ISM Band Radio Modem with POF link

Dual channel full duplex ISM band RF modem with FPGA based routing engine

Dual channel full duplex ISM band RF modem with FPGA based routing engine

 

Task:

To design an ISM band modem that can communicate with a multitude of client devices, forward messages to other modems via RF or POF (Plastic OpticalFiber).

Challenge:

To achieve a universally usable design that is cost effective.

Solution:

Two ISM band radio modem chips were used in order to provide dual channel or full duplex RF capability. A small FPGA was added to implement the POF framer, serial interfaces, radio control lines and to handle the higher level protocols such as packet routing, device pairing and error detection/reporting.

Technologies used:

Altium designer, ICD Stackup- Planner for impedance control, Silabs embedded radio chips, Xilinx Spartan 6 FPGA, USB to UART bridge, Firecomms POF transceivers.