Radio Board supports dual-band operation with its integrated sub-GHz ISM band and 2.4 GHz band transceivers. The sub-GHz section is designed to the operate in the European ETSI 169.4-169.475 MHz band with an external whip antenna, the 2.4 GHz section is designed to operate at the 2400-2483.5 MHz band with the on-board printed antenna. The matching networks are optimized to 19.5 dBm output power