QUESTION

Question

I'd like to know if there is a recommended tuning strategy for selecting the components R1 and L1 connecting pins T-L and T-R respectively to ground.  Reading between the lines in the datasheet, a good starting point for R1 is a 0-ohm link, but there is no guidance for the choice of L1.

Answer 1

Hello Andrew,

Unfortunately there is no specific tuning strategy as your implementation will vary. The best way is to isolate the antenna from the other components with a pigtail coax cable, populate the 2 matching components with 0 ohm resistors, and see where your resonance is via a network analyzer. Then you can use the Smith chart to see what components you need to shift your resonance into band.

Hope that helps,

Dan Dobransky