Is there any recommended chip antenna for NRF52 SoC? Any guideline on the antenna placement, designing the matching circuit etc? I assume for NRF52, no need for an external balun, since there is one integrated. Is that correct?
For debugging code on the chip, do I need to add a Segger J-Link port on my board?? Or is there any other way? Also do I need to buy an external debugger? (for eg like the TI www.ti.com/.../cc-debugger)