300 ~ 418 MHz Transmitter Design Notes

 
 

For either application, RFM recommends surface mount components and a careful RF PCB layout to
ensure highest output power and best harmonic suppression. Best achievable performance occurs

when the ground of the SAW device, C2 and C3, are physically close, preferably a single point on the
PCB. Transistor selection may be the BFS-17A, MMBR-901, MMBTH-10LT1, MMBTH-17LT1 or similar

NPN Silicon transistor. C1, C2 and L1 are the most critical components and will require value optimization
for each PCB layout or other design change

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