Hi,
We have implemented the CC8520 and CC2590 reference design and manufactured our own prototypes. Currently we have established pairing and are obtaining audio. The issue we currently experiencing is that the range is only 10 feet than muting of audio is obtained.
My best guess is that the matching network at the output antenna pin of the CC2590 is not matched to 50 ohm. I used the same values cited in the reference design, verified during manufacturing that the 50ohm RF feed trace was impedance controlled.
The only difference is that the inductors used on the reference design in the antenna section could not be obtained and I used a different manufacturer but kepted the same value.
My question is:
When designing the eval board, were S11 parameters and VSWR simulated with specific manufacturer components in mind?
Yohan